Modelling the Variability of Blazar Jets

Size: px
Start display at page:

Download "Modelling the Variability of Blazar Jets"

Transcription

1 Modelling the Variability of Blazar Jets A Selfconsistent SSC Model Matthias Weidinger Institut für Theoretische Physik und Astrophysik, Universität Würzburg GRK Tage: 24. Juli 2009 M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

2 Agenda 1 Motivation 2 Modelling a Blazar jet: Approaches 3 A Selfconsistent SSC Model 4 Results 5 Summary M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

3 Motivation 1 Motivation Paradigm Central Questions Blazars in the unified scheme of AGN 2 Modelling a Blazar jet: Approaches 3 A Selfconsistent SSC Model 4 Results 5 Summary M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

4 Paradigm M. Weidinger (Uni Wu ) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

5 Central Questions Where does the non-thermal radiation of AGN come from... From the jet, near or far away from the central Black Hole? Accretion disk or both? The obscuring torus, contribution of the Broad-line or Narrow-line region? M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

6 Central Questions Where does the non-thermal radiation of AGN come from... From the jet, near or far away from the central Black Hole? Accretion disk or both? The obscuring torus, contribution of the Broad-line or Narrow-line region? What are the mechanisms driving the radiation......definitely synchrotron radiation but what else? Comption scattering, Pair-Production, π-decay, etc.? M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

7 Central Questions Where does the non-thermal radiation of AGN come from... From the jet, near or far away from the central Black Hole? Accretion disk or both? The obscuring torus, contribution of the Broad-line or Narrow-line region? What are the mechanisms driving the radiation......definitely synchrotron radiation but what else? Comption scattering, Pair-Production, π-decay, etc.? What is the composition of the Jet... Mostly Leptons, mostly Hadrons or both equally? M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

8 Central Questions Where does the non-thermal radiation of AGN come from... From the jet, near or far away from the central Black Hole? Accretion disk or both? The obscuring torus, contribution of the Broad-line or Narrow-line region? What are the mechanisms driving the radiation......definitely synchrotron radiation but what else? Comption scattering, Pair-Production, π-decay, etc.? What is the composition of the Jet... Mostly Leptons, mostly Hadrons or both equally? What are relevant mechanisms in the jet... Radiation processes, typical magnetic fields? Particle speeds and acceleration, plasma-parameters? M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

9 Central Questions Where does the non-thermal radiation of AGN come from... From the jet, near or far away from the central Black Hole? Accretion disk or both? The obscuring torus, contribution of the Broad-line or Narrow-line region? What are the mechanisms driving the radiation......definitely synchrotron radiation but what else? Comption scattering, Pair-Production, π-decay, etc.? What is the composition of the Jet... Mostly Leptons, mostly Hadrons or both equally? What are relevant mechanisms in the jet... Radiation processes, typical magnetic fields? Particle speeds and acceleration, plasma-parameters? What are the physical processes near the black hole... Accretion next to the black hole, jet formation? Binary black hole systems? M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

10 Blazars in the unified scheme Blazar: Jet headed towards us (or small inclination) High luminosities due to relativistic beaming Good chance for insight into the jet s microphysics M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

11 Blazars in the unified scheme Blazar: Jet headed towards us (or small inclination) High luminosities due to relativistic beaming Good chance for insight into the jet s microphysics Flat spectrum radio quasars (FSRQs) Observed at high redshifts (e.g. 3C279: z = 0.536) High luminosities (at lower frequencies) M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

12 Blazars in the unified scheme Blazar: Jet headed towards us (or small inclination) High luminosities due to relativistic beaming Good chance for insight into the jet s microphysics Flat spectrum radio quasars (FSRQs) Observed at high redshifts (e.g. 3C279: z = 0.536) High luminosities (at lower frequencies) BL Lac Objects (High- and Lowpeaked) Observed at low redshifts (e.g. PKS2155: z = 0.117) Lower total luminosity M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

13 Blazars in the unified scheme Blazar: Jet headed towards us (or small inclination) High luminosities due to relativistic beaming Good chance for insight into the jet s microphysics Flat spectrum radio quasars (FSRQs) Observed at high redshifts (e.g. 3C279: z = 0.536) High luminosities (at lower frequencies) BL Lac Objects (High- and Lowpeaked) Observed at low redshifts (e.g. PKS2155: z = 0.117) Lower total luminosity Were do the differences and commonalities arise from? M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

14 Blazars in the unified scheme Commonalities of FSRQs and BL Lacs Variability on timescales from years down to minutes Extraordinary High fluxes Double Humped spectral energy distribution Hints for the same underlying physics, e.g. synchrotron emission and relativistic beaming M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

15 Blazars in the unified scheme Commonalities of FSRQs and BL Lacs Variability on timescales from years down to minutes Extraordinary High fluxes Double Humped spectral energy distribution Hints for the same underlying physics, e.g. synchrotron emission and relativistic beaming Deviations from slightly different mechanisms or orders of magnitudes in magnetc fields, accretion rate...? Blazar-sequence (redshift)? M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

16 Blazars in the unified scheme Commonalities of FSRQs and BL Lacs Variability on timescales from years down to minutes Extraordinary High fluxes Double Humped spectral energy distribution Hints for the same underlying physics, e.g. synchrotron emission and relativistic beaming Deviations from slightly different mechanisms or orders of magnitudes in magnetc fields, accretion rate...? Blazar-sequence (redshift)? Modelbuilding and comparison with observational data to rule out models and eventually gain knowledge about the physics at work and creation of a unified model. M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

17 Modelling a Jet: Approaches 1 Motivation 2 Modelling a Blazar jet: Approaches SSC Models EC Models Hadronic Models 3 A Selfconsistent SSC Model 4 Results 5 Summary M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

18 SSC Models Synchrotron Self Compton Models Spherical, homogeneous emission region (blob) Electrons/Positrons n e and photons n ph per unit volume dv M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

19 SSC Models Synchrotron Self Compton Models Spherical, homogeneous emission region (blob) Electrons/Positrons n e and photons n ph per unit volume dv Electrons suffer synchrotron losses, emitting photons in the optical to X-ray band. e B v E1 E 2 M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

20 SSC Models Synchrotron Self Compton Models Spherical, homogeneous emission region (blob) Electrons/Positrons n e and photons n ph per unit volume dv Electrons suffer synchrotron losses, emitting photons in the optical to X-ray band. e B v E1 E 2 These photones are party upscattered to VHE e due to inverse Compton scattering by the very same electrons v B E < E v v v1 1 1 E2 1 > 2 M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

21 SSC Models Synchrotron Self Compton Models Spherical, homogeneous emission region (blob) Electrons/Positrons n e and photons n ph per unit volume dv Electrons suffer synchrotron losses, emitting photons in the optical to X-ray band. e B v E1 E 2 These photones are party upscattered to VHE e due to inverse Compton scattering by the very same electrons v B E < E v v v1 1 1 E2 1 > 2 Very successfull describing the double humped SED of BL Lac objects but many free parameters (B, R, δ,...) to be constrained by observations M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

22 EC Models External Compton Models Similar to SSC Models, especially the synchrotron emission and the blob M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

23 EC Models External Compton Models Similar to SSC Models, especially the synchrotron emission and the blob But external photon field as target photons for IC scattering M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

24 EC Models External Compton Models Similar to SSC Models, especially the synchrotron emission and the blob But external photon field as target photons for IC scattering Can describe the second, higher peak in the SEDs of FSRQs But: New set of parameters (external field) has to be introduced M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

25 Proton induced cascades: Hadronic Models (HM) p + γ p + n 0 π 0 + n + π + + n π where π ± µ ± + ν µ / ν µ, π 0 γ + γ, µ ± e ± + ν e / ν e + ν µ /ν µ p + γ p + e + + e X-Ray peak due to primary electrons HE peak due to secondary particle and proton synchrotron radiation or/and pair cascading π 0 γ + γ... (Mücke02, Mannheim93) M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

26 Proton induced cascades: Hadronic Models (HM) p + γ p + n 0 π 0 + n + π + + n π where π ± µ ± + ν µ / ν µ, π 0 γ + γ, µ ± e ± + ν e / ν e + ν µ /ν µ p + γ p + e + + e X-Ray peak due to primary electrons HE peak due to secondary particle and proton synchrotron radiation or/and pair cascading π 0 γ + γ... (Mücke02, Mannheim93) Heavy Jet Models: High proton densities p + p Processes become relevant e.g. p + p p + p + n 1 (π + + π ) + n 2 π 0 or p + p p + n + π + + n 3 (π + + π ) + n 2 π 0 M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

27 Proton induced cascades: Hadronic Models (HM) p + γ p + n 0 π 0 + n + π + + n π where π ± µ ± + ν µ / ν µ, π 0 γ + γ, µ ± e ± + ν e / ν e + ν µ /ν µ p + γ p + e + + e X-Ray peak due to primary electrons HE peak due to secondary particle and proton synchrotron radiation or/and pair cascading π 0 γ + γ... (Mücke02, Mannheim93) Heavy Jet Models: High proton densities p + p Processes become relevant e.g. p + p p + p + n 1 (π + + π ) + n 2 π 0 or p + p p + n + π + + n 3 (π + + π ) + n 2 π 0 HM produce neutrinos, but require high magnetic fields in the jet M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

28 Our Selfconsistent SSC Model 1 Motivation 2 Modelling a Blazar jet: Approaches 3 A Selfconsistent SSC Model The implemented Model Acceleration in the Model Radiation in the Model 4 Results 5 Summary M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

29 The implemented Model Code On Jetsystems Of Non-thermally Emitting Sources (COJONES) Goal: Develop a fully selfconsistent, timedependent, twozone-ssc Model M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

30 The implemented Model Code On Jetsystems Of Non-thermally Emitting Sources (COJONES) Goal: Develop a fully selfconsistent, timedependent, twozone-ssc Model Explain injected particle spectra used in SSC models Acceleration will be needed M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

31 The implemented Model Code On Jetsystems Of Non-thermally Emitting Sources (COJONES) Goal: Develop a fully selfconsistent, timedependent, twozone-ssc Model Explain injected particle spectra used in SSC models n ph and n e develop out of the interaction Explain the non-intrinsic sub-hour variability of blazars Flux above 200GeV VHE Flare of PKS H.E.S.S. Lightcurve (Aharonian et al. 2007) 4e-09 Acceleration will be needed I(>200GeV) / cm -2 s -1 3e-09 2e-09 1e t / s (from MJD ) M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

32 The implemented Model Code On Jetsystems Of Non-thermally Emitting Sources (COJONES) Goal: Develop a fully selfconsistent, timedependent, twozone-ssc Model Explain injected particle spectra used in SSC models Acceleration will be needed I(>200GeV) / cm -2 s -1 4e-09 3e-09 2e-09 1e-09 n ph and n e develop out of the interaction Explain the non-intrinsic sub-hour variability of blazars Flux above 200GeV VHE Flare of PKS H.E.S.S. Lightcurve (Aharonian et al. 2007) t / s (from MJD ) One small zone for acceleration only another, bigger one for radiation Needed due to the short timescales But no additional parameters in comparision to standard SSC Models M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

33 Acceleration in the Model M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

34 Acceleration in the Model Electron density: Acceleration zone t n e = γ [ (βs γ 2 t 1 accγ) n e ] + γ [ [(a + 2)tacc ] 1 γ 2 γ n e ] +Q0 t 1 escn e M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

35 Acceleration in the Model Electron density: Acceleration zone t n e = γ [ (βs γ 2 t 1 accγ) n e ] + γ [ [(a + 2)tacc ] 1 γ 2 γ n e ] +Q0 t 1 escn e Low energetic (upstream) electrons enter the acceleration zone Q 0 = q 0 δ(γ γ 0 ) γ 0 3 M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

36 Acceleration in the Model Electron density: Acceleration zone t n e = γ [ (βs γ 2 t 1 accγ) n e ] + γ [ [(a + 2)tacc ] 1 γ 2 γ n e ] +Q0 t 1 escn e Low energetic (upstream) electrons enter the acceleration zone Accelerated due to Fermi-I acceleration M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

37 Acceleration in the Model Electron density: Acceleration zone t n e = γ [ (βs γ 2 t 1 accγ) n e ] + γ [ [(a + 2)tacc ] 1 γ 2 γ n e ] +Q0 t 1 escn e Low energetic (upstream) electrons enter the acceleration zone Accelerated due to Fermi-I acceleration Fermi-II acceleration M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

38 Acceleration in the Model Electron density: Acceleration zone t n e = γ [ (βs γ 2 t 1 accγ) n e ] + γ [ [(a + 2)tacc ] 1 γ 2 γ n e ] +Q0 t 1 escn e Low energetic (upstream) electrons enter the acceleration zone Accelerated due to Fermi-I acceleration Fermi-II acceleration while suffering synchrotron losses M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

39 Acceleration in the Model Electron density: Acceleration zone t n e = γ [ (βs γ 2 t 1 accγ) n e ] + γ [ [(a + 2)tacc ] 1 γ 2 γ n e ] +Q0 t 1 escn e Low energetic (upstream) electrons enter the acceleration zone Accelerated due to Fermi-I acceleration Fermi-II acceleration while suffering synchrotron losses resulting in the disired spectrum n e,inj / cm -3 1e+10 1e e-05 1e-10 1e-15 Injected electron spectrum (bob s rest frame) e+05 1e+06 1e+07 γ M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

40 Radiation in the Model Electron density: Radiation zone t N e = γ [ (βs γ 2 + γ IC ) N e ] + t 1 escn e t 1 esc,n N e M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

41 Radiation in the Model Electron density: Radiation zone t N e = γ [ (βs γ 2 + γ IC ) N e ] + t 1 escn e t 1 esc,n N e Electrons from the acc. zone enter the radiation zone 1e+10 Injected electron spectrum (bob s rest frame) 1e+05 n e,inj / cm e-05 1e-10 1e e+05 1e+06 1e+07 γ M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

42 Radiation in the Model Electron density: Radiation zone t N e = γ [ (βs γ 2 + γ IC ) N e ] + t 1 escn e t 1 esc,n N e Electrons from the acc. zone enter the radiation zone Radiation processes Synchrotron emission γ 2 M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

43 Radiation in the Model Electron density: Radiation zone t N e = γ [ (βs γ 2 + γ IC ) N e ] + t 1 escn e t 1 esc,n N e Electrons from the acc. zone enter the radiation zone Radiation processes Synchrotron emission γ 2 Inverse Compton scattering γ IC dν dν 1 νn ph (ν 1 )σ with the full Klein-Nishina Cross section σ(ν, ν 1, γ) M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

44 Radiation in the Model Electron density: Radiation zone t N e = γ [ (βs γ 2 + γ IC ) N e ] + t 1 escn e t 1 esc,n N e Electrons from the acc. zone enter the radiation zone Radiation processes Synchrotron emission γ 2 Inverse Compton scattering producing a photon field Photon density t n ph = R syn +R IC t 1 esc,ph n ph i.e. proportional to synchrotron and inverse Compton loesses of the electrons M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

45 Radiation in the Model Electron density: Radiation zone t N e = γ [ (βs γ 2 + γ IC ) N e ] + t 1 escn e t 1 esc,n N e Electrons from the acc. zone enter the radiation zone Radiation processes Synchrotron emission γ 2 Inverse Compton scattering producing a photon field relativistic beaming to the observer s frame SED νf(ν) / erg cm -2 s -1 1e-10 1e-11 1e-12 1e-13 1e-14 1e-15 BeppoSAX MAGIC VERITAS Zweizonen-SSC (best Fit) SED of 1ES e+15 1e+20 1e+25 ν / Hz M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

46 Some Results 1 Motivation 2 Modelling a Blazar jet: Approaches 3 A Selfconsistent SSC Model 4 Results PKS2155 in a Lowstate PKS2155 Lightcurve 5 Summary M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

47 PKS2155 in a Lowstate 1e-10 PKS in a lowstate (latest multiwavelength observation including Fermi) 1e-11 νf(ν) / erg cm -2 s -1 1e-12 1e-13 ATOM B-Band obs Fermi obs H.E.S.S. obs mid γ-injection twozone-ssc fit (low γ-injection twozone-ssc fit) 1e-14 1e+15 1e+18 1e+21 1e+24 1e+27 ν / Hz Q 0 (cm 3 ) B(G) R acc (cm) R rad (cm) t acc /t esc a δ γ M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

48 PKS2155 in a Lowstate 1e-10 PKS in a lowstate (latest multiwavelength observation including Fermi) 1e-11 νf(ν) / erg cm -2 s -1 1e-12 1e-13 1e-14 ATOM B-Band obs Fermi obs H.E.S.S. obs (H.E.S.S. data from 2003) mid γ-injection twozone-ssc fit (low γ-injection twozone-ssc fit) 1e+15 1e+18 1e+21 1e+24 1e+27 ν / Hz Q 0 (cm 3 ) B(G) R acc (cm) R rad (cm) t acc /t esc a δ γ M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

49 PKS2155 in a Lowstate 1e-10 PKS in a lowstate (latest multiwavelength observation including Fermi) 1e-11 νf(ν) / erg cm -2 s -1 1e-12 1e-13 1e-14 ATOM B-Band obs Fermi obs H.E.S.S. obs (H.E.S.S. data from 2003) mid γ-injection twozone-ssc fit (low γ-injection twozone-ssc fit) integration range (lightcurve) 1e+15 1e+18 1e+21 1e+24 1e+27 ν / Hz Q 0 (cm 3 ) B(G) R acc (cm) R rad (cm) t acc /t esc a δ γ M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

50 PKS2155 Lightcurve Inject more electrons (at γ 0 ) into the acceleration zone for certain amounts of time. M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

51 PKS2155 Lightcurve Inject more electrons (at γ 0 ) into the acceleration zone for certain amounts of time. M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

52 Summary 1 Motivation 2 Modelling a Blazar jet: Approaches 3 A Selfconsistent SSC Model 4 Results 5 Summary Conclusion Future Work M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

53 Conclusion Powerful selfconsistent SSC code with acceleration processes was developed which is able to explain the electron spectra used in SSC Models M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

54 Conclusion Powerful selfconsistent SSC code with acceleration processes was developed which is able to explain the electron spectra used in SSC Models including more complex electron spectra for the injection into the blob (with rising components) M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

55 Conclusion Powerful selfconsistent SSC code with acceleration processes was developed which is able to explain the electron spectra used in SSC Models including more complex electron spectra for the injection into the blob (with rising components) No additional parameters had to be introduced. Parameters connected directly to the jet s microphysics thus allowing physical interpretations. M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

56 Conclusion Powerful selfconsistent SSC code with acceleration processes was developed which is able to explain the electron spectra used in SSC Models including more complex electron spectra for the injection into the blob (with rising components) No additional parameters had to be introduced. Parameters connected directly to the jet s microphysics thus allowing physical interpretations. Model can explain variability down to a timesale of minutes due to non-intrinsic fluctuations along the jet axis M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

57 Much work to do... SSC Models are just one approach not able to explain both, BL Lacs and FSRQs Light travelling time within the blob not intrinsically in the model A blob (and a jet) is not a sphere... M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

58 Much work to do... SSC Models are just one approach not able to explain both, BL Lacs and FSRQs Light travelling time within the blob not intrinsically in the model A blob (and a jet) is not a sphere... Use cylindrical symmetry and solve the particle transport equation in two spacially dimensions with correct radiation transport Include hadronic processes M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

59 Much work to do... SSC Models are just one approach not able to explain both, BL Lacs and FSRQs Light travelling time within the blob not intrinsically in the model A blob (and a jet) is not a sphere... Use cylindrical symmetry and solve the particle transport equation in two spacially dimensions with correct radiation transport Include hadronic processes Spacially resolved hybrid model Produces neutrinos Light travelling time intrinsic Unifying FSRQs and BL Lacs in one model Maybe applicable on the fast rise exponential decay of Gamma Ray Bursts M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

60 Thank you for your attention. M. Weidinger (Uni Wü) A Selfconsistent SSC Model GRK Tage: 24. Juli / 22

Diagnostics of Leptonic vs. Hadronic Emission Models for Blazars Prospects for H.E.S.S.-II and CTA Markus Böttcher North-West University

Diagnostics of Leptonic vs. Hadronic Emission Models for Blazars Prospects for H.E.S.S.-II and CTA Markus Böttcher North-West University Diagnostics of Leptonic vs. Hadronic Emission Models for Blazars Prospects for H.E.S.S.-II and CTA Markus Böttcher North-West University Potchefstroom South Africa Q e (g,t) Injection, acceleration of

More information

Models for the Spectral Energy Distributions and Variability of Blazars

Models for the Spectral Energy Distributions and Variability of Blazars Models for the Spectral Energy Distributions and Variability of Blazars Markus Böttcher Ohio University, Athens, OH, USA Fermi Meets Jansky Bonn, Germany, June 21, 2010 Outline: 1) Introduction to leptonic

More information

NEUTRINOS ON ICE THE SEARCH FOR THE COSMIC-RAY SOURCES FE KRAUSS, J. WILMS, M. KADLER, M. KRETER

NEUTRINOS ON ICE THE SEARCH FOR THE COSMIC-RAY SOURCES FE KRAUSS, J. WILMS, M. KADLER, M. KRETER NEUTRINOS ON ICE THE SEARCH FOR THE COSMIC-RAY SOURCES FE KRAUSS, J. WILMS, M. KADLER, M. KRETER FELICIA.KRAUSS@UVA.NL COSMIC RAYS 2a COSMIC RAYS 1896: Henri Becquerel discovery of radioactivity 1909:

More information

Constraints on Extragalactic Background Light from Cherenkov telescopes: status and perspectives for the next 5 years

Constraints on Extragalactic Background Light from Cherenkov telescopes: status and perspectives for the next 5 years Constraints on Extragalactic Background Light from Cherenkov telescopes: status and perspectives for the next 5 years Daniel Mazin 1 and Martin Raue 2 1: IFAE, Barcelona 2: MPIK, Heidelberg This research

More information

A Theoretical Model to Explain TeV Gamma-ray and X-ray Correlation in Blazars

A Theoretical Model to Explain TeV Gamma-ray and X-ray Correlation in Blazars A Theoretical Model to Explain TeV Gamma-ray and X-ray Correlation in Blazars Nissim Fraija In collaboration with: Magda Gonzalez Instituto de Astronomia - UNAM TAUP 2015, XIV International Conference

More information

AGILE and Blazars: the Unexpected, the Unprecedented, and the Uncut

AGILE and Blazars: the Unexpected, the Unprecedented, and the Uncut AGILE and Blazars: the Unexpected, the Unprecedented, and the Uncut Rome, AGILE γ-ray Symposium 2017.12.12 Stefano Vercellone (INAF-OAB) 1 Rationale A review of the whole set of AGILE results on extra-galactic

More information

Can blazar flares be triggered by the VHE gamma-rays from the surrounding of a supermassive black hole?

Can blazar flares be triggered by the VHE gamma-rays from the surrounding of a supermassive black hole? Can blazar flares be triggered by the VHE gamma-rays from the surrounding of a supermassive black hole? Department of Astrophysics, University of Lodz, Lodz, Poland E-mail: p.banasinski@uni.lodz.pl Wlodek

More information

MWL. A Brief Advertisement Before Your Regularly Scheduled Program

MWL. A Brief Advertisement Before Your Regularly Scheduled Program MWL A Brief Advertisement Before Your Regularly Scheduled Program PKS 1441+25 PKS 1441+25 z=0.939! VHE detection over more than a single day! PKS 1441+25 37.7% polarization! PKS 1441+25 Continues optical

More information

Origin of X-rays in blazars

Origin of X-rays in blazars Origin of X-rays in blazars Greg Madejski, Stanford / KIPAC With much of the work presented here done by Amy Furniss, Masaaki Hayashida, Krzysztof Nalewajko, Marek Sikora, Jim Chiang, David Paneque, Mislav

More information

Diversity of Multi-wavelength Behavior of Relativistic Jet in 3C 279 Discovered During the Fermi Era

Diversity of Multi-wavelength Behavior of Relativistic Jet in 3C 279 Discovered During the Fermi Era Diversity of Multi-wavelength Behavior of Relativistic Jet in 3C 279 Discovered During the Fermi Era Rapid Variability of Blazar 3C 279 during Flaring States in 2013-2014 with Joint Fermi-LAT, NuSTAR,

More information

The 2006 Giant Flare in PKS and Unidentified TeV Sources. Justin Finke Naval Research Laboratory 5 June 2008

The 2006 Giant Flare in PKS and Unidentified TeV Sources. Justin Finke Naval Research Laboratory 5 June 2008 The 2006 Giant Flare in PKS 2155-304 and Unidentified TeV Sources Justin Finke Naval Research Laboratory 5 June 2008 Outline Part I: The SSC Model Part II: The giant flare in PKS 2155-304 Part III: Blazars

More information

Leptonic Jet Models of Blazars: Broadband Spectra and Spectral Variability

Leptonic Jet Models of Blazars: Broadband Spectra and Spectral Variability Leptonic Jet Models of Blazars: Broadband Spectra and Spectral Variability arxiv:astro-ph/9909179v1 Sep 1999 Markus Böttcher Space Physics and Astronomy Department Rice University, MS 8 60 S. Main Street

More information

SIMILARITY AND DIVERSITY OF BLACK HOLE SYSTEMS View from the Very High Energies

SIMILARITY AND DIVERSITY OF BLACK HOLE SYSTEMS View from the Very High Energies SIMILARITY AND DIVERSITY OF BLACK HOLE SYSTEMS View from the Very High Energies 1 Symp. 324, 12-16 September, 2016 Classical view Spinning black hole Accretion disk Collimated jets of particles 2 Looking

More information

The Secondary Universe

The Secondary Universe Secondary photons and neutrinos from distant blazars and the intergalactic magnetic fields UC Berkeley September 11, 2011 The talk will be based on A new interpretation of the gamma-ray observations of

More information

High-z Blazar SEDs Clues to Evolution in the Early Universe. Hongjun An Roger Romani on behalf of the Fermi-LAT Collaboration

High-z Blazar SEDs Clues to Evolution in the Early Universe. Hongjun An Roger Romani on behalf of the Fermi-LAT Collaboration High-z Blazar SEDs Clues to Evolution in the Early Universe Hongjun An Roger Romani on behalf of the Fermi-LAT Collaboration Outline Blazars Blazar emission and spectral energy distribution (SED) models

More information

Blazars as the Astrophysical Counterparts of the IceCube Neutrinos

Blazars as the Astrophysical Counterparts of the IceCube Neutrinos Blazars as the Astrophysical Counterparts of the IceCube Neutrinos Maria Petropoulou Department of Physics & Astronomy, Purdue University, West Lafayette, USA Einstein Fellows Symposium Harvard-Smithsonian

More information

Long term multi-wavelength variability studies of the blazar PKS

Long term multi-wavelength variability studies of the blazar PKS 52nd Rencontres de Moriond 2017 Very High Energy Phenomena in the Universe Long term multi-wavelength variability studies of the blazar PKS 2155-304 Jill Chevalier D. Sanchez, P. Serpico, J-P. Lenain,

More information

10 Years. of TeV Extragalactic Science. with VERITAS. Amy Furniss California State University East Bay

10 Years. of TeV Extragalactic Science. with VERITAS. Amy Furniss California State University East Bay 55 555 56 565 57 55 555 56 565 57 55 555 56 565 57 572 574 576 578 57 5712 5714 5716 572 574 576 578 57 5712 5714 5716 5712 5713 5714 5715 5716 5712 5713 5714 5715 5716 5712 5713 5714 5715 5716 5712 5713

More information

UNDERSTANDING POWERFUL JETS AT DIFFERENT SCALES IN THE FERMI ERA. B. THE KPC SCALE: X-RAY EMISSION MECHANISM AND JET SPEED

UNDERSTANDING POWERFUL JETS AT DIFFERENT SCALES IN THE FERMI ERA. B. THE KPC SCALE: X-RAY EMISSION MECHANISM AND JET SPEED UNDERSTANDING POWERFUL JETS AT DIFFERENT SCALES IN THE FERMI ERA. A. THE PC SCALE: LOCATING THE Γ-RAY EMISSION SITE B. THE KPC SCALE: X-RAY EMISSION MECHANISM AND JET SPEED Markos Georganopoulos 1,2 Eileen

More information

Introduction to AGN. General Characteristics History Components of AGN The AGN Zoo

Introduction to AGN. General Characteristics History Components of AGN The AGN Zoo Introduction to AGN General Characteristics History Components of AGN The AGN Zoo 1 AGN What are they? Active galactic nucleus compact object in the gravitational center of a galaxy that shows evidence

More information

Polarization Swings Reveal Magnetic Energy Dissipation in Blazars

Polarization Swings Reveal Magnetic Energy Dissipation in Blazars Polarization Swings Reveal Magnetic Energy Dissipation in Blazars Xuhui Chen Most of this work is done by : Haocheng Zhang (Ohio University & LANL, USA) Other Collaborators: Markus Boettcher (North-West

More information

Pulsar Winds in High Energy Astrophysics

Pulsar Winds in High Energy Astrophysics Pulsar Winds in High Energy Astrophysics Dmitry Khangulyan Institute of Space and Astronautical Science (ISAS/JAXA) The extreme Universe viewed in very high energy gamma-rays, Kashiwa 09/25/2012 OUTLINE

More information

Lecture 10: TeV Blazars and EBL

Lecture 10: TeV Blazars and EBL 40th Saas-Fee Course: Astrophysics at Very High Energies Lecture 10: TeV Blazars and EBL F.A. Aharonian, DIAS (Dublin) & MPIK (Heidelberg) Les Diablerets, March 15-20, 2010 Blazars - sub-class of AGN dominated

More information

Active Galactic Nuclei

Active Galactic Nuclei Active Galactic Nuclei Prof. Jeff Kenney Class 18 June 20, 2018 the first quasar discovered 3C273 (1963) very bright point source (the quasar ) jet the first quasar discovered 3C273 (1963) very bright

More information

Observations of Active Galactic Nuclei at very high energies with H.E.S.S.

Observations of Active Galactic Nuclei at very high energies with H.E.S.S. Observations of Active Galactic Nuclei at very high energies with H.E.S.S. Robert Wagner for the H.E.S.S. Collaboration http://www.mpi-hd.mpg.de/hess/ @hesstelescopes 1 H.E.S.S. High Energy Stereoscopic

More information

Misaligned AGN with Fermi-Lat:

Misaligned AGN with Fermi-Lat: Misaligned AGN with Fermi-Lat: a different perspective on relativistic jets PAOLA GRANDI INAF/IASF BOLOGNA, ITALY on behalf of the FERMI LAT Collaboration Many thanks to : Torresi E., Migliori G., P. Malaguti,

More information

g and n from TeV blazars

g and n from TeV blazars g and n from TeV blazars Matteo Cerruti CNRS, LPNHE, Paris TeVPA 2017, Columbus, OH, USA 08/11/17 1 CAVEAT Extremely biased talk! Towards TeV sources (as in title) Only focused on stationary states, no

More information

Monitoring of Blazars for variability from MIRO. Kiran S Baliyan Physical Research Laboratory, Ahmedabad, India

Monitoring of Blazars for variability from MIRO. Kiran S Baliyan Physical Research Laboratory, Ahmedabad, India Monitoring of Blazars for variability from MIRO Kiran S Baliyan Physical Research Laboratory, Ahmedabad, India Black-holes, Jets and Outflows, Kathmandu, Nepal, October 14, 2013 Enigmatic AGNs AGNs- Huge

More information

Flaring Active Galactic Nuclei: the view from Fermi-LAT

Flaring Active Galactic Nuclei: the view from Fermi-LAT Flaring Active Galactic Nuclei: the view from Fermi-LAT INAF-IASF IASF Palermo On behalf of the Fermi-LAT Collaboration and many multi-wavelength collaborators SciNeGHE 2010 1 The EGRET Era AGN dominate

More information

Studies on the VHE γ-ray/x-ray correlation in high-synchrotron peak BL Lacs

Studies on the VHE γ-ray/x-ray correlation in high-synchrotron peak BL Lacs Studies on the VHE γ-ray/x-ray correlation in high-synchrotron peak BL Lacs Magda Gonzalez Instituto de Astronomía, UNAM, México Nissim Fraija 1, Barbara Patricelli 2, José Andrés García 3 & Simone Dichiara

More information

Gamma-ray flares from 3C454 and PKS 1830 in late 2010: electron energization in the jet is not enough!

Gamma-ray flares from 3C454 and PKS 1830 in late 2010: electron energization in the jet is not enough! Gamma-ray flares from 3C454 and PKS 1830 in late 2010: electron energization in the jet is not enough! Name Affiliation A. Bulgarelli INAF-IASF Bologna A.W. Chen INAF-IASF Milano I. Donnarumma INAF-IASF

More information

Particle Acceleration and Gamma-Ray Emission from Blazars Susumu Inoue (MPIK/ICRR) - electron + proton acceleration mechanism - leptonic + hadronic

Particle Acceleration and Gamma-Ray Emission from Blazars Susumu Inoue (MPIK/ICRR) - electron + proton acceleration mechanism - leptonic + hadronic Particle Acceleration and Gamma-Ray Emission from Blazars Susumu Inoue (MPIK/ICRR) - electron + proton acceleration mechanism - leptonic + hadronic emission components blazars relativistic jet viewed near-axis

More information

Energy-dependent variability in blazars SSC simulations

Energy-dependent variability in blazars SSC simulations Energy-dependent variability in blazars SSC simulations David Sanchez Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, 91128 Palaiseau, France E-mail: dsanchez@llr.in2p3.fr Berrie Giebels

More information

GAMMA-RAYS FROM MASSIVE BINARIES

GAMMA-RAYS FROM MASSIVE BINARIES GAMMA-RAYS FROM MASSIVE BINARIES W lodek Bednarek Department of Experimental Physics, University of Lódź, Poland 1. Sources of TeV gamma-rays PSR 1259+63/SS2883 - (HESS) LS 5039 - (HESS) LSI 303 +61 o

More information

The Extragalactic Gamma-Ray View of AGILE and Fermi

The Extragalactic Gamma-Ray View of AGILE and Fermi INAF, Osservatorio Astronomico di Capodimonte 22 February 2012 The Extragalactic Gamma-Ray View of AGILE and Fermi Elena Pian INAF, Trieste Astronomical Observatory & Scuola Normale Superiore di Pisa UNIFIED

More information

Two exceptional γ-ray flares of PKS and their implications on blazar and fundamental physics

Two exceptional γ-ray flares of PKS and their implications on blazar and fundamental physics Two exceptional γ-ray flares of PKS 2155-304 and their implications on blazar and fundamental physics Rolf Bühler MPIK Heidelberg KIPAC Tea Talk SLAC 9th December 2008 H.E.S.S. Telescopes Located in Namibia

More information

High-energy emission from Gamma-Ray Bursts. Frédéric Daigne Institut d Astrophysique de Paris, Université Pierre et Marie Curie

High-energy emission from Gamma-Ray Bursts. Frédéric Daigne Institut d Astrophysique de Paris, Université Pierre et Marie Curie High-energy emission from Gamma-Ray Bursts Frédéric Daigne Institut d Astrophysique de Paris, Université Pierre et Marie Curie HEPRO III High Energy Phenomena in Relativistic Outflows Barcelona, June 27

More information

Estimation of neutrino spectra from AGNs using measured VHE γ-ray spectra

Estimation of neutrino spectra from AGNs using measured VHE γ-ray spectra Estimation of neutrino spectra from AGNs using measured VHE -ray spectra Garabed HALLADJIAN December 9 th, 2008 -cr-ν workshop, PARIS 9 December 2008 G. Halladjian 1 Presentation plan Hypotheses & Aim

More information

PERSPECTIVES of HIGH ENERGY NEUTRINO ASTRONOMY. Paolo Lipari Vulcano 27 may 2006

PERSPECTIVES of HIGH ENERGY NEUTRINO ASTRONOMY. Paolo Lipari Vulcano 27 may 2006 PERSPECTIVES of HIGH ENERGY NEUTRINO ASTRONOMY Paolo Lipari Vulcano 27 may 2006 High Energy Neutrino Astrophysics will CERTAINLY become an essential field in a New Multi-Messenger Astrophysics What is

More information

Gamma-rays from black-hole binaries (?)

Gamma-rays from black-hole binaries (?) Gamma-rays from black-hole binaries (?) Valentí Bosch-Ramon Dublin Institute for Advanced Studies Accretion and Outflow in Black Hole Systems IAU Symposium 275: Jets at all Scales Kathmandu, Nepal 13/10/2010

More information

Gamma-ray observations of blazars with the Whipple 10 m telescope

Gamma-ray observations of blazars with the Whipple 10 m telescope Gamma-ray observations of blazars with the Whipple 1 m telescope, presented on behalf of the VERITAS collaboration. E-mail: edward.collins.hughes@gmail.com This paper presents a status update of the current

More information

Active Galactic Nuclei in the MeV-GeV band (first results from Fermi)

Active Galactic Nuclei in the MeV-GeV band (first results from Fermi) Active Galactic Nuclei in the MeV-GeV band (first results from Fermi) Gino Tosti University & INFN Perugia On behalf of the Fermi-LAT Collaboration 1 Active Galactic Nuclei (AGN) EGRET showed that AGN

More information

Hard Electron Spectra and Polariza2on Proper2es of Rela2vis2c Jets

Hard Electron Spectra and Polariza2on Proper2es of Rela2vis2c Jets Hard Electron Spectra and Polariza2on Proper2es of Rela2vis2c Jets Lukasz Stawarz ISAS/JAXA (Japan) Outline Radio Galaxies (M 87) FSRQs BL Lacs Large- Scale Quasar Jets X- ray Binaries (Cyg X- 1) Broad-

More information

Magnetic Fields in Blazar Jets

Magnetic Fields in Blazar Jets Magnetic Fields in Blazar Jets Bidzina Z. Kapanadze Ilia State University, Tbilisi, Georgia MFPO 2010- Cracow, May 17-21 Blazars are defined as a AGN class with following features: featureless spectra;

More information

AGILE and multi-wavelength campaigns on blazars!

AGILE and multi-wavelength campaigns on blazars! 14 th AGILE Workshop AGILE and multi-wavelength campaigns on blazars S. Vercellone (INAF/IASF Palermo) on behalf of the AGILE AGN WG S. Vercellone INAF/IASF Palermo 14 th AGILE Workshop Rome, June 20-21

More information

Gammaray burst spectral evolution in the internal shock model: comparison with the observations

Gammaray burst spectral evolution in the internal shock model: comparison with the observations Gammaray burst spectral evolution in the internal shock model: comparison with the observations Ž. Bošnjak, F. Daigne, and G. Dubus Citation: AIP Conference Proceedings 1358, 59 (2011); doi: 10.1063/1.3621737

More information

Crab Pulsar. Chandra Image of the Crab Nebula. Crab is the most famous pulsar, which is studied in detail across the entire energy spectrum

Crab Pulsar. Chandra Image of the Crab Nebula. Crab is the most famous pulsar, which is studied in detail across the entire energy spectrum Crab Pulsar Chandra Image of the Crab Nebula Crab is the most famous pulsar, which is studied in detail across the entire energy spectrum Conventional view on the Crab Pulsar Related Emitting Zones Pulsar(Massaro+)

More information

r = A g / A opt > 2 or more, that is,

r = A g / A opt > 2 or more, that is, Name Affiliation A. Bulgarelli INAF-IASF Bologna A.W. Chen INAF-IASF Milano I. Donnarumma INAF-IASF Roma P. Giommi ASDC Roma A. Giuliani INAF-IASFMilano F. Longo INFN Trieste C. Pittori ASDC Roma L. Pacciani

More information

Active Galactic Nuclei

Active Galactic Nuclei Active Galactic Nuclei Optical spectra, distance, line width Varieties of AGN and unified scheme Variability and lifetime Black hole mass and growth Geometry: disk, BLR, NLR Reverberation mapping Jets

More information

Astrophysical Radiation Mechanisms and Polarization. Markus Böttcher North-West University Potchefstroom, South Africa

Astrophysical Radiation Mechanisms and Polarization. Markus Böttcher North-West University Potchefstroom, South Africa Astrophysical Radiation Mechanisms and Polarization Markus Böttcher North-West University Potchefstroom, South Africa Outline 1. Introduction to Radiation Transfer 2. Blackbody Spectrum Brightness Temperature

More information

Observing TeV Gamma Rays from the Jet Interaction Regions of SS 433 with HAWC

Observing TeV Gamma Rays from the Jet Interaction Regions of SS 433 with HAWC Observing TeV Gamma Rays from the Jet Interaction Regions of SS 433 with HAWC Chang Dong Rho University of Rochester TeVPA 2018 Berlin, Germany 08/28/2018 Overview 2 Microquasars as sources of TeV gamma

More information

NEUTRINOS ON ICE 3LAC COUNTERPAR TS TO ICECUBE NEUTRINOS ABOVE 100 TEV

NEUTRINOS ON ICE 3LAC COUNTERPAR TS TO ICECUBE NEUTRINOS ABOVE 100 TEV NEUTRINOS ON ICE 3LAC COUNTERPAR TS TO ICECUBE NEUTRINOS ABOVE 100 TEV FE KRAUSS FELICIA.KRAUSS@UVA.NL J. WILMS, K. MANNHEIM, K. DESOKAR, M. KADLER, M. KRETER Papers in PDF link to journal article, slides

More information

Markus Boettcher Centre for Space Research, North-West University, Potchefstroom, 2520, South Africa

Markus Boettcher Centre for Space Research, North-West University, Potchefstroom, 2520, South Africa Time-Dependence of VHE γ-ray induced Pair Cascades in AGN Environments Department of Physics and Astronomy, Rice University, Houston, TX 77005, USA Department of Physics and Astronomy, Ohio University,

More information

Gamma-ray emission from active galactic nuclei

Gamma-ray emission from active galactic nuclei Gamma-ray emission from active galactic nuclei Greg Madejski Stanford / SLAC / KIPAC with Krzysztof Nalewajko, Marek Sikora, Masaaki Hayashida, Mislav Balokovic, Amy Furniss, and the Fermi, NuSTAR teams

More information

Extreme high-energy variability of Markarian 421

Extreme high-energy variability of Markarian 421 Extreme high-energy variability of Markarian 421 Mrk 421 an extreme blazar Previous observations outstanding science issues 2001 Observations by VERITAS/Whipple 10 m 2001 Light Curve Energy spectrum is

More information

The γ-ray flares from Cygnus X-3 detected by AGILE

The γ-ray flares from Cygnus X-3 detected by AGILE The γ-ray flares from Cygnus X-3 detected by AGILE (INAF-IAPS Roma) on behalf of the AGILE Team AGILE 9th Science Workshop Astrophysics with AGILE: five years of surprise ASDC c/o ESRIN, Frascati, April

More information

Hubble Space Telescope ultraviolet spectroscopy of blazars: emission lines properties and black hole masses. E. Pian, R. Falomo, A.

Hubble Space Telescope ultraviolet spectroscopy of blazars: emission lines properties and black hole masses. E. Pian, R. Falomo, A. Hubble Space Telescope ultraviolet spectroscopy of blazars: emission lines properties and black hole masses E. Pian, R. Falomo, A. Treves 1 Outline Extra Background Introduction Sample Selection Data Analysis

More information

Probing the Pulsar Wind in the TeV Binary System

Probing the Pulsar Wind in the TeV Binary System Probing the Pulsar Wind in the TeV Binary System -PSR B1259-63/SS2883- Jumpei Takata (University of Hong Kong) Ronald Taam (TIARA, Taiwan) 1 Outline 1, Introduction -TeV binaries -Fermi observation -PSR

More information

arxiv: v1 [astro-ph.he] 6 Nov 2017

arxiv: v1 [astro-ph.he] 6 Nov 2017 arxiv:1711.02091v1 [astro-ph.he] 6 Nov 2017 Neutrinos and Ultra-High-Energy Cosmic-Ray Nuclei from Blazars Xavier Rodrigues, Anatoli Fedynitch, Shan Gao, Denise Boncioli, and Walter Winter DESY, Platanenallee

More information

Dr. Charles D. Dermer Naval Research Lab, Code 7653 Washington, DC USA

Dr. Charles D. Dermer Naval Research Lab, Code 7653 Washington, DC USA Origin and Impact of Radiation Backgrounds Chuck Dermer High-Energy Messengers: Connecting the Non-Thermal Extragalactic Backgrounds KICP Workshop, June 9-11, 2014, Chicago, IL Dr. Charles D. Dermer Naval

More information

VHE emission from radio galaxies

VHE emission from radio galaxies VHE emission from radio galaxies Martin Hardcastle The future of gamma-ray astronomy and the CTA Leicester, October 2010 Outline Recap: radio galaxy physics Inverse-Compton emission Locations of high-energy

More information

Guiding Questions. Active Galaxies. Quasars look like stars but have huge redshifts

Guiding Questions. Active Galaxies. Quasars look like stars but have huge redshifts Guiding Questions Active Galaxies 1. Why are quasars unusual? How did astronomers discover that they are extraordinarily distant and luminous? 2. What evidence showed a link between quasars and galaxies?

More information

The blazar Mrk 421: a short multifrequency review

The blazar Mrk 421: a short multifrequency review Mem. S.A.It. Vol. 83, 122 c SAIt 2012 Memorie della The blazar Mrk 421: a short multifrequency review I. Donnarumma on behalf of the AGILE Team INAF IASF Roma, Via Fosso del Cavaliere 100, I-00133 Roma,

More information

Gamma-ray emitting narrow-line Seyfert 1 galaxies and their place in the AGN zoo

Gamma-ray emitting narrow-line Seyfert 1 galaxies and their place in the AGN zoo Gamma-ray emitting narrow-line Seyfert 1 galaxies and their place in the AGN zoo Filippo D Ammando (DIFA and INAF-IRA Bologna) Monica Orienti, Justin Finke, Marcello Giroletti, Josefin Larsson on behalf

More information

A -ray View on MWL Studies of Blazars. Stefan J. Wagner LSW Heidelberg

A -ray View on MWL Studies of Blazars. Stefan J. Wagner LSW Heidelberg A -ray View on MWL Studies of Blazars Stefan J. Wagner LSW Heidelberg MWL studies of Blazars Marscher, ApJ 216, 244, 1977 MWL studies of Blazars Marscher, ApJ 216, 244, 1977 28.0 rays: Top End and Bottom

More information

PoS(SWIFT 10)142. The Swift-XRT observations of HBL Source 1ES

PoS(SWIFT 10)142. The Swift-XRT observations of HBL Source 1ES The Swift-XRT observations of HBL Source 1ES 199+ ab, Patrizia Romano b, Stefano Vercellone b, Sergo Kapanadze a, Grigol Kharshiladze c a E. Kharadze Abastumani Astrophysical Observatory, Ilia State University,

More information

OVERVIEW OF A 3C279 s FLARE and SIMULATION OF AGNs

OVERVIEW OF A 3C279 s FLARE and SIMULATION OF AGNs Gamma-ray Large Area Space Telescope OVERVIEW OF A 3C279 s FLARE and SIMULATION OF AGNs Alessandro Buzzatti Università degli Studi di Torino / SLAC Alessandro Buzzatti 1 Outline Overview of 3C279 flare

More information

Lecture 20 High-Energy Astronomy. HEA intro X-ray astrophysics a very brief run through. Swift & GRBs 6.4 kev Fe line and the Kerr metric

Lecture 20 High-Energy Astronomy. HEA intro X-ray astrophysics a very brief run through. Swift & GRBs 6.4 kev Fe line and the Kerr metric Lecture 20 High-Energy Astronomy HEA intro X-ray astrophysics a very brief run through. Swift & GRBs 6.4 kev Fe line and the Kerr metric Tut 5 remarks Generally much better. However: Beam area. T inst

More information

BH Astrophys Ch1~2.2. h"p://www.astro.princeton.edu/~burrows/classes/250/distant_galaxies.html h"p://abyss.uoregon.edu/~js/ast123/lectures/lec12.

BH Astrophys Ch1~2.2. hp://www.astro.princeton.edu/~burrows/classes/250/distant_galaxies.html hp://abyss.uoregon.edu/~js/ast123/lectures/lec12. BH Astrophys Ch1~2.2 h"p://www.astro.princeton.edu/~burrows/classes/250/distant_galaxies.html h"p://abyss.uoregon.edu/~js/ast123/lectures/lec12.html Outline Ch1. 1. Why do we think they are Black Holes?(1.1-1.2)

More information

Propagation of very high energy γ-rays inside massive binaries LS 5039 and LSI

Propagation of very high energy γ-rays inside massive binaries LS 5039 and LSI Mon. Not. R. Astron. Soc. 368, 579 591 (2006) doi:10.1111/j.1365-2966.2006.10121.x Propagation of very high energy γ-rays inside massive binaries LS 5039 and LSI +61 303 W. Bednarek Department of Experimental

More information

arxiv: v1 [astro-ph.he] 26 Sep 2017

arxiv: v1 [astro-ph.he] 26 Sep 2017 Mon. Not. R. Astron. Soc. 000,?? (0) Printed 8 September 07 (MN LATEX style file v.) Modelling blazar flaring using a time-dependent fluid jet emission model - an explanation for orphan flares and radio

More information

Multiwavelength observations of the blazar BL Lacertae: a new fast TeV gamma-ray flare

Multiwavelength observations of the blazar BL Lacertae: a new fast TeV gamma-ray flare Multiwavelength observations of the blazar BL Lacertae: a new fast TeV gamma-ray flare Qi Feng1 for the VERITAS Collaboration, S.G. JORSTAD, A.P. MARSCHER, M.L. Lister,Y.Y. Kovalev, A.B. Pushkarev, T.

More information

Non-Blazar Gamma-ray Active Galactic Nuclei seen by Fermi-LAT. C.C. Teddy Cheung Naval Research Lab/NRC on behalf of the Fermi-LAT Collaboration

Non-Blazar Gamma-ray Active Galactic Nuclei seen by Fermi-LAT. C.C. Teddy Cheung Naval Research Lab/NRC on behalf of the Fermi-LAT Collaboration Non-Blazar Gamma-ray Active Galactic Nuclei seen by Fermi-LAT C.C. Teddy Cheung Naval Research Lab/NRC on behalf of the Fermi-LAT Collaboration 1 st LAT AGN Catalog (1LAC) Summary FmJ 2010 Entire 1LAC:

More information

Numerical simulations of radiation processes in AGN.

Numerical simulations of radiation processes in AGN. Numerical simulations of radiation rocesses in AGN. Effect of chemical comosition Xavier Rodrigues DESY, Zeuthen, Germany Astroteilchenschule, Bärnfels October 14, 2016 Introduction > Question: origin

More information

Accretion Disks. 1. Accretion Efficiency. 2. Eddington Luminosity. 3. Bondi-Hoyle Accretion. 4. Temperature profile and spectrum of accretion disk

Accretion Disks. 1. Accretion Efficiency. 2. Eddington Luminosity. 3. Bondi-Hoyle Accretion. 4. Temperature profile and spectrum of accretion disk Accretion Disks Accretion Disks 1. Accretion Efficiency 2. Eddington Luminosity 3. Bondi-Hoyle Accretion 4. Temperature profile and spectrum of accretion disk 5. Spectra of AGN 5.1 Continuum 5.2 Line Emission

More information

NEAR-INFRARED PHOTOMETRY OF BLAZARS

NEAR-INFRARED PHOTOMETRY OF BLAZARS NEAR-INFRARED PHOTOMETRY OF BLAZARS C. Chapuis 1,2,S.Corbel 1, P. Durouchoux 1,T.N.Gautier 3, and W. Mahoney 3 1) Service d Astrophysique DAPNIA, CEA Saclay F-91191 Gif sur Yvette cedex 2) Département

More information

Lecture 8&9: Pulsar Wind Nebulae (Plerions) and Gamma Ray Loud Binary Systems. 40th Saas-Fee Course: Astrophysics at Very High Energies

Lecture 8&9: Pulsar Wind Nebulae (Plerions) and Gamma Ray Loud Binary Systems. 40th Saas-Fee Course: Astrophysics at Very High Energies 40th Saas-Fee Course: Astrophysics at Very High Energies Lecture 8&9: Pulsar Wind Nebulae (Plerions) and Gamma Ray Loud Binary Systems F.A. Aharonian, DIAS (Dublin) & MPIK (Heidelberg) Les Diablerets,

More information

Particle acceleration and pulsars

Particle acceleration and pulsars Meudon, nov. 2013 p. 1/17 Particle acceleration and pulsars Fabrice Mottez LUTH - Obs. Paris-Meudon - CNRS - Univ. Paris Diderot Meudon, nov. 2013 p. 2/17 Pulsars (PSR) and pulsar wind nebulae (PWNe) Mostly

More information

Pulsar Wind Nebulae as seen by Fermi-Large Area Telescope

Pulsar Wind Nebulae as seen by Fermi-Large Area Telescope Pulsar Wind Nebulae as seen by Fermi-Large Area Telescope Marie-Hélène Grondin Centre d'etudes Nucléaires de Bordeaux- Gradignan SNR/PWN Workshop Montpellier, 2010 June 1 th M.-H. Grondin, SNR/PWN Wokshop,

More information

Astr 2320 Thurs. April 27, 2017 Today s Topics. Chapter 21: Active Galaxies and Quasars

Astr 2320 Thurs. April 27, 2017 Today s Topics. Chapter 21: Active Galaxies and Quasars Astr 2320 Thurs. April 27, 2017 Today s Topics Chapter 21: Active Galaxies and Quasars Emission Mechanisms Synchrotron Radiation Starburst Galaxies Active Galactic Nuclei Seyfert Galaxies BL Lac Galaxies

More information

TeV γ-ray observations with VERITAS and the prospects of the TeV/radio connection

TeV γ-ray observations with VERITAS and the prospects of the TeV/radio connection TeV γ-ray observations with VERITAS and the prospects of the TeV/radio connection Matthias Beilicke for the VERITAS collaboration Washington University in St.Louis, Physics Department and McDonnell Center

More information

Status of the MAGIC telescopes

Status of the MAGIC telescopes SNOWPAC 2010 Status of the MAGIC telescopes Pierre Colin for the MAGIC collaboration Max-Planck-Institut für physik (Munich) Status of the MAGIC telescopes MAGIC-1 MAGIC-2 Outline: Recent results of the

More information

Variability in the synchrotron self-compton model of blazar emission

Variability in the synchrotron self-compton model of blazar emission Astron. Astrophys. 320, 19 25 (1997) ASTRONOMY AND ASTROPHYSICS Variability in the synchrotron self-compton model of blazar emission A. Mastichiadis and J.G. Kirk Max-Planck-Institut für Kernphysik, Postfach

More information

Vera Genten. AGN (Active Galactic Nuclei)

Vera Genten. AGN (Active Galactic Nuclei) Vera Genten AGN (Active Galactic Nuclei) Topics 1)General properties 2)Model 3)Different AGN-types I. Quasars II.Seyfert-galaxies III.Radio galaxies IV.young radio-loud AGN (GPS, CSS and CFS) V.Blazars

More information

Not only typical flaring blazars in the Fermi gamma-ray sky. The strange cases of SBS and PKS

Not only typical flaring blazars in the Fermi gamma-ray sky. The strange cases of SBS and PKS Not only typical flaring blazars in the Fermi gamma-ray sky. The strange cases of SBS 0846+513 and PKS 0521-36 Filippo D Ammando (University of Perugia and INFN) and M. Orienti (Univ. of Bologna and INAF-IRA)

More information

CTA / ALMA synergies. C. Boisson. Zech

CTA / ALMA synergies. C. Boisson. Zech CTA / ALMA synergies C. Boisson LUTh, Observatoire de Paris Zech thanks to H. Sol & A. Particle acceleration is a wide-spread phenomena in the Universe CTA Key Science Cosmic Rays Origin of cosmic rays

More information

Study of Blazars Across Electromagnetic Spectrum

Study of Blazars Across Electromagnetic Spectrum WDS'08 Proceedings of Contributed Papers, Part III, 213 219, 2008. ISBN 978-80-7378-067-8 MATFYZPRESS Study of Blazars Across Electromagnetic Spectrum I. Sujová Charles University, Faculty of Mathematics

More information

Status of TeV AGN Studies

Status of TeV AGN Studies Status of TeV AGN Studies Wystan Benbow Harvard-Smithsonian Center for Astrophysics AGN Physics in the CTA Era Workshop, Toulouse, France, May 16, 2011 The Extragalactic VHE Gamma-ray Sky May 1, 2011:

More information

The third Fermi LAT AGN catalogue and beyond

The third Fermi LAT AGN catalogue and beyond The third Fermi LAT AGN catalogue and beyond Filippo D Ammando (DIFA and INAF-IRA Bologna) on behalf of the Fermi LAT Collaboration dammando@ira.inaf.it 1 Different classes of AGN Quasars Radio-quiet or

More information

Gamma-Rays from Radio Galaxies: Fermi-LAT

Gamma-Rays from Radio Galaxies: Fermi-LAT Gamma-Rays from Radio Galaxies: Fermi-LAT PAOLA GRANDI INAF/IASF BOLOGNA, ITALY on behalf of the FERMI LAT Collaboration Many thanks to : C. Dermer. G. Ghisellini, L. Maraschi, G. Migliori, E. Torresi,

More information

The Broadband Emission Properties of AGN Jets

The Broadband Emission Properties of AGN Jets The Broadband Emission Properties of AGN Jets Chang, Chin-Shin 1,2,3 Max-Planck-Institut für Radioastronomie 1 Member of International Max Planck Research School of Astronomy and Astrophysics 2 Member

More information

EBL Studies with the Fermi Gamma-ray Space Telescope

EBL Studies with the Fermi Gamma-ray Space Telescope EBL Studies with the Fermi Gamma-ray Space Telescope Luis C. Reyes KICP The Extragalactic Background Light (EBL) What is it? Accumulation of all energy releases in the form of electromagnetic radiation.

More information

Fermi: Highlights of GeV Gamma-ray Astronomy

Fermi: Highlights of GeV Gamma-ray Astronomy Fermi: Highlights of GeV Gamma-ray Astronomy Dave Thompson NASA GSFC On behalf of the Fermi Gamma-ray Space Telescope Large Area Telescope Collaboration Neutrino Oscillation Workshop Otranto, Lecce, Italy

More information

Variability of Extragalactic VHE γ-ray Emitters

Variability of Extragalactic VHE γ-ray Emitters Variability of Extragalactic VHE γ-ray Emitters Wystan Benbow Harvard-Smithsonian Center for Astrophysics APS April 2011 Meeting, Anaheim, CA Very High Energy (VHE) γ-ray Astronomy VHE: ~100 GeV to ~100

More information

arxiv: v1 [astro-ph.he] 17 May 2013

arxiv: v1 [astro-ph.he] 17 May 2013 DRAFT VERSION MAY 20, 2013 Preprint typeset using LATEX style emulateapj v. 08/22/09 GAMMA-RAY BLAZARS NEAR EQUIPARTITION AND THE ORIGIN OF THE GEV SPECTRAL BREAK IN 3C 454.3 MATTEO CERRUTI 1,2, CHARLES

More information

PLASMOIDS IN RELATIVISTIC RECONNECTION: THE BLOBS OF BLAZAR EMISSION? Maria Petropoulou Purdue University

PLASMOIDS IN RELATIVISTIC RECONNECTION: THE BLOBS OF BLAZAR EMISSION? Maria Petropoulou Purdue University PLASMOIDS IN RELATIVISTIC RECONNECTION: THE BLOBS OF BLAZAR EMISSION? Maria Petropoulou Purdue University in collaboration with Dimitrios Giannios (Purdue) Lorenzo Sironi(Columbia) October 19, 2016 Einstein

More information

Active galactic nuclei (AGN)

Active galactic nuclei (AGN) Active galactic nuclei (AGN) General characteristics and types Supermassive blackholes (SMBHs) Accretion disks around SMBHs X-ray emission processes Jets and their interaction with ambient medium Radio

More information

Ryosuke Itoh. Tokyo Institute of technology.

Ryosuke Itoh. Tokyo Institute of technology. Ryosuke Itoh Tokyo Institute of technology 2017-06-13 @Ierapetra Partial travel support to the conference was provided by RadioNet. RadioNet has received funding from the European Union s Horizon 2020

More information

Gamma-ray Observations of Blazars with VERITAS and Fermi

Gamma-ray Observations of Blazars with VERITAS and Fermi Gamma-ray Observations of Blazars with VERITAS and Fermi University College Dublin E-mail: annacannon1984@gmail.com VERITAS (the Very Energetic Radiation Imaging Telescope Array System) is an array of

More information

Cosmic Ray Electrons and GC Observations with H.E.S.S.

Cosmic Ray Electrons and GC Observations with H.E.S.S. Cosmic Ray Electrons and GC Observations with H.E.S.S. Christopher van Eldik (for the H.E.S.S. Collaboration) MPI für Kernphysik, Heidelberg, Germany TeVPA '09, SLAC, July 2009 The Centre of the Milky

More information