Sep. 13, JPS meeting

Save this PDF as:
Size: px
Start display at page:

Download "Sep. 13, JPS meeting"

Transcription

1 Recent Results on Cosmic-Rays by Fermi-LAT Sep. 13, JPS meeting Tsunefumi Mizuno (Hiroshima Univ.) On behalf of the Fermi-LAT collaboration 1

2 Outline Introduction Direct measurement of CRs CRs in the Milky Way/external galaxies 2

3 Cosmic-Rays (CRs) at the Earth Discovered by Hess (1912), Nobel Prize (1936) Majority protons, 0.1-1% contribution from e - /e + N/dE (GeV cm -2 sr -1 s -1 ) protons Galactic (E<E knee) ), ExtraGalactic (E>E knee ) electrons U CR ~1 ev cm -3, comparable to positrons U B and U photon Origin and propagation of CRs is one of main topics of modern astrophysics. E 2 d antiprotons Galactic Extra Galactic E knee 3

4 Cosmic-Rays (CRs) at the Earth Discovered by Hess (1912), Nobel Prize (1936) Majority protons, 0.1-1% contribution from e - /e + N/dE (GeV cm -2 sr -1 s -1 ) protons Galactic (E<E knee) ), ExtraGalactic (E>E knee ) electrons U CR ~1 ev cm -3, comparable to positrons U B and U photon Origin and propagation of CRs is one of main topics of modern astrophysics. E 2 d antiprotons Galactic Extra Galactic E knee 4

5 CR Propagation in Milky Way CRs propagate for ~10 7 years before escaping to intergalactic space During the propagation they produce EM radiations Direct measurements show the spectrum averaged over time (~10 Myr) and space (~kpc) Indirect measurements through EM radiation provide a snapshot of CRs in distant locations. sun High energy CR electrons suffer rapid energy loss, hence may probe a few nearby sources. 5

6 CR Measurements SNR, Pulsar, etc. 6

7 CR Measurements SNR, Pulsar, etc. Fermi (2008-) 7

8 Fermi Gamma-ray Space Telescope Launched in 2008 Large Area Telescope (LAT) and Gamma-ray Burst Monitor (GBM) LAT as a GeV Gamma-ray Telescope 20 MeV - >300 GeV, 8000 cm 2 Aeff (>1GeV), ~2.4 sr FOV Sky survey to probe Galactic CRs LAT as a CRE detector Imaging calorimeter + ACD/TKR Exposure factor > 10 8 m 2 sr s Precise measurement of CRE spectrum Atwood et al., ApJ (2009) 8

9 Part I: Direct Measurement of CRs 9

10 CRE by Fermi-LAT (2009) High energy CREs may probe nearby sources An initial study used CREs collected for 6 month 4.5M above 20 GeV, >400 events in highest energy bin flat and relatively hard (~E -3 ) spectrum Pure diffusive models with proper choice of params, or models with additional e - /e + sources fit data well Fermi Data (2009) Ackermann et al., PRL (2009) 10

11 CRE by Fermi-LAT (2010) CREs collected for 12 month 8M above 7 GeV, >1000 events in highest energy bin Careful examinations of systematic uncertainty incl. cross-check with events with long path in CAL (>=13X 0 ) Noticeable deviation from single PL 20 GeV Fermi Data (2010) pre-fermi model Ackermann et al., accepted by Phys. Rev. D 11

12 CRE by Fermi-LAT (2010) Noticeable deviation from single PL Additional e - /e + sources can provide a good fit to Fermi CRE and PAMELA e + /(e - + e + ) Nature still in question. Astrophysical (pulsar), exotic (DM) or others Example of an additional component Ackermann et al., accepted by Phys. Rev. D 12

13 CRE Anisotropy Fermi offers an opportunity to search for possible CRE anisotropies (large statistics) Local CR sources, propagation environment No-anisotropy map Construct no anisotropy map from flight data shuffling and direct integration Then search for anisotropies with different energy thresholds (60 GeV min.) and on different angular scales (10 o -90 o ) Direct bin-to-bin comparison or spherical harmonic analysis Flight data sky map Significance ifi map No evidence of anisotropy above 60 GeV Ackermann et al., accepted by Phys. Rev. D 13

14 CRE Anisotropy (cont.) No evidence of anisotropies above 60 GeV and 10 o -90 o Upper limit for the dipole anisotropy: 0.5-5% 5% This limit is comparable to the value expected for a single nearby source dominating HE spectrum. will improve as more data are collected Example: Single astrophysical source + (almost) homogeneous Galactic CRE CRE spectrum at Earth Dipole Anisotropy Fermi HESS Fermi (3σ UL) Monogem Vela ea Monogem Vela Ackermann et al., accepted by Phys. Rev. D 14

15 Summary (Up to Now) Fermi-LAT can study CRs, directly (inclusive electron spectrum) and indirectly (γ-ray obs). Fermi has published precise CRE spectrum up to 1 TeV allows quantitative discussion of additional sources No evidence of anisotropies in the arrival direction above 60 GeV Upper limits are already interesting in terms of modeling 15

16 Part II: CRs in the Milky Way and external galaxies 16

17 Diffuse Gamma-Rays to Probe CRs CRs produce EM radiations during propagation LAT all-sky map ~90% of gamma-rays are diffuse emission, mostly produced via interaction of CR protons with the ISM gas GeV γ-rays are a powerful probe to study CRs incl. those in local group galaxies and nearby starburst galaxies. Planck microwave map (ISM gas) 17

18 CRs close to the Solar System 1) Intermediate lat. region: local ISM gas. Study CRs near Sun Abdo et al., ApJ 703, 1249 (2009) Abdo et al., PRL 103, (2009) 18

19 CRs close to the Solar System 1) Intermediate lat. region: local ISM gas. Study CRs near Sun 10 o <= b <=20 o Data agree with the model based on the LIS CR protons directly measured ~ local CR pool π 0 isotropic i bremss IC Abdo et al., ApJ 703, 1249 (2009) Abdo et al., PRL 103, (2009) 19

20 CR Distribution in Milky Way II quad. III quad. 2) Obs. of the outer Galaxy provides an accurate measurement of CRs beyond solar circle Abdo et al., ApJ 710, 133 (2010) Ackermann et al., ApJ submitted 20

21 The Gradient of CR Densities Emissivity = gamma-ray emission rate per H-atom gives an estimate of CR densities ( CR densi ity) Sun Preliminary II quad. III quad. Uncertainties dominated by HI optical depth (often overlooked in the past) Hint of CR density variation near Sun No significant CR gradient Abdo et al., ApJ 710, 133 (2010) Ackermann et al., ApJ submitted 21

22 The Gradient of CR Densities (cont.) CR densities beyond 11 kpc are greater than expected even if we take account of systematic uncertainty. Large CR halo Flat CR source distribution Preliminary i II quad. III quad. model from SNR distribution and a standard 4 kpc CR halo Abdo et al., ApJ 710, 133 (2010) Ackermann et al., ApJ submitted 22

23 The Large Scale Diffuse Emission The large scale diffuse analysis (Gal. plane) in progress. Already reproduces data well. Will provide CR p/e - distribution in the whole MW. π 0 Preliminary Inner Galaxy ( l <30 o, b <5 o ) Fermi Data Catalog sources IC bremss isotripic 23

24 CRs in nearby galaxies Study CR density distribution, correlation with SF activity M82 Fermi, VERITAS LMC Fermi N H =10 21 H cm -2 NGC253 Fermi, HESS 24

25 Local Group Galaxies Fermi, HESS and VERITAS reported detection of γ-rays from LMC, M82 and NGC 253. In addition, SMC Abdo et al., arxiv: First detection in gamma-rays CR density < 15% of local MW value Not a clear correlation between massive stars, neutral gas, pulsars or SNRs Hα contours Pulsars(*), SNRs(.) M31 Preliminary residuals after BG model subtraction and IRIS 100 um contours (convolved with LAT PSF) First detection in gamma-rays 25

26 Gamma-ray Luminosity vs SFR Correlation between gamma-ray luminosity and SFR over wide range in galaxy properties Details of relationship not yet understood Preliminary --- case of α=1.0 Lγ γ ~ SFR α with α=1.4 +/- 0.3 (fit with Local Group only) 26

27 Summary Fermi-LAT can study CRs directly and indirectly. Updated CRE spectrum and (non-) anisotropy provide a good constraint on additional e - /e + component. Larger CR densities in the outer Galaxy than expected Large CR halo and/or flat source distribution Detection of SMC and M31. Correlation found btw. gamma-ray luminosity and star-formation rate. Details yet to be understood. Continued gamma-ray and CRE observation provides further insight into CR production and transport. 27

28 Backup Slides 28

29 Alternative Event Selection Test possible systematic effect related to the energy resolution Events with long gp path (13 X 0 min, 16 X 0 ave.) in the instrument and contained in a single calorimeter module Energy dispersion much narrower and more symmetric, energy resolution better than 5% (1σ) up to 1 GTeV. Acceptance reduced to 5% of the standard one Ackermann et al., accepted by Phys. Rev. D 29

30 Alternative Event Selection Test possible systematic effect related to the energy resolution Two spectra are consistent within systematic errors Long path selection only optimized for energy resolution More challenging in terms of systematics (small sample) Not necessarily more accurate E res (1σ)~10% E res (1σ)<5% (up to 1TeV) Ackermann et al., accepted by Phys. Rev. D 30

31 Low-Energy Extension Rigidity cutoff depends on the detector geomagnetic position ~7 GeV is the minimum energy accessible by Fermi orbit Data are divided in 10 independent McIlwain L bins Use bin of low cutoff to reconstruct low-energy spectrum Ackermann et al., accepted by Phys. Rev. D 31

32 Low-Energy Extension Rigidity cutoff depends on the detector geomagnetic position ~7 GeV is the minimum energy accessible by Fermi orbit Data are divided in 10 independent McIlwain L bins Use bin of low cutoff to reconstruct low-energy spectrum Ackermann et al., accepted by Phys. Rev. D 32

33 Significance Skymap A pre-trial significance map produced by a bin to bin comparison Because of the large number of trials (from ~100 trials at 90 o up to ~ 5000 at 10 o ) all the observed fluctuation is insignificant 10 o integ. radius 30 o integ. radius Ackermann et al., accepted by Phys. Rev. D 60 o integ. radius 90 o integ. radius 33

34 Bin to Bin Comparison Curves: Correspondence btw. a pre- and post-trials significance Markers: highest significance for different min. energy and radius All results are post-trials insignificant 90 o 60 o 45 o 30 o 10 o Ackermann et al., accepted by Phys. Rev. D 34

35 CRs close to the Solar System Probe nearby CRs through obs. of mid-latitude region gamma-rays HI column density Agree with model from LIS CR protons directly measured ~ local CR pool Emissivity = γ-ray emission rate per H-atom gives an estimate t of CR Spectrum (Ep~10Eγ) Abdo et al., ApJ 703, 1249 (2009) Abdo et al., PRL 103, (2009) 200 o <l<260 o 22 o < b <60 o protons (π 0 -decay) electrons (bremsstrahlung) 100 MeV 1 GeV 10 GeV 35

36 The Outer Galaxy Galactic Rotation->Doppler shift of Gas lines No ambiguity: velocity->distance Local arm (Orion Spur), Perseus arm and Outer arm Gal. Center Sun II quqd. III quad. 36

37 Why Outer Galaxy? 37

38 The Gradient of CR Densities Emissivity = gamma-ray emission rate per H-atom gives an estimate of CR densities Gould belt local spur Preliminary Perseus arm local spur Interarm region II quad. III quad. Perseus arm Abdo et al., ApJ 710, 133 (2010) Ackermann et al., ApJ submitted 38

39 EM and CR Spectrum of MW Muti-frequency Spectrum of Milky Way (GALPROP model based on Fermi results) CR e - /e + energy input ~ output via sync. (1/3) and IC (2/3) dust stellar Input CRs: protons conversion efficiency up to ~80% Helium (in case of large halo) X/γ via CR intearction Strong et al., accepted by ApJL sync radio IR opt UV microwave π 0 -decay IC Brems. X-rays γ-rays Pri. e- Sec. e+ Sec. e- 39

40 Spatially Resolved LMC Gamma-ray Emissivity map Contours: N(H) column density Pulsars (+) WR start (*) SNRs ( ) Supergiant shells (circles) CR density correlated with massive start-forming regions 40

41 Spatially Resolved SMC Not a clear spatial correlation with massive stars, neutral gas, pulsars or SNRs Significant contribution from pulsars? Average CR density <15% of local MW value Hα contours Pulsars(*) ), SNRs(.) 41

The High-Energy Interstellar Medium

The High-Energy Interstellar Medium The High-Energy Interstellar Medium Andy Strong MPE Garching on behalf of Fermi-LAT collaboration Cosmic Ray Interactions: Bridging High and Low Energy Astrophysics Lorentz Centre Workshop March 14-18

More information

A New View of the High-Energy γ-ray Sky with the Fermi Telescope

A New View of the High-Energy γ-ray Sky with the Fermi Telescope A New View of the High-Energy γ-ray Sky with the Fermi Telescope Aurelien Bouvier KIPAC/SLAC, Stanford University On behalf of the Fermi collaboration SNOWPAC, 2010 The Fermi observatory Launch: June 11

More information

Interstellar gamma rays. New insights from Fermi. Andy Strong. on behalf of Fermi-LAT collaboration. COSPAR Scientific Assembly, Bremen, July 2010

Interstellar gamma rays. New insights from Fermi. Andy Strong. on behalf of Fermi-LAT collaboration. COSPAR Scientific Assembly, Bremen, July 2010 Interstellar gamma rays New insights from Fermi Andy Strong on behalf of Fermi-LAT collaboration COSPAR Scientific Assembly, Bremen, July 2010 Session E110: ' The next generation of ground-based Cerenkov

More information

Fermi measurements of diffuse gamma-ray emission: results at the first-year milestone

Fermi measurements of diffuse gamma-ray emission: results at the first-year milestone SciNeGHE 2009 Assisi, October 7th Fermi measurements of diffuse gamma-ray emission: results at the first-year milestone Luigi Tibaldo luigi.tibaldo@pd.infn.it INFN Sezione di Padova Dip. di Fisica G. Galilei,

More information

Justin Vandenbroucke (KIPAC, Stanford / SLAC) for the Fermi LAT collaboration

Justin Vandenbroucke (KIPAC, Stanford / SLAC) for the Fermi LAT collaboration Measurement of the cosmic ray positron spectrum with the Fermi LAT using the Earth s magnetic field Justin Vandenbroucke (KIPAC, Stanford / SLAC) for the Fermi LAT collaboration International Cosmic Ray

More information

Constraints on cosmic-ray origin from gamma-ray observations of supernova remnants

Constraints on cosmic-ray origin from gamma-ray observations of supernova remnants Constraints on cosmic-ray origin from gamma-ray observations of supernova remnants Marianne Lemoine-Goumard (CENBG, Université Bordeaux, CNRS-IN2P3, France) On behalf of the Fermi-LAT and HESS Collaborations

More information

Using the Fermi-LAT to Search for Indirect Signals from Dark Matter Annihilation

Using the Fermi-LAT to Search for Indirect Signals from Dark Matter Annihilation Using the Fermi-LAT to Search for Indirect Signals from Dark Matter Annihilation Tim Linden UC - Santa Cruz Representing the Fermi-LAT Collaboration with acknowledgements to: Brandon Anderson, Elliott

More information

Resolving the Extragalactic γ-ray Background

Resolving the Extragalactic γ-ray Background Resolving the Extragalactic γ-ray Background Marco Ajello Clemson University On behalf of the Fermi-LAT collab. (with a few additions by Jack) Ackermann+2015, ApJ, 799, 86 Ajello+2015, ApJL, 800,27 Ackermann+2016,

More information

Gamma-ray emission at the base of the Fermi bubbles. Dmitry Malyshev, Laura Herold Erlangen Center for Astroparticle Physics

Gamma-ray emission at the base of the Fermi bubbles. Dmitry Malyshev, Laura Herold Erlangen Center for Astroparticle Physics Gamma-ray emission at the base of the Fermi bubbles Dmitry Malyshev, Laura Herold Erlangen Center for Astroparticle Physics On behalf of the Fermi-LAT collaboration TeVPA 2018, Berlin Fermi bubbles surprise

More information

The Inner Region of the Milky Way Galaxy in High Energy Gamma Rays

The Inner Region of the Milky Way Galaxy in High Energy Gamma Rays The Inner Region of the Milky Way Galaxy in High Energy Gamma Rays Simona Murgia, SLAC-KIPAC for the Fermi LAT Collaboration Dark Matter Signatures in the Gamma-ray Sky Austin, Texas 7-8 May 2012 arxiv:0908.0195

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

Cosmic ray electrons from here and there (the Galactic scale)

Cosmic ray electrons from here and there (the Galactic scale) Cosmic ray electrons from here and there (the Galactic scale) Julien Lavalle Department of Theoretical Physics Torino University and INFN Outline: (i) local electrons (ii) comments on synchrotron [based

More information

Astro2020 Science White Paper Prospects for the detection of synchrotron halos around middle-age pulsars

Astro2020 Science White Paper Prospects for the detection of synchrotron halos around middle-age pulsars Astro2020 Science White Paper Prospects for the detection of synchrotron halos around middle-age pulsars Thematic Areas: Planetary Systems Star and Planet Formation Formation and Evolution of Compact Objects

More information

Indirect Dark Matter Searches in the Milky Way Center with the LAT on board Fermi

Indirect Dark Matter Searches in the Milky Way Center with the LAT on board Fermi Indirect Dark Matter Searches in the Milky Way Center with the LAT on board Fermi B. Cañadas, A. Morselli and V. Vitale on behalf of the Fermi LAT Collaboration Outline Gamma rays from Dark Matter Dark

More information

The Inner Region of the Milky Way Galaxy in High Energy Gamma Rays

The Inner Region of the Milky Way Galaxy in High Energy Gamma Rays The Inner Region of the Milky Way Galaxy in High Energy Gamma Rays Simona Murgia, SLAC-KIPAC for the Fermi LAT Collaboration UCLA Dark Matter 2012 Marina del Rey 22-24 February 2012 arxiv:0908.0195 Gamma

More information

Measurement of a Cosmic-ray Electron Spectrum with VERITAS

Measurement of a Cosmic-ray Electron Spectrum with VERITAS Measurement of a Cosmic-ray Electron Spectrum with VERITAS David Staszak, for the VERITAS Collaboration 1 Cosmic-Ray Electrons and Positrons at TeV Energies HESS Electrons are a unique probe of our local

More information

Gamma rays from Galactic pulsars: high- and lowlatitude

Gamma rays from Galactic pulsars: high- and lowlatitude Francesca Calore Gamma rays from Galactic pulsars: high- and lowlatitude emission Conca Specchiulla, 8th September 2014 based on: F. Calore, M. Di Mauro & F. Donato, arxiv:1406.2706 F. Calore, I. Cholis

More information

Searching for Dark Matter in the Galactic Center with Fermi LAT: Challenges

Searching for Dark Matter in the Galactic Center with Fermi LAT: Challenges Searching for Dark Matter in the Galactic Center with Fermi LAT: Challenges Simona Murgia University of California, Irvine Debates on the Nature of Dark Matter Sackler 2014 19-22 May 2014 arxiv:0908.0195

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

Measurement of CR anisotropies with the AMS detector on the ISS

Measurement of CR anisotropies with the AMS detector on the ISS Measurement of CR anisotropies with the AMS detector on the ISS J. Casaus ( CIEMAT Spain ) on behalf of the AMS Collaboration Origin of excess of positrons Positron fraction shows an excess above 10 GeV

More information

The Galactic diffuse gamma ray emission in the energy range 30 TeV 3 PeV

The Galactic diffuse gamma ray emission in the energy range 30 TeV 3 PeV The Galactic diffuse gamma ray emission in the energy range 30 TeV 3 PeV Mount Rainier by Will Christiansen Silvia Vernetto & Paolo Lipari 35th ICRC 12-20 July 2017 - Busan - South Korea Gamma ray astronomy

More information

High-Energy GammaRays toward the. Galactic Centre. Troy A. Porter Stanford University

High-Energy GammaRays toward the. Galactic Centre. Troy A. Porter Stanford University High-Energy GammaRays toward the Galactic Centre Troy A. Porter Stanford University Fermi LAT 5-Year Sky Map > 1 GeV Galactic Plane Galactic Centre Point Sources Diffuse γ-ray emission produced by cosmic

More information

Mattia Di Mauro. Fermi-LAT point source population studies and origin of the Fermi-LAT gamma-ray background. Trieste, May, 3, 2016

Mattia Di Mauro. Fermi-LAT point source population studies and origin of the Fermi-LAT gamma-ray background. Trieste, May, 3, 2016 Fermi-LAT point source population studies and origin of the Fermi-LAT gamma-ray background Mattia Di Mauro On behalf of the Fermi- LAT Collaboration 1 Trieste, May, 3, 2016 THE ISOTROPIC GAMMA RAY BACKGROUND

More information

Constraining Dark Matter annihilation with the Fermi-LAT isotropic gamma-ray background

Constraining Dark Matter annihilation with the Fermi-LAT isotropic gamma-ray background Constraining Dark Matter annihilation with the Fermi-LAT isotropic gamma-ray background Fiorenza Donato @ Physics Dept., Un. Torino The gamma-ray sky - Minneapolis, October 10, 2013 Plan of my talk What

More information

Troy A. Porter Stanford University

Troy A. Porter Stanford University High-Energy Gamma-Rays from the Milky Way: 3D Spatial Models for the CR and Radiation Field Densities Troy A. Porter Stanford University What is GALPROP? Tool for modelling and interpreting cosmic-ray

More information

Cosmic Ray panorama. Pamela.roma2.infn.it PAMELA (2012) Experimental challenges : e + /p ~ 10-3 e + /e - ~ 10-1

Cosmic Ray panorama.  Pamela.roma2.infn.it PAMELA (2012) Experimental challenges : e + /p ~ 10-3 e + /e - ~ 10-1 1912 1932 Cosmic Ray panorama http::// Pamela.roma2.infn.it PAMELA (2012) Experimental challenges : e + /p ~ 10-3 e + /e - ~ 10-1 Pamela : < 0.1 evt year/gev Flux E α α 2.7 / 3.3 Statistical precision

More information

Implication of AMS-02 positron fraction measurement. Qiang Yuan

Implication of AMS-02 positron fraction measurement. Qiang Yuan Implication of AMS-02 positron fraction measurement Qiang Yuan (yuanq@ihep.ac.cn) Institute of High Energy Physics, Chinese Academy of Sciences Collaborated with Xiaojun Bi, Guo-Ming Chen, Yi-Qing Guo,

More information

Cross-Correlation of Cosmic Shear and Extragalactic Gamma-ray Background

Cross-Correlation of Cosmic Shear and Extragalactic Gamma-ray Background Cross-Correlation of Cosmic Shear and Extragalactic Gamma-ray Background Masato Shirasaki (Univ. of Tokyo) with Shunsaku Horiuchi (UCI), Naoki Yoshida (Univ. of Tokyo, IPMU) Extragalactic Gamma-Ray Background

More information

Indirect searches for dark matter with the Fermi LAT instrument

Indirect searches for dark matter with the Fermi LAT instrument Indirect searches for dark matter with the Fermi LAT instrument M. Nicola Mazziotta INFN-Bari mazziotta@ba.infn.it 2nd international workshop on HERD Beijing Dec 2-3, 2013 Indirect Dark Matter Search +

More information

Gamma-ray emission from cosmic rays and interstellar medium interactions in star-forming galaxies

Gamma-ray emission from cosmic rays and interstellar medium interactions in star-forming galaxies Mem. S.A.It. Vol. 82, 888 c SAIt 2011 Memorie della Gamma-ray emission from cosmic rays and interstellar medium interactions in star-forming galaxies P. Martin 1 and K. Bechtol 2 on behalf of the Fermi/LAT

More information

Cosmic rays in the local interstellar medium

Cosmic rays in the local interstellar medium Cosmic rays in the local interstellar medium Igor V. Moskalenko Igor V. Moskalenko/NASA-GSFC 1 LMC (Magellanic Cloud Emission Nuclear Data-2004/09/28, Line Survey: Smith, Points) Santa Fe R - H G - [S

More information

Preliminary results from gamma-ray observations with the CALorimeteric Electron Telescope (CALET)

Preliminary results from gamma-ray observations with the CALorimeteric Electron Telescope (CALET) Preliminary results from gamma-ray observations with the CALorimeteric Electron Telescope (CALET) Y.Asaoka for the CALET Collaboration RISE, Waseda University 2016/12/15 CTA-Japan Workshop The extreme

More information

A New Look at the Galactic Diffuse GeV Excess

A New Look at the Galactic Diffuse GeV Excess A New Look at the Galactic Diffuse GeV Excess Brian Baughman Santa Cruz Institute for Particle Physics 1 Overview Diffuse gamma-ray emission The Galactic diffuse gamma-ray GeV excess Discussion of the

More information

Galactic diffuse gamma-rays

Galactic diffuse gamma-rays Galactic diffuse gamma-rays Masaki Mori Department of Physics, College of Science & Engineering, Ritsumeikan University 1 July 31, 2009, Dept. Astronomy, Kyoto University GeV gamma-ray sky by EGRET Compton

More information

Galactic Sources with Milagro and HAWC. Jordan Goodman for the HAWC and Milagro Collaborations

Galactic Sources with Milagro and HAWC. Jordan Goodman for the HAWC and Milagro Collaborations Galactic Sources with Milagro and HAWC Jordan Goodman for the HAWC and Milagro Collaborations Snowpack 2010 Milagro and HAWC Milagro was a first generation wide-field gamma-ray telescope: Proposed in 1990

More information

Galactic Diffuse Gamma-Ray Emission

Galactic Diffuse Gamma-Ray Emission Galactic Diffuse Gamma-Ray Emission The Bright Gamma-Ray Sky 7 th AGILE Workshop 29 Sep - 1 Oct, 2009 Stanley D. Hunter NASA/GSFC stanley.d.hunter@nasa.gov Galactic Diffuse Emission The beginning: OSO

More information

The Large Area Telescope on-board of the Fermi Gamma-Ray Space Telescope Mission

The Large Area Telescope on-board of the Fermi Gamma-Ray Space Telescope Mission The Large Area Telescope on-board of the Fermi Gamma-Ray Space Telescope Mission 1 Outline Mainly from 2009 ApJ 697 1071 The Pair Conversion Telescope The Large Area Telescope Charged Background and Events

More information

Constraining Galactic dark matter in the Fermi-LAT sky with photon counts statistics

Constraining Galactic dark matter in the Fermi-LAT sky with photon counts statistics Constraining Galactic dark matter in the Fermi-LAT sky with photon counts statistics Moriond Cosmology 2018 Silvia Manconi (University of Turin & INFN) March 20, 2018 In collaboration with: Hannes Zechlin,

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

Highlights from the Fermi Symposium

Highlights from the Fermi Symposium Highlights from the Fermi Symposium Aldo Morselli INFN Roma Tor Vergata 1 The LAT at 2 Years and 17 days from the 3 rd!!! 11 June 2008 2 Fermi is Making a Major Impact Science, December 2009 Breakthrough

More information

Hunting for Dark Matter in Anisotropies of Gamma-ray Sky: Theory and First Observational Results from Fermi-LAT

Hunting for Dark Matter in Anisotropies of Gamma-ray Sky: Theory and First Observational Results from Fermi-LAT Hunting for Dark Matter in Anisotropies of Gamma-ray Sky: Theory and First Observational Results from Fermi-LAT Eiichiro Komatsu (Texas Cosmology Center, Univ. of Texas at Austin) MPA Seminar, September

More information

What Can GLAST Say About the Origin of Cosmic Rays in Other Galaxies

What Can GLAST Say About the Origin of Cosmic Rays in Other Galaxies SLAC-PUB-8660 October 2000 astro-ph/0003407 What Can GLAST Say About the Origin of Cosmic Rays in Other Galaxies Seth Digelaxb, Igor V. Moskalenko xc, and Jonathan F. Ormes, P. Sreekumard. and P. Roger

More information

Sources of GeV Photons and the Fermi Results

Sources of GeV Photons and the Fermi Results Sources of GeV Photons and the Fermi Results 1. GeV instrumentation and the GeV sky with the Fermi Gamma-ray Space Telescope 2. First Fermi Catalog of Gamma Ray Sources and the Fermi Pulsar Catalog 3.

More information

Properties of Elementary Particle Fluxes in Cosmic Rays. TeVPA Aug. 7, Yuan-Hann Chang National Central University, Taiwan

Properties of Elementary Particle Fluxes in Cosmic Rays. TeVPA Aug. 7, Yuan-Hann Chang National Central University, Taiwan Properties of Elementary Particle Fluxes in Cosmic Rays TeVPA Aug. 7, 2017 Yuan-Hann Chang National Central University, Taiwan Elementary Particles in Space There are hundreds of different kinds of charged

More information

T. J. Brandt. CRISM: 27 Jun On behalf of the Fermi- LAT Collabora:on IRAP/Université Paul Saba:er.

T. J. Brandt. CRISM: 27 Jun On behalf of the Fermi- LAT Collabora:on IRAP/Université Paul Saba:er. On behalf of the Fermi- LAT Collabora:on IRAP/Université Paul Saba:er brandt@cesr.fr CRISM: 27 Jun 2011 All- par:cle CR Spectrum Cosmic rays are: charged particles from outer space (V. Hess, 1912) { ~90%

More information

Diffuse Gamma-Ray Emission

Diffuse Gamma-Ray Emission Diffuse Gamma-Ray Emission Debbijoy Bhattacharya Manipal Centre for Natural Sciences (MCNS) Manipal University 5 Sept 2014 Observational Gamma-Ray Astronomy Atmospheric Window 00 11 00 11 Figure: Atmospheric

More information

Gamma-ray Astrophysics

Gamma-ray Astrophysics Gamma-ray Astrophysics AGN Pulsar SNR GRB Radio Galaxy The very high energy -ray sky NEPPSR 25 Aug. 2004 Many thanks to Rene Ong at UCLA Guy Blaylock U. of Massachusetts Why gamma rays? Extragalactic Background

More information

Gamma-ray and neutrino diffuse emissions of the Galaxy above the TeV

Gamma-ray and neutrino diffuse emissions of the Galaxy above the TeV Gamma-ray and neutrino diffuse emissions of the Galaxy above the TeV (with spatial dependent CR transport) D. Grasso (INFN, Pisa) with D. Gaggero, A. Marinelli, A. Urbano, M. Valli IceCube recent results

More information

Update on the Two Smoking Gun" Fermi LAT Searches for Dark Matter- Milky Way Dwarfs and Lines

Update on the Two Smoking Gun Fermi LAT Searches for Dark Matter- Milky Way Dwarfs and Lines Update on the Two Smoking Gun" Fermi LAT Searches for Dark Matter- Milky Way Dwarfs and Lines Elliott Bloom KIPAC-SLAC, Stanford University On Behalf of the Fermi-LAT Collaboration What We are Learning

More information

Diffuse Gamma ray emission. P. Sreekumar ISRO Satellite Centre Bangalore

Diffuse Gamma ray emission. P. Sreekumar ISRO Satellite Centre Bangalore Diffuse Gamma ray emission P. Sreekumar ISRO Satellite Centre Bangalore The Gamma Ray Universe - as seen by EGRE 3C 279 Vela Pulsar Geminga Crab Galactic Center Galactic plane The gamma-ray sky - FERMI

More information

1939 Baade&Zwicky 1949 Fermi 1977 (Krymski; Axford; Bell; Blandford & Ostriker

1939 Baade&Zwicky 1949 Fermi 1977 (Krymski; Axford; Bell; Blandford & Ostriker 46 1939 Baade&Zwicky 1949 Fermi 1977 (Krymski; Axford; Bell; Blandford & Ostriker From Aharonian et al. 2011 From Letessier-Sevon & Stanev 2011 Fermi 2-year sky map Outline 1. 2. 3. 4. knee ankle (b)

More information

The Sun and the Solar System in Gamma Rays

The Sun and the Solar System in Gamma Rays The Sun and the Solar System in Gamma Rays R. Desiante1 on behalf of the Fermi-LAT collaboration SciNeGHE 2016 1 INFN Torino Outline Introduction The Fermi Gamma-Ray Space Telescope The active Sun as seen

More information

Spectra of Cosmic Rays

Spectra of Cosmic Rays Spectra of Cosmic Rays Flux of relativistic charged particles [nearly exactly isotropic] Particle density Power-Law Energy spectra Exponent (p, Nuclei) : Why power laws? (constraint on the dynamics of

More information

Exploring the Ends of the Rainbow: Cosmic Rays in Star-Forming Galaxies

Exploring the Ends of the Rainbow: Cosmic Rays in Star-Forming Galaxies Exploring the Ends of the Rainbow: Cosmic Rays in Star-Forming Galaxies Brian Lacki With Todd Thompson, Eliot Quataert, Eli Waxman, Abraham Loeb 21 September 2010 The Cosmic SED Nonthermal Thermal Nonthermal

More information

observation of Galactic sources

observation of Galactic sources AGILE observation of Galactic sources Andrea Giuliani Istituto Astrofisica Spaziale e Fisica Cosmica, Milano ( INAF ) on behalf of the AGILE Team Summary of the Presentation The AGILE Mission The diffuse

More information

Signal Model vs. Observed γ-ray Sky

Signal Model vs. Observed γ-ray Sky Signal Model vs. Observed γ-ray Sky Springel+, Nature (2008) Two main dark matter signal components: 1. galactocentric diffuse 2. small structures Observed sky modeled with bremsstrahlung π 0 decay up-scattered

More information

The Fermi Large Area Telescope

The Fermi Large Area Telescope The Fermi Large Area Telescope Towards the (first) years in orbit Luca Baldini Università di Pisa and INFN Sezione di Pisa luca.baldini@pi.infn.it Pisa, September 5, 014 Prelude: the Fermi Observatory

More information

Andrea Albert (The Ohio State University) on behalf of The Fermi LAT Collaboration. HEP Seminar University of Virginia 12/05/12

Andrea Albert (The Ohio State University) on behalf of The Fermi LAT Collaboration. HEP Seminar University of Virginia 12/05/12 Indirect Searches for Dark Matter with the Fermi Large Area Telescope Andrea Albert (The Ohio State University) on behalf of The Fermi LAT Collaboration HEP Seminar University of Virginia 12/05/12 Outline

More information

First results on the high energy cosmic ray electron spectrum with the Fermi-LAT

First results on the high energy cosmic ray electron spectrum with the Fermi-LAT First results on the high energy cosmic ray electron spectrum with the Fermi-LAT Johan Bregeon INFN Pisa johan.bregeon@pi.infn.it on behalf of the Fermi LAT collaboration TANGO in Paris - May 4 th, 009

More information

High and low energy puzzles in the AMS-02 positron fraction results

High and low energy puzzles in the AMS-02 positron fraction results High and low energy puzzles in the AMS-02 positron fraction results Dario Grasso (INFN, Pisa) D. Gaggero (SISSA), L.Maccione (MPI, Munich), C. Evoli(DESY), G. Di Bernardo (Göteborg) AMS-02 positron fraction

More information

ON PROBABLE CONTRIBUTION OF NEARBY SOURCES TO ANISOTROPY AND SPECTRUM OF COSMIC RAYS AT TEV-PEV-ENERGIES

ON PROBABLE CONTRIBUTION OF NEARBY SOURCES TO ANISOTROPY AND SPECTRUM OF COSMIC RAYS AT TEV-PEV-ENERGIES ON PROBABLE CONTRIBUTION OF NEARBY SOURCES TO ANISOTROPY AND SPECTRUM OF COSMIC RAYS AT TEV-PEV-ENERGIES SVESHNIKOVA L.G. 1, STRELNIKOVA O.N. 1, PTUSKIN V.S. 3 1 Lomonosov Moscow State University, SINP,

More information

Nikolay Topchiev for the GAMMA-400 Collaboration High-energy gamma-ray studying with GAMMA-400

Nikolay Topchiev for the GAMMA-400 Collaboration High-energy gamma-ray studying with GAMMA-400 Nikolay Topchiev for the GAMMA-400 Collaboration High-energy gamma-ray studying with GAMMA-400 July 12-20, 2017, ICRC2017, Busan, Korea High-energy gamma-ray studying Distribution of 3033 discrete sources

More information

Recent Observations of Supernova Remnants

Recent Observations of Supernova Remnants 1 Recent Observations of Supernova Remnants with VERITAS Tülün Ergin (U. of Massachusetts Amherst, MA) on behalf of the VERITAS Collaboration (http://veritas.sao.arizona.edu) 2 Contents Supernova Remnants

More information

Testing a DM explanation of the positron excess with the Inverse Compton scattering

Testing a DM explanation of the positron excess with the Inverse Compton scattering Testing a DM explanation of the positron excess with the Inverse Compton scattering Gabrijela Zaharijaš Oskar Klein Center, Stockholm University Work with A. Sellerholm, L. Bergstrom, J. Edsjo on behalf

More information

The Fermi Gamma-ray Space Telescope

The Fermi Gamma-ray Space Telescope Abstract The Fermi Gamma-ray Space Telescope Tova Yoast-Hull May 2011 The primary instrument on the Fermi Gamma-ray Space Telescope is the Large Area Telescope (LAT) which detects gamma-rays in the energy

More information

The γ-ray sky after two years of the Fermi satellite Jean Ballet (AIM, CEA/DSM/IRFU/SAp) on behalf of the Fermi LAT Collaboration

The γ-ray sky after two years of the Fermi satellite Jean Ballet (AIM, CEA/DSM/IRFU/SAp) on behalf of the Fermi LAT Collaboration The γ-ray sky after two years of the Fermi satellite Jean Ballet (AIM, CEA/DSM/IRFU/SAp) on behalf of the Fermi LAT Collaboration Marseille, April 4, 2011 The Fermi Observatory Large Area Telescope (LAT):

More information

Particle Acceleration in the Universe

Particle Acceleration in the Universe Particle Acceleration in the Universe Hiroyasu Tajima Stanford Linear Accelerator Center Kavli Institute for Particle Astrophysics and Cosmology on behalf of SLAC GLAST team June 7, 2006 SLAC DOE HEP Program

More information

Topics. 1. Towards a unified picture of CRs production and propagation: 2. AMS-02 good candidates for Dark Matter space search

Topics. 1. Towards a unified picture of CRs production and propagation: 2. AMS-02 good candidates for Dark Matter space search Nicolò Masi Bologna University and INFN - 31 May 2016 Topics 1. Towards a unified picture of CRs production and propagation: Astrophysical uncertainties with GALPROP Local Interstellar Spectra: AMS-02

More information

Remnants and Pulsar Wind

Remnants and Pulsar Wind High Energy Supernova Remnants and Pulsar Wind Nebulae F. Giordano Dipartimento Interateneo di Fisica and INFN Sez. Bari For the Fermi-LAT Collaboration Scineghe 2010 The Afterlife of a star IC443 Crab

More information

Anisotropy studies with the Pierre Auger Observatory

Anisotropy studies with the Pierre Auger Observatory Anisotropy studies with the Pierre Auger Observatory Carla Macolino 1 for the Pierre Auger Collaboration 2 Full author list: http://www.auger.org/archive/authors_2011_05.html 1 Lab. de Physique Nucleaire

More information

Gamma-ray observations of millisecond pulsars with the Fermi LAT. Lucas Guillemot, MPIfR Bonn. NS2012 in Bonn 27/02/12.

Gamma-ray observations of millisecond pulsars with the Fermi LAT. Lucas Guillemot, MPIfR Bonn. NS2012 in Bonn 27/02/12. Gamma-ray observations of millisecond pulsars with the Fermi LAT Lucas Guillemot, MPIfR Bonn guillemo@mpifr-bonn.mpg.de NS2012 in Bonn 27/02/12 The Fermi Gamma-ray Space Telescope Fermi = Large Area Telescope

More information

Bright gamma-ray sources observed by DArk Matter Particle Explorer

Bright gamma-ray sources observed by DArk Matter Particle Explorer Bright gamma-ray sources observed by DArk Matter Particle Explorer a, Kai-Kai Duan ab, Zhao-Qiang Shen ab, Zun-Lei Xu a, and Simone Garrappa c on behalf of the DAMPE collaboration a Key Laboratory of Dark

More information

Observations of Gamma ray Spiders with the Fermi Large Area Telescope

Observations of Gamma ray Spiders with the Fermi Large Area Telescope Observations of Gamma ray Spiders with the Fermi Large Area Telescope Tyrel J. Johnson1 with P. S. Ray2, F. Camilo3, J. Roy4,5, and M. S. E. Roberts6 on behalf of the Fermi LAT collaboration 1. George

More information

A. Chen (INAF-IASF Milano) On behalf of the Fermi collaboration

A. Chen (INAF-IASF Milano) On behalf of the Fermi collaboration A. Chen (INAF-IASF Milano) On behalf of the Fermi collaboration Astro-Siesta, May 13 th 2010 Why is it important? Contains information about the evolution of matter in the universe: star formation history,

More information

Radio Observations of TeV and GeV emitting Supernova Remnants

Radio Observations of TeV and GeV emitting Supernova Remnants Radio Observations of TeV and GeV emitting Supernova Remnants Denis Leahy University of Calgary, Calgary, Alberta, Canada (collaborator Wenwu Tian, National Astronomical Observatories of China) outline

More information

a cosmic- ray propagation and gamma-ray code

a cosmic- ray propagation and gamma-ray code GALPROP: a cosmic- ray propagation and gamma-ray code A. Strong, MPE Garching Tools for SUSY, Annecy, June 28 2006 The basis: cosmic-ray production & propagation in the Galaxy intergalactic space HALO

More information

Latest Results on Dark Matter and New Physics Searches with Fermi. Simona Murgia, SLAC-KIPAC on behalf of the Fermi-LAT Collaboration

Latest Results on Dark Matter and New Physics Searches with Fermi. Simona Murgia, SLAC-KIPAC on behalf of the Fermi-LAT Collaboration Latest Results on Dark Matter and New Physics Searches with Fermi Simona Murgia, SLAC-KIPAC on behalf of the Fermi-LAT Collaboration TeV Particle Astrophysics 2009 SLAC, July 13-16 2009 DM and New Physics

More information

Radio, γ-ray, and Neutrino Emission from Star- Forming Galaxies

Radio, γ-ray, and Neutrino Emission from Star- Forming Galaxies Radio, γ-ray, and Neutrino Emission from Star- Forming Galaxies M82 core Marvil JVLA 6GHz Todd Thompson The Ohio State University Department of Astronomy Center for Cosmology and Astro-Particle Physics

More information

Astrophysical issues in the cosmic ray e spectra: Have we seen dark matter annihilation?

Astrophysical issues in the cosmic ray e spectra: Have we seen dark matter annihilation? Astrophysical issues +/ in the cosmic ray e spectra: Have we seen dark matter annihilation? Julien Lavalle Department of Theoretical Physics University of Torino and INFN Collab: Torino: R. Lineros, F.

More information

Fermi-LAT and WMAP observations of the SNR Puppis A

Fermi-LAT and WMAP observations of the SNR Puppis A Fermi-LAT and WMAP observations of the SNR Puppis A Marie-Hélène Grondin & Marianne Lemoine-Goumard Hewitt, J., Grondin, MH, et al. 2012, ApJ, accepted (arxiv:1210.4474) MODE-SNR-PWN workshop - November

More information

arxiv: v2 [astro-ph.he] 26 Mar 2010

arxiv: v2 [astro-ph.he] 26 Mar 2010 9 Fermi Symposium, Washington, D.C., Nov. -5 The LAT Low-Energy technique for Fermi Gamma-Ray Bursts spectral analysis. V. Pelassa, F. Piron LPTA, CNRS/INP3 - Université Montpellier arxiv:.67v [astro-ph.he]

More information

Gamma ray and antiparticles (e + and p) as tools to study the propagation of cosmic rays in the Galaxy

Gamma ray and antiparticles (e + and p) as tools to study the propagation of cosmic rays in the Galaxy Gamma ray and antiparticles (e + and p) as tools to study the propagation of cosmic rays in the Galaxy INFN Sez. La Sapienza, Rome, Italy E-mail: paolo.lipari@roma1.infn.it The spectra of cosmic rays observed

More information

Gas 1: Molecular clouds

Gas 1: Molecular clouds Gas 1: Molecular clouds > 4000 known with masses ~ 10 3 to 10 5 M T ~ 10 to 25 K (cold!); number density n > 10 9 gas particles m 3 Emission bands in IR, mm, radio regions from molecules comprising H,

More information

A. Takada (Kyoto Univ.)

A. Takada (Kyoto Univ.) A. Takada (Kyoto Univ.) Nucleosynthesis SNR : Radio-isotopes Galactic plane : 26 Al Annihilation Particle acceleration Jet (AGN) : Synchrotron + Inverse Compton Strong gravitational potential Black hole

More information

Primary Cosmic Rays : what are we learning from AMS

Primary Cosmic Rays : what are we learning from AMS Primary Cosmic Rays : what are we learning from AMS Roberto Battiston University and INFN-TIFPA of Trento HERD Workshop IHEP-Beijing December 2-3 2013 1 Agile Fermi PAMELA AMS Direct study of the HESS

More information

P. Tinyakov 1 TELESCOPE ARRAY: LATEST RESULTS. P. Tinyakov. for the Telescope Array Collaboration. Telescope Array detector. Spectrum.

P. Tinyakov 1 TELESCOPE ARRAY: LATEST RESULTS. P. Tinyakov. for the Telescope Array Collaboration. Telescope Array detector. Spectrum. 1 1 Université Libre de Bruxelles, Bruxelles, Belgium Telescope Outline Telescope Global distributions Hot spot Correlation with LSS Other searches Telescope UHECR experiments Telescope ARRAY COLLABORATION

More information

Supernova Remnants as Cosmic Ray Accelerants. By Jamie Overbeek Advised by Prof. J. Finley

Supernova Remnants as Cosmic Ray Accelerants. By Jamie Overbeek Advised by Prof. J. Finley Supernova Remnants as Cosmic Ray Accelerants By Jamie Overbeek Advised by Prof. J. Finley Cosmic Rays Discovered by Victor Hess in 1911 during a balloon flight through Austria He used an electroscope to

More information

1. GAMMA-RAY BURSTS & 2. FAST RADIO BURSTS

1. GAMMA-RAY BURSTS & 2. FAST RADIO BURSTS 1. GAMMA-RAY BURSTS & 2. FAST RADIO BURSTS WITH TAM, Pak Hin (Sun Yat-sen University/ICRR) GAMMA-RAY BURST OBSERVATIONS WITH CTA LESSONS LEARNT FROM FERMI/LAT TAM, Pak Hin (Sun Yat-sen University/ICRR,

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

Astroparticle Physics with IceCube

Astroparticle Physics with IceCube Astroparticle Physics with IceCube Nick van Eijndhoven nickve.nl@gmail.com http://w3.iihe.ac.be f or the IceCube collaboration Vrije Universiteit Brussel - IIHE(ULB-VUB) Pleinlaan 2, B-1050 Brussel, Belgium

More information

Dark Matter Searches with AMS-02. AMS: Alpha Magnetic Spectrometer

Dark Matter Searches with AMS-02. AMS: Alpha Magnetic Spectrometer Dark Matter Searches with AMS-02 AMS: Alpha Magnetic Spectrometer 2007/2008 Wim de Boer on behalf of the AMS collaboration University of Karlsruhe July, 20. 2004 COSPAR, Paris, W. de Boer, Univ. Karlsruhe

More information

Constraining dark matter signal from a combined analysis of Milky Way satellites using the Fermi-LAT arxiv: v1 [astro-ph.

Constraining dark matter signal from a combined analysis of Milky Way satellites using the Fermi-LAT arxiv: v1 [astro-ph. Constraining dark matter signal from a combined analysis of Milky Way satellites using the Fermi-LAT arxiv:1102.5701v1 [astro-ph.he] 28 Feb 2011 Stockholm University E-mail: maja.garde@fysik.su.se On behalf

More information

The γ-ray Milky Way above 10 GeV: Distinguishing Sources from Diffuse Emission

The γ-ray Milky Way above 10 GeV: Distinguishing Sources from Diffuse Emission The γ-ray Milky Way above 10 GeV: Distinguishing Sources from Diffuse Emission, a C. Deil, a A. Donath, a R. Terrier b a Max-Planck-Institut für Kernphysik, P.O. Box 103980, D 69029 Heidelberg, Germany

More information

SEARCH FOR AXION- LIKE PARTICLE SIGNATURES IN GAMMA-RAY DATA

SEARCH FOR AXION- LIKE PARTICLE SIGNATURES IN GAMMA-RAY DATA SEARCH FOR AXION- LIKE PARTICLE SIGNATURES IN GAMMA-RAY DATA MANUEL MEYER, JAN CONRAD, MIGUEL SANCHEZ-CONDE DECEMBER 11, 2015 GAMMA RAYS AND DARK MATTER 2015 OBERGURGL, AUSTRIA MANUEL.MEYER@FYSIK.SU.SE

More information

Cosmic rays and the diffuse gamma-ray emission

Cosmic rays and the diffuse gamma-ray emission Cosmic rays and the diffuse gamma-ray emission Dipartimento di Fisica, Torino University and INFN Sezione di Torino via P. Giuria 1, 10125 Torino, Italy E-mail: donato@to.infn.it The diffuse γ-ray emission

More information

Cosmic Ray Astronomy. Qingling Ni

Cosmic Ray Astronomy. Qingling Ni Cosmic Ray Astronomy Qingling Ni What is Cosmic Ray? Mainly charged particles: protons (hydrogen nuclei)+helium nuclei+heavier nuclei What s the origin of them? What happened during their propagation?

More information

Gamma Ray Physics in the Fermi era. F.Longo University of Trieste and INFN

Gamma Ray Physics in the Fermi era. F.Longo University of Trieste and INFN Gamma Ray Physics in the Fermi era F.Longo University of Trieste and INFN Vulcano, May 22, 2018 F.Longo et al. -- 1 Gamma-ray astrophysics above 100 MeV AGILE Fermi 2 Picture of the day, Feb. 28, 2011,

More information

W.R. Webber. New Mexico State University, Astronomy Department, Las Cruces, NM 88003, USA

W.R. Webber. New Mexico State University, Astronomy Department, Las Cruces, NM 88003, USA A Galactic Cosmic Ray Electron Spectrum at Energies from 2 MeV to 2 TeV That Fits Voyager 5-60 MeV Data at Low Energies and PAMELA and AMS-2 Data at 10 GeV Using an Electron Source Spectrum ~E -2.25 A

More information

Recent Searches for Dark Matter with the Fermi-LAT

Recent Searches for Dark Matter with the Fermi-LAT Recent Searches for Dark Matter with the Fermi-LAT on behalf of the Fermi-LAT Collaboration CETUP* DM Workshop Deadwood, SD 7 July 2016 A One-Slide History of Dark Matter Particle Physics Astrophysics

More information

Multimessenger test of Hadronic model for Fermi Bubbles Soebur Razzaque! University of Johannesburg

Multimessenger test of Hadronic model for Fermi Bubbles Soebur Razzaque! University of Johannesburg Multimessenger test of Hadronic model for Fermi Bubbles Soebur Razzaque! University of Johannesburg with! Cecilia Lunardini and Lili Yang Multi-messenger Astronomy 2 p π ±# ν# cosmic rays + neutrinos p

More information