VERITAS. Results. Results from VERITAS. Frank Krennrich for the VERITAS Collaboration Iowa State University
|
|
- Theodore Pitts
- 5 years ago
- Views:
Transcription
1 VERITAS Results from VERITAS Results Frank Krennrich for the VERITAS Collaboration Iowa State University RICAP09 Frascati May
2 Outline Particle Astrophysics
3 VERITAS Collaboration U.S. Adler Planetarium Argonne Nat. Lab. Barnard College DePauw U. Grinnell College Iowa State U. Purdue U. Smithsonian UCLA UCSC U. Of Chicago U. of Delaware Univ. of Iowa U. of Massachusetts U. of Utah Washington U. Canada McGill U. U.K. Leeds U. Ireland Cork Inst.Tech. Galway-Mayo Inst. N. U. I., Galway U. College Dublin + 25 Associates Supported by: SI, NSF & DOE (US), PPARC (UK), NSERC (Canada), SFI (Ireland)
4 Outline T2 Spring 2006 T3 Fall 2006 T4 Future Spring Prospects 2007 T1 Jan 2005
5 Monitoring Capability
6 VERITAS Instruments Davies-Cotton f/1.0 Optics. Total area=110m 2 FOV ~ 3.5 o Pix. ~ 0.15 o 500 Pixels Control Room 500 Msp/s
7 VERITAS Performance 1 Crab ~ 30s 0.02 Crab ~7 h Mirrors degraded Less sensitive now! - Energy range: 100 GeV - 30 TeV - Energy resolution: 15% - 20% - Spectral reconstruction: E > 150 GeV - Angular resolution (per event): r 68 = 0.1 o - Crab rate 37 min -1 (trigger level) - 1% Crab detection in less than 50h, - 5% crab in ~2.5 hours Design Sensitivity already met! 20% better Sensitivity Fall Crab ~ 80s 0.02 Crab ~13 h 1% Crab 47 h 5 % Crab 2.5 h 1 Crab ~ 250s 0.02 Crab ~60 h Crab θ 2
8 VERITAS Science Program Observations: ~ 800 hrs / year + ~ 200 hrs / year moonlight Discretionary (10%) ToO s GRB s (priority) etc. Key Science Projects (50%) Bulk Program (40%) Science Groups: Astroparticle Physics Blazars Dark Matter Extragal. Sources Galactic Compact Galactic Diffuse GRB s PWN & SNR s Unidentifieds Sky Survey (Cygnus region) BLAZARS SNRs/PWN Dark Matter
9 VERITAS Detections Blazar Science Galactic Science 4 source discoveries 11 detections - detailed studies - multiwavelength campaigns (Blazars, radio galaxy) 1 discovery (SNR) 4 detections - detailed studies - multiwavelength campaigns (X-ray Binary, Unid., SNR) Survey of Cygnus region
10 Galactic Sources
11 Supernova Remnants: IC443 - middle aged, 3-30 kyr - distance: 1.5 kpc - shell structure optical/radio - diameter: 0.75 o - Molecular Cloud (CO) - PWN CXOU J interesting for TeV studies - VERITAS/MAGIC Co-discovery -> VERITAS: 6.0 σ (7.1 σ pre-trial) in 15.9 h -> MAGIC: 5.7 σ in 29 h Green Radio Red Optical Blue X-rays - VERITAS deeper observations: 37.9 h -> 8.3 σ
12 Supernova Remnants: IC443 + CO intensity Optical Pulsar Wind Nebula Maser emission VERITAS centroid MAGIC centroid TeV emission: - extended: 0.16 o ± 0.03 o - coincides with MC (densest part) - associated with PWN (10 offset) - Maser emission - could arise from neutral pion interaction in MC or from relic electrons produced by pulsar and still residing in MC -> critical are GeV/TeV studies Energy spectrum: dn/de = (8.38±2.10) E -2.99±0.38 photons TeV -1 cm -2 s -1 F. Krennrich, APS April Meeting May 5, 2009, Future Acciari Facilities et al. ApJ, in press (2009)
13 Supernova Remnants: Cas A - Young (330 yr), Shell-type - Distance ~ 3.4 kpc - massive star progenitor deg. diameter ~ TeV PSF - Discovered in TeV by HEGRA - (232 hrs, 5 σ), confirmed by MAGIC (47 hrs, 5.3 σ) -> Flux 3.3% Crab -> Γ = 2.3 ± 0.2 stat ± 0.2 sys Deep Chandra image of Cas A (7.3ʼ by 6.4ʼ)
14 Supernova Remnants: Cas A σ in 22 hours - Flux 3% Crab - consistent with point source - upper limit on source extension 2 - Γ = 2.61 ± 0.24 stat ± 0.20 sys Deep Chandra image of Cas A (7.3ʼ by 6.4ʼ) Acciari et al., in preparation (2009)
15 Northern Pulsar Wind Nebulae Source Crab Nebula PSRJ PSRJ PSRJ PSRB PSRJ log10 (E/d 2 ) [erg/s/kpc 2 ] time [hrs] σ F(E>300 GeV) [% Crab] - Strong candidates for TeV emission (8 PWN in southern hemishere by HESS) Future - selection Prospects of pulsars with high energy loss rate and per distance 2 - Most sensitive survey of PWN at high gal. longitudes - nearby pulsar (e+ excess in C.R. spectrum? arxiv: v2 : v2) - Milagro excess at ~ 35 TeV (arxiv: ) 100 <2.3 <1.3 <1.6 <1.2 <1.0
16 X-ray Binary LS I High-mass X-ray binary at ~2 kpc: massive Be star + compact companion (neutron star / BH) - Orbital period 26.5 days with ε ~ Radio / X-ray emissions correlated with orbital period Acciari et al., ApJ, 679, 1427 (2009) - Emission mechanism unknown: Microquasar or interacting PWN? (+strong propagation/absorption effects) - TeV emission discovered by MAGIC in 2006, confirmed by VERITAS % Crab at apastron
17 LS I : Fermi/VERITAS VERITAS Fermi Fermi - No detection during Fermi high state emission (periastron) - spectra line up well (?), but fluxes are anti-correlated Fermi VERITAS November 2008 F(E>500 GeV)< 1.26x10-12 cm -2 s -1 (2.1% Crab, 99% CL) Acciari et al., ApJ, in press (2009b)
18 Unid.. HESS J Point-like Unid. (1 of 2) - Detected by HESS in VERITAS Obs. Dec 2006, 2008, - Interpretation: Binary system? Jan 2009: upper limit ~ 1% Summary Crab - Coincident with Be star MWC Rejection of constant flux hypothesis - No companion yet detected; no at prob % (4 σ) information on period - Variable X-ray emission (Hinton 2009) Acciari et al., ApJ, in press (2009)
19 AGILE J AGILE transient E > 100 MeV - Consistent with 3EG J Astronomer's telegrams (#1492, 1547, 1585) issued on Apr 28, May 27, and Jun by AGILE - VERITAS observation 7 hours between Apr 29 May Preliminary upper limit F(E > 300 GeV) ~ 2% Crab (99% CL) Preliminary
20 Extragalactic Sources
21 Discovery: 1ES one of best candidate TeV BL Lacs (Costamante & Ghisellini 2002) - HBL - z = σ in ~ 40 hours - flux ~ 0.01 Crab - weakest VERITAS blazar - spectrum appears soft: N/dE ~ E Acciari et al. ApJ, 690, L126 (2009)
22 Discovery: W Comae - discovered in radio 1971, in X-ray IBL (falls between LBL- HBL) - seen by EGRET: (27) GeV - z = σ in ~ 40 hours - outburst March 08 (> 8 σ detection) - Quasi-simultaneous X-ray data (Swift) σ t = days
23 Discovery: W Comae - one zone SSC model yields a weak B-field - EC yields B ~ 0.3 G - GeV - TeV coverage is critical dn de " E #3.81±0.35 stat Quasi-simultaneous data March 14/ from AAVSO, UVOT, XRT, VERITAS
24 Discovery*: 3C66A - EGRET detection, Fermi (ATEL #1759) - Crimean* group 5.1 σ in nd IBL in TeV: VERITAS (ATEL#1753) - z=0.44 highly uncertain - z > (Finke et al 2008) - TeV Emission is consistent with 3C66A - Upper limit on 3C66B 5.4 Acciari et al. ApJ, 693, L104 (2009) F. Krennrich, Aliu et al., APS ApJ, April 692, Meeting L29 (2009) May 5, 2009, Future Facilities - MAGIC detection of 3C66B in σ in 54 h, 2.7% Crab - VERITAS detection of 3C66A in σ,, ~1800 γ; E th ~ 120 GeV ; in 33 h - spectral index is Γ = 4.1 ± 0.4 stat ± 0.6 stat - if z=0.44 then Γ intr = 1.1 ± 0.4
25 Discovery: RGB J HBL, z ~ Discovered by VERITAS as part of - blazar filler program - ATel #1941, 2/24/ hrs livetime, 6.3 σ, 140 γ rays - Multiwavelength data, analysis in progress Acciari et al., in preparation (2009)
26 Mrk Observed: Jan - June 2008, - ~40 h, ~280σ, >30,000 γ - Whipple 10-m Alert! ATel #1506; - Swift, RXTE, optical/radio - Flux: Crab - VERITAS light-curves w/ minute-scale bins - Peak detection: 5σ in ~15s - VHE & X-ray fluxes are highly correlated - VHE & X-ray spectra harden w/ high flux - VERITAS data: Paper in ~months - June 08: VERITAS, MAGIC, AGILE + X- ray/optical - Astrophysical Journal, 691, L13, 2009
27 Distant Blazars: : 1ES dn de " E #3.09±0.34 stat Courtesy of M. Beilicke Courtesy of P. Fortin z=0.182
28 Distant Blazars: : 1ES dn de " E #3.09±0.34 stat Courtesy of P. Fortin Krennrich, Dwek & Imran, 2008, ApJL, 689, L93 z=0.182
29 - Non-blazar: - Jet ~ 30º, D~16 Mpc - SMBH ~3x10 9 M sun - jet structure: radio-optical-x-ray - variable in X-rays - TeV image is not resolved - VERITAS low-state detection in Point-like (>250 GeV) ) emitter at core, Γ 2.3 ± 0.2 M87 80 pc 15 F. Krennrich, Acciari et APS al., ApJ, April, Meeting 679, 397, May , 2009, Future Facilities
30 M87 - VERITAS / MAGIC / HESS campaign 2008: 120 h, 50 nights + 5 Chandra pointings - VERITAS: ~45 h, ~7σ in Outburst in February 2008 confirms day scale variability! - Correlation to X-ray brightening in core: VHE likely not associated with HST-1
31 GRB Searches - VHE Emission has been predicted on a variety of time scales: Prompt: would be an indication of extraordinarily relativistic bulk flows Afterglow Emission: many models show a blazar-like SED X-ray Flares: lots of seed photons available for IC scattering GRB observations take precedence over all other observations Response times of a few minutes (best is 92 seconds) Observations of 22 GRBs less than 3 hrs old 10 bursts satisfying Good Weather, High Elevation, No Moonlight 99% C.L. limits typically < 1-4% Crab
32 Particle Astrophysics
33 Dark Matter Fermilab Tevatron Large Hadron Collier Soudan Produce neutralino in laboratory Only direct link between a neutralino and dark matter halo profiles Extragalactic Three complementary Science Indirect detection of astrophysical γ-rays from DM self-annihilation approaches COUPP Heavy Liquid Bubble Chamber Directly detect DM WIMP in specialty detectors in (underground) labs
34 Dark Matter Searches - Dwarf Galaxy Survey - Extremely dark matter (DM) dominated objects - clean source in γ-rays due to low star formation rate - 1% Crab limits on Draco, Ursa Minor, Willman I - Also: Local Group Galaxies and Galaxy Clusters - Can have astrophysical motivations / backgrounds Acciari et al., in preparation (2009)
35 Future Plans
36 VERITAS Upgrade Baseline Plan: - move T1 (20% sensitivity) - Superbialkali (lower E thres, sensitivity) - upgrade trigger system: real-time γ/hadron separation, lower E thres Enhanced Plan: - one additional telescope - active mirror alignment system
37 Summary VERITAS Instrument is working extremely well - 95% uptime - excellent performance - meets predicted sensitivity - significant VERITAS & cost effective Overview upgrades first ~ 2 years of the VERITAS Science program successful - several Galactic source discoveries Science - many detections and multiwavelength campaigns - more results at the ICRC 2009 (Lodz) Science Highlights: - discovery of IBLs as a new class of blazars (GeV/TeV overlap) - extended TeV emission from SNR IC443 - detailed Future studies Prospects of HMXB LS I galactic plane survey of Cygnus region (results at ICRC) - radio galaxy M87: TeV/X-ray emission from core? VERITAS Science program is broad and also incl. - Dark Matter searches - GRB ToOs
38 Backup Slides
39 1ES HBL - z = discovered 1995 by Whipple Crab - VERITAS Observations Oct Jan σ detection - Swift: highest known X-ray flux on Dec VHE flux on Dec. 6/7 07: 0.41 Crab
40 Mrk HBL - z = old faithful - Early 2008: Crab - TeV monitor of transients ATEL#1506
TEV GAMMA RAY ASTRONOMY WITH VERITAS
1 TEV GAMMA RAY ASTRONOMY WITH VERITAS Tülün Ergin (U. of Massachusetts Amherst, MA) on behalf of the VERITAS Collaboration 2 Contents The VERITAS Experiment Results and the Performance Galactic Sources
More informationGalactic Sources in Cygnus. Rene A. Ong (UCLA)
VERITAS Results on Galactic Sources in Cygnus (UCLA) for the VERITAS Collaboration ICRC 2013 (Rio de Janeiro) July 2013 OUTLINE VHE γ-rays as probes of Galactic CR origin The VERITAS Observatory The Cygnus
More informationVery-High-Energy Gamma-Ray Astronomy with VERITAS. Martin Schroedter Iowa State University
Very-High-Energy Gamma-Ray Astronomy with VERITAS Martin Schroedter Iowa State University Summary Very-high-energy astronomy began 20 years ago with 1 source. Now ~80 more VHE discoveries have been made
More informationRecent highlights from VERITAS
Recent highlights from VERITAS K. Ragan McGill University RICAP 2011, Rome, 26-May-2011 K. Ragan VERITAS RICAP '11 1 Outline Very high-energy (VHE) gamma-ray astrophysics Ground-based observations with
More informationVERITAS Observations of Supernova Remnants
VERITAS Observations of Supernova Remnants Reshmi Mukherjee 1 for the VERITAS Collaboration 1 Barnard College, Columbia University Chandra SNR Meeting, Boston, Jul 8, 2009 Outline (Quick) introduction
More informationRecent 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 informationTeV 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 informationVERITAS: Status and Highlights
VERITAS: Status and Highlights Jamie Holder 1 for the VERITAS Collaboration 2 1. Bartol Research Institute/ University of Delaware 2. http://veritas.sao.arizona.edu 32 nd ICRC Beijing, August 2011 1 Smithsonian
More informationVERITAS a Status Report. Nepomuk Otte on behalf of the VERITAS Collaboration
VERITAS a Status Report Nepomuk Otte on behalf of the VERITAS Collaboration The VERITAS Collaboration ~100 members, 20 institutions 23 non-affiliated members +35 associate members Smithsonian Astrophysical
More informationStatus 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 informationVERITAS Observations of Starburst Galaxies. The Discovery of VHE Gamma Rays from a Starburst Galaxy
VERITAS Observations of Starburst Galaxies The Discovery of VHE Gamma Rays from a Starburst Galaxy Wystan Benbow for the VERITAS Collaboration 1 Harvard-Smithsonian Center for Astrophysics 1 see R.A. Ong
More informationVERITAS Observations of Relativistic Jets
VERITAS Observations of Relativistic Jets 1 for the VERITAS Collaboration 1Barnard College, Columbia University Sensitivity improvement: 1% Crab in ~25 hr Sensitive energy range: 100 GeV to 30 TeV Spectral
More informationVERITAS: exploring the high energy Universe
VERITAS: exploring the high energy Universe K. Ragan McGill University Queen's - March '09 VERITAS 1 Outline Beyond the optical Very high-energy (VHE) gamma-ray astrophysics Ground-based observations Cherenkov
More informationThe Mysterious VERITAS. Rene A. Ong Moreno Valley College 19 April. Cas A VERITAS
The Mysterious Gamma-Ray Universe VERITAS VERITAS Cas A Rene A. Ong Talk @ Moreno Valley College 19 April Rene A. 2012 Ong Outline 1. The Gamma-Ray Universe: A new Astronomical window Relevant Physics
More informationRecent Results from VERITAS
Recent Results from VERITAS Physics Department, McGill University, Montreal, Canada E-mail: hanna@physics.mcgill.ca VERITAS (Very Energetic Radiation Imaging Telescope Array System) is an array of four
More informationThe Very High Energy Universe
The Very High Energy Universe VERITAS (Mt. Hopkins, AZ) Tel 4 Tel 1 Tel 3 Tel 2 VERITAS Rene A. Ong Colloquium @ U. Wisconsin 04 Dec 2009 Outline Scientific Motivation A New Astronomy Physicist s Viewpoint
More informationGalactic sources in GeV/TeV Astronomy and the new HESS Results
Galactic sources in GeV/TeV Astronomy and the new HESS Results Martin Tluczykont for the HESS Collaboration LLR Ecole Polytechnique Joint Symposium on GeV-TeV Astrophysics in the GLAST Era Stanford, September
More informationGamma-ray Astrophysics with VERITAS: Exploring the violent Universe
Gamma-ray Astrophysics with VERITAS: Exploring the violent Universe K. Ragan McGill University Soup & Science 11-Jan-2008 Soup & Science Jan. '08 1 How do we know about the Universe? Historically, all
More informationResults & publications
Overview VHE science, experiments & status t VERITAS history & performance Collaboration structure Results & publications Rene A. Ong (UCLA) for the VERITAS Collaboration 31 st ICRC, Łódź, Highlight: Recent
More informationFermi: 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 informationParticle Astrophysics at Very High Energies
Particle Astrophysics at Very High Energies VERITAS (Mt. Hopkins, AZ) Tel 4 Tel 1 Tel 3 Tel 2 VERITAS Rene A. Ong Colloquium @ Ga Tech 28 Oct 2009 Outline Scientific Motivation A New Astronomy Physicist
More informationVariability 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 informationObserving Galactic Sources at GeV & TeV Energies (A Short Summary)
1 Observing Galactic Sources at GeV & TeV Energies (A Short Summary) Tülün Ergin Univ. of Massachusetts, Amherst Air Cherenkov Telescopes 2 Past IACTs: HEGRA, Whipple, CANGAROO Present/Future IACTs: H.E.S.S.,
More informationStatus 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 informationHighlights from the VERITAS AGN Observation Program
Highlights from the VERITAS AGN Observation Program W. Benbow 1,a) and the VERITAS Collaboration 2 1 Harvard-Smithsonian Center for Astrophysics, 60 Garden St, Cambridge, MA, 02180, USA 2 http://veritas.sao.arizona.edu/
More information10 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 informationOBSERVATIONS OF VERY HIGH ENERGY GAMMA RAYS FROM M87 BY VERITAS
OBSERVATIONS OF VERY HIGH ENERGY GAMMA RAYS FROM M87 BY VERITAS 1 Tülün Ergin (U. of Massachusetts Amherst, MA) on behalf of the VERITAS Collaboration (http://veritas.sao.arizona.edu) APOD, 2004 December
More informationGamma-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 informationBrian Humensky for the VERITAS Collaboration December 10, 2009
Brian Humensky for the VERITAS Collaboration December 10, 2009 Univ ersit y of Chicago 1ES 0502+675 1ES 0229+200 27 Source Detections in 6 source classes, at least 10 in the Galactic Plane http://tevcat.uchicago.edu
More informationVHE gamma-ray emission from binary systems observed with the MAGIC telescopes
VHE gamma-ray emission from binary systems observed with the MAGIC telescopes Alicia López Oramas (IAC) O. Blanch, E. de Oña Wilhelmi, A. Fernández-Barral, D. Hadasch, J. Herrera, E. Moretti, P. Munar-Adrover,
More informationTeV Observations of Extragalactic Sources
TeV Observations of Extragalactic Sources Henric Krawczynski (Washington University in St. Louis), Oct. 2, 2009 Plan of Talk: Status of Experiments Key-Results: Radio Galaxies Blazars Starburst Galaxies
More informationVery High-Energy Gamma- Ray Astrophysics
Very High-Energy Gamma- Ray Astrophysics David A. Williams Santa Cruz Institute for Particle Physics UC Santa Cruz Quarknet July 12, 2013 Detecting High Energy Gamma Rays High Sensitivity HESS, MAGIC,
More informationPoS(Extremesky 2011)036
Univ. Complutense of Madrid E-mail: marcos@gae.ucm.es The MAGIC (Major Atmospheric Gamma-ray Imaging Cherenkov) telescopes were designed to reach the lowest possible energy threshold using the ground-based
More informationGamma-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 informationVery High Energy (VHE) γ-ray Astronomy: Status & Future
6 th Rencontres du Vietnam: Particle Astrophysics Very High Energy (VHE) γ-ray Astronomy: Status & Future Rene A. Ong University of California, Los Angeles OUTLINE Scientific Motivation Origin of cosmic
More informationTeV Future: APS White Paper
TeV Future: APS White Paper APS commissioned a white paper on the "Status and Future of very high energy gamma ray astronomy. For preliminary information, see http://cherenkov.physics.iastate.edu/wp Working
More informationViewing the Universe in High-Energy γ-rays with VERITAS
Viewing the Universe in High-Energy γ-rays with VERITAS VERITAS VERITAS Cas A Rene A. Ong Colloquium @ IAFE, Buenos Aires 20 Sept Rene A. 2011 Ong Outline The (Non-Thermal) GeV/TeV Universe: A new astronomical
More informationGLAST and beyond GLAST: TeV Astrophysics
GLAST and beyond GLAST: TeV Astrophysics Outline: Greg Madejski Assistant Director for Scientific Programs, SLAC / Kavli Institute for Astrophysics and Cosmology Recent excitement of GLAST and plans for
More informationHAWC Observation of Supernova Remnants and Pulsar Wind Nebulae
HAWC Observation of Supernova Remnants and Pulsar Wind Nebulae a, and H. Zhou a for the HAWC Collaboration b a Department of Physics, Michigan Technological University 1400 Townsend Drive, Houghton, MI,
More informationThe 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 informationThe VERITAS Dark M atter and Astroparticle Programs. Benjamin Zitzer For The VERITAS Collaboration
The VERITAS Dark M atter and Astroparticle Programs Benjamin Zitzer For The VERITAS Collaboration Introduction to VERITAS Array of four IACTs in Southern AZ, USA Employs ~100 Scientists in five countries
More informationH.E.S.S. High Energy Stereoscopic System
H.E.S.S. High Energy Stereoscopic System MPI Kernphysik, Heidelberg Humboldt Univ. Berlin Ruhr-Univ. Bochum Univ. Hamburg Landessternwarte Heidelberg Univ. Kiel Ecole Polytechnique, Palaiseau College de
More informationOn the scientific motivation for a wide field-of-view TeV gamma-ray observatory in the Southern Hemisphere
On the scientific motivation for a wide field-of-view TeV gamma-ray observatory in the Southern Hemisphere for the HAWC collaboration E-mail: miguel@psu.edu Observations of high energy gamma rays are an
More informationVERITAS detection of VHE emission from the optically bright quasar OJ 287
VERITAS detection of VHE emission from the optically bright quasar OJ 287 S. Zola & NASA/JPL S. O Brien For The VERITAS Collaboration Outline 1. OJ 287 2. Historical Observations and Monitoring Programs
More informationObservations of Supernova Remnants with VERITAS
Observations of Supernova Remnants with VERITAS Presented by Nahee Park What do we want to learn? Are SNRs the main accelerators of the Galactic cosmic rays? Efficiency of cosmic-ray acceleration? Maximum
More informationThe connection between millimeter and gamma-ray emission in AGNs
The connection between millimeter and gamma-ray emission in AGNs Marcello Giroletti INAF Istituto di Radioastronomia Secondo Workshop sull'astronomia millimetrica e submillimetrica in Italia Bologna, 2-3
More informationVERY HIGH-ENERGY GAMMA-RAY ASTRONOMY
VERY HIGH-ENERGY GAMMA-RAY ASTRONOMY Rene A. Ong Department of Physics and Astronomy, University of California, Los Angeles, Los Angeles, CA 90095, U.S.A. Very high-energy (VHE) γ-ray astronomy is an exciting
More informationVERITAS Performance Gernot Maier
VERITAS Performance Gernot Maier Alliance for Astroparticle Physics What scientific impact will VERITAS have in the next 3-5 years? Galactic long-term plan Performance Operations LTP & Performance May
More informationExtreme 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 informationGalactic 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 informationScientific Highlights from AGN Observations with the MAGIC Telescope
Scientific Highlights from AGN Observations with the MAGIC Telescope Robert Marcus WAGNER Max-Planck-Institut für Physik, München on behalf of the MAGIC COLLABORATION MAGIC Major Atmospheric Gamma-ray
More informationGamma-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 informationRadio 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 informationConstraints 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 informationDetermining the TeV Gamma-Ray Emission Region in the Relativistic Jet of M87 using TeV and Radio Monitoring
Determining the TeV Gamma-Ray Emission Region in the Relativistic Jet of M87 using TeV and Radio Monitoring R. M. Wagner Max-Planck-Institut für Physik, München and Excellence Cluster Origin and Structure
More informationVHE Galactic Source. Rene A. Ong (LLR-Ecole Polytechnique / UCLA)
VHE Galactic Source Highlights ht from VERITAS (LLR-Ecole Polytechnique / UCLA) Paris Seminar (Jussieu), 14 June 2011 OUTLINE Scientific Motivations The atmospheric Cherenkov technique and the VERITAS
More informationPulsar 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 informationVERITAS. Tel 3. Tel 4. Tel 1. Tel 2
VHE Astrophysics with VERITAS VERITAS Tel 2 Tel 1 Tel 4 Tel 3 Rene A. Ong Caltech/Kellogg Seminar 29 Feb 2008 Outline Scientific Motivation A New Astronomy Physicist s Viewpoint Astrophysical TeV accelerators
More informationarxiv: v1 [astro-ph.he] 28 Aug 2015
arxiv:1508.07358v1 [astro-ph.he] 28 Aug 2015 for the VERITAS Collaboration University of Minnesota E-mail: shahin@astro.umn.edu HESS J1943+213 is a very-high-energy (VHE; >0 GeV) gamma-ray point source
More informationHighlights from the ARGO-YBJ Experiment
Highlights from the ARGO-YBJ Experiment Ivan De Mitri University of Salento and Istituto Nazionale di Fisica Nucleare Lecce, Italy On behalf of the ARGO-YBJ Collaboration 12th International Conference
More informationActive 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 informationDiffuse TeV emission from the Cygnus region
Diffuse TeV emission from the Cygnus region References: Discovery of TeV gamma-ray emission from the Cygnus region of the Galaxy Abdo et al., astro-ph/0611691 Dissecting the Cygnus region with TeV gamma
More informationMasaki Mori. Institute for Cosmic Ray Research, University of Tokyo
Masaki Mori Institute for Cosmic Ray Research, University of Tokyo International Workshop on Advances in Cosmic Ray Science March 17-19, 2008, Waseda University, Shinjuku, Tokyo, Japan > TeV gamma-rays
More informationVHE Galactic Source. Rene A. Ong (LLR-Ecole Polytechnique / UCLA)
VHE Galactic Source Highlights ht from VERITAS Rene A. Ong (LLR-Ecole Polytechnique / UCLA) SACLAY Seminar, 28 July 2011 OUTLINE Scientific Motivations The atmospheric Cherenkov technique and VERITAS Bonus:
More informationAGILE Highlights. The AGILE Mission. Stefano Vercellone and the AGILE Team at IASF Milano
The AGILE Mission AGILE Highlights Stefano Vercellone and the AGILE Team at IASF Milano AGILE Highlights Visiting Committee Review - Milano, January 8 th, 2008 1 AGILE in a nutshell Super-AGILE AGILE-GRID
More informationH.E.S.S. Unidentified Gamma-ray Sources in a Pulsar Wind Nebula Scenario And HESS J
H.E.S.S. Unidentified Gamma-ray Sources in a Pulsar Wind Nebula Scenario And HESS J1303-631 Matthew Dalton Humboldt University at Berlin For the H.E.S.S. Collaboration TeV Particle Astrophysics, Paris.
More informationThe VERITAS Survey of the Cygnus Region of the Galaxy
The VERITAS Survey of the Cygnus Region of the Galaxy for the VERITAS collaboration University of California, Los Angeles E-mail: apopkow@ucla.edu The Cygnus region is a very active region of our Galaxy
More informationDiscovery of a New Gamma-Ray Binary: 1FGL J
Discovery of a New Gamma-Ray Binary: 1FGL J1018.6-5856 Robin Corbet (UMBC/NASA GSFC) on behalf of the Fermi-LAT collaboration, & M.J. Coe, P.G. Edwards, M.D. Filipovic, J.L. Payne, J. Stevens, M.A.P. Torres
More informationPERSPECTIVES 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 informationA 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 informationNon-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 informationFermi-Large Area Telescope Observations of Pulsar Wind Nebulae and their associated pulsars
Fermi-Large Area Telescope Observations of Pulsar Wind Nebulae and their associated pulsars Marie-Hélène Grondin CENBG, Bordeaux (France) on behalf of the Fermi-LAT Collaboration and the Pulsar Timing
More informationHAWC: A Next Generation All-Sky VHE Gamma-Ray Telescope
HAWC: A Next Generation All-Sky VHE Gamma-Ray Telescope VHE Astrophysics Energy range 10 GeV 10 TeV Non thermal processes in the universe Highly variable sources Particle acceleration Physics of extreme
More informationCosmic 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 informationDiscovery of TeV Gamma-ray Emission Towards Supernova Remnant SNR G Last Updated Tuesday, 30 July :01
Background-subtracted gamma-ray count map of SNR G78.2+2.1 showing the VERITAS detection (VER2019+407). For details, see Figure 1 below. Reference: E. Aliu et al. (The VERITAS Collaboration), Astrophysical
More informationNikolay 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 informationThe Extreme Universe Rene A. Ong Univ. of Michigan Colloquium University of California, Los Angeles 23 March 2005
The Extreme Universe Rene A. Ong Univ. of Michigan Colloquium University of California, Los Angeles 23 March 2005 OUTLINE Introduction Messengers,, energy scales, & questions. Detecting Very High Energy
More informationVery High Energy monitoring of the radio galaxy M87 with MAGIC during a low emission state between 2012 and 2015
Very High Energy monitoring of the radio galaxy M87 with MAGIC during a low emission state between 2012 and 2015 ICRR, U-Tokyo and Max-Planck-Institute for Physics, Munich and P. Bangale, M. Manganaro,
More informationHigh Energy Emission. Brenda Dingus, LANL HAWC
High Energy Emission from GRBs Brenda Dingus, LANL HAWC What are GRBs? Cosmological distance Typical observed z>1 Energy released is up to few times the rest mass of Sun (if isotropic) in a few seconds
More informationSources 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 informationAGILE 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(Future) Experiments for gamma-ray detection
(Future) Experiments for gamma-ray detection K. Ragan McGill University ISSS (GSSI) June 2017 Cosmic Ray Physics in Space K. Ragan ISSS Jun 2017 1 Menu Antipasti Introduction & motivation: why study GeV/TeV
More informationRecent results in very high energy gamma ray astronomy
Recent results in very high energy gamma ray astronomy J-F. GLICENSTEIN DSM/IRFU/SPP CEA-Saclay, F-91191 Gif-sur-Yvette, France The very high energy (E 5 GeV) gamma ray astronomy is an emerging field.
More informationGalactic Accelerators : PWNe, SNRs and SBs
TeV γ-ray Observations and Implications for Galactic Accelerators : PWNe, SNRs and SBs (co-chair, HESS working group on SNRs, pulsars and PWNe) LPTA, Montpellier, France Particle Acceleration in Astrophysical
More informationmicroquasars and binary pulsar systems
Josep M. Paredes Gamma-ray binaries: microquasars and binary pulsar systems SciNeGHE 2010 8th Workshop on Science with the New Generation of High Energy Gamma-ray Experiments Trieste, September 8th - 10th
More informationMulti-messenger studies of point sources using AMANDA/IceCube data and strategies
Multi-messenger studies of point sources using AMANDA/IceCube data and strategies Cherenkov 2005 27-29 April 2005 Palaiseau, France Contents: The AMANDA/IceCube detection principles Search for High Energy
More informationVERITAS detection of VHE emission from the optically bright quasar OJ 287
VERITAS detection of VHE emission from the optically bright quasar OJ 287 for the VERITAS Collaboration University College Dublin E-mail: stephan.o-brien@ucdconnect.ie We report on the VERITAS detection
More informationRemnants 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 informationMulti-Messenger Programs in ANTARES: Status and Prospects. Véronique Van Elewyck Laboratoire AstroParticule et Cosmologie (Paris)
Multi-Messenger Programs in ANTARES: Status and Prospects Laboratoire AstroParticule et Cosmologie (Paris) An overview Externally triggered neutrino searches: the example of GRBs Strategies for data acquisition
More informationSearch for TeV Radiation from Pulsar Tails
Search for TeV Radiation from Pulsar Tails E. Zetterlund 1 1 Augustana College, Sioux Falls, SD 57197, USA (Dated: September 9, 2012) The field of very high energy astrophysics is looking at the universe
More informationGamma 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 informationObservations 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 informationVERITAS Design. Vladimir Vassiliev Whipple Observatory Harvard-Smithsonian CfA
VERITAS Design Vladimir Vassiliev Whipple Observatory Harvard-Smithsonian CfA VERITAS design goals VERITAS is a ground-based observatory for gamma-ray astronomy VERITAS design is derived from scientific
More informationScientific highlights and status of the MAGIC Telescope
Scientific highlights and status of the Telescope Outline: Introduction Galactic observations Extragalactic observations Dark mater searches -II Marcos Lopez INFN/Padova The Collaboration Collaboration:
More informationDieter Horns, MPI-K, Heidelberg 3 H46+48 (Aharonian et al. ) ES (Götting et al. ICRC ) Mkn 5 (Bradbury et al. 997, Aharonian et al. 997,999a,999
Recent results and status of HEGRA Performance and Status of HEGRA Galactic Sources (st Unidentified TeV source, Gal. plane scan) Extragal. Sources (Mkn 4, H46+48, ES959+65) Summary Dieter Horns for the
More informationSpace Astronomy Facilities
ASI and bi/multilateral Space Astronomy Facilities Paolo Giommi Italian Space Agency, ASI 10 February 2010 COPUOS - Vienna 1 AGILE: an Italian Small Mission AGILE: an Italian small scientific mission Devoted
More informationGamma-ray Astrophysics and High Density e+ e- Plasma - A new application of Free Electron Laser? -
Gamma-ray Large Area Space Telescope Gamma-ray Astrophysics and High Density e+ e- Plasma - A new application of Free Electron Laser? - Tuneyoshi Kamae SLAC, GLAST Group Gamma-ray observatories in next
More informationThe 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 informationFermi Large Area Telescope:
Fermi Large Area Telescope: Early Results on Pulsars Kent Wood Naval Research Lab kent.wood@nrl.navy.mil for the Fermi LAT Collaboration Tokyo Institute of Technology 7 March 2009 K. Wood (NRL) 1/30 Fermi
More informationGamma-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