Journal article
Discovery of a New TeV Gamma-Ray Source: VER J0521+211
Astrophysical Journal, Vol.776(2), pp.1-10
2013
DOI: 10.1088/0004-637X/776/2/69
Abstract
We report the detection of a new TeV gamma-ray source, VER J0521+211, based on observations made with the VERITAS imaging atmospheric Cherenkov Telescope Array. These observations were motivated by the discovery of a cluster of >30 GeV photons in the first year of Fermi Large Area Telescope observations. VER J0521+211 is relatively bright at TeV energies, with a mean photon flux of (1.93 ± 0.13 stat ± 0.78 sys ) × 10 –11 cm –2 s –1 above 0.2 TeV during the period of the VERITAS observations. The source is strongly variable on a daily timescale across all wavebands, from optical to TeV, with a peak flux corresponding to ~0.3 times the steady Crab Nebula flux at TeV energies. Follow-up observations in the optical and X-ray bands classify the newly discovered TeV source as a BL Lac-type blazar with uncertain redshift, although recent measurements suggest z = 0.108. VER J0521+211 exhibits all the defining properties of blazars in radio, optical, X-ray, and gamma-ray wavelengths.
Details
- Title: Subtitle
- Discovery of a New TeV Gamma-Ray Source: VER J0521+211
- Creators
- S Archambault - McGill UniversityP Kaaret - University of IowaT Arlen - University of California, Los AngelesJ Liu - Columbia UniversityT Aune - University of California, Los AngelesB BeheraM Beilicke - Washington University in St. LouisW Benbow - Harvard UniversityR Bird - University College DublinA Bouvier - University of California, Santa CruzJ. H Buckley - Washington University in St. LouisV Bugaev - Washington University in St. LouisK Byrum - Argonne National LaboratoryA Cesarini - Ollscoil na Gaillimhe – University of GalwayL Ciupik - Adler PlanetariumM. P Connolly - Ollscoil na Gaillimhe – University of GalwayW Cui - Purdue University West LafayetteM Errando - Columbia UniversityA Falcone - Pennsylvania State UniversityQ Feng - Purdue University West LafayetteS Federici - University of PotsdamJ. P Finley - Purdue University West LafayetteL Fortson - University of MinnesotaA Furniss - University of California, Santa CruzN Galante - Harvard UniversityD Gall - University of IowaG. H Gillanders - Ollscoil na Gaillimhe – University of GalwayS Griffin - McGill UniversityJ Grube - Adler PlanetariumG Gyuk - Adler PlanetariumD Hanna - McGill UniversityJ Holder - University of DelawareG HughesT. B Humensky - Columbia UniversityM Kertzman - DePauw UniversityY Khassen - University College DublinD Kieda - University of UtahH KrawczynskiF Krennrich - Iowa State UniversityS Kumar - University of DelawareM. J Lang - Ollscoil na Gaillimhe – University of GalwayA. S Madhavan - Iowa State UniversityG MaierP Majumdar - Saha Institute of Nuclear PhysicsS McArthur - University of ChicagoA McCann - University of ChicagoJ Millis - Purdue University West LafayetteP Moriarty - Galway-Mayo Institute of TechnologyR Mukherjee - Columbia UniversityA O’Faoláin de BhróitheR. A Ong - University of California, Los AngelesA. N Otte - Georgia Institute of TechnologyN Park - University of ChicagoJ. S Perkins - Goddard Space Flight CenterM Pohl - University of PotsdamA Popkow - University of California, Los AngelesHeike Prokoph - DESY, GermanyJ Quinn - University College DublinK Ragan - McGill UniversityL. C Reyes - California Polytechnic State UniversityP. T Reynolds - Cork Institute of TechnologyG. T Richards - Georgia Institute of TechnologyE Roache - Harvard UniversityD. B Saxon - University of DelawareG. H Sembroski - Purdue University West LafayetteA. W Smith - University of UtahD Staszak - McGill UniversityI Telezhinsky - University of PotsdamM Theiling - Purdue University West LafayetteA Varlotta - Purdue University West LafayetteV. V Vassiliev - University of California, Los AngelesS VincentS. P Wakely - University of ChicagoT. C Weekes - Harvard UniversityA Weinstein - Iowa State UniversityR WelsingD. A Williams - University of California, Santa CruzB Zitzer - Argonne National LaboratoryM Böttcher - North-West UniversityS. J Fegan - École PolytechniqueP Fortin - Harvard UniversityJ. P Halpern - Columbia UniversityY. Y KovalevM. L Lister - Purdue University West LafayetteA. B PushkarevP. S Smith - University of ArizonaVERITAS Collaboration
- Resource Type
- Journal article
- Publication Details
- Astrophysical Journal, Vol.776(2), pp.1-10
- DOI
- 10.1088/0004-637X/776/2/69
- ISSN
- 0004-637X
- eISSN
- 1538-4357
- Language
- English
- Date published
- 2013
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199777902771
Metrics
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