DISCOVERY OF A NEW TeV GAMMA-RAY SOURCE: VER J0521+211

S. Archambault; T. Arlen; T. Aune; B. Behera; M. Beilicke; W. Benbow; R. Bird; A. Bouvier; J. H. Buckley; V. Bugaev; K. Byrum; A. Cesarini; L. Ciupik; M. P. Connolly; W. Cui; M. Errando; A. Falcone; S. Federici; Q. Feng; J. P. Finley; L. Fortson; A. Furniss; N. Galante; D. Gall; G. H. Gillanders; S. Griffin; J. Grube; G. Gyuk; D. Hanna; J. Holder; G. Hughes; T. B. Humensky; P. Kaaret; M. Kertzman; Y. Khassen; D. Kieda; H. Krawczynski; F. Krennrich; S. Kumar; M. J. Lang; A. S. Madhavan; G. Maier; P. Majumdar; S. McArthur; A. McCann; J. Millis; P. Moriarty; R. Mukherjee; A. O'Faolain de Bhroithe; R. A. Ong; A. N. Otte; N. Park; J. S. Perkins; M. Pohl; A. Popkow; H. Prokoph; J. Quinn; K. Ragan; L. C. Reyes; P. T. Reynolds; G. T. Richards; E. Roache; D. B. Saxon; G. H. Sembroski; A. W. Smith; D. Staszak; I. Telezhinsky; M. Theiling; A. Varlotta; V. V. Vassiliev; S. Vincent; S. P. Wakely; T. C. Weekes; A. Weinstein; R. Welsing; D. A. Williams; B. Zitzer; M. Boettcher; S. J. Fegan; P. Fortin; J. P. Halpern; Y. Y. Kovalev; M. L. Lister; J. Liu; A. B. Pushkarev; P. S. Smith; VERITAS Collaboration

doi:10.1088/0004-637X/776/2/69

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DISCOVERY OF A NEW TeV GAMMA-RAY SOURCE: VER J0521+211

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DISCOVERY OF A NEW TeV GAMMA-RAY SOURCE: VER J0521+211

S. Archambault, T. Arlen, T. Aune, B. Behera, M. Beilicke, W. Benbow, R. Bird, A. Bouvier, J. H. Buckley, V. Bugaev, …

The Astrophysical journal, v 776(2), pp 1-10

20 Oct 2013

DOI: https://doi.org/10.1088/0004-637X/776/2/69

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Abstract

Astronomy & Astrophysics

Physical Sciences

Science & Technology

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)) x 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 similar 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.

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36 citations in Scopus

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Title: DISCOVERY OF A NEW TeV GAMMA-RAY SOURCE: VER J0521+211
Creators: S. Archambault - McGill University
T. Arlen - University of California, Los Angeles
T. Aune - University of California, Los Angeles
B. Behera - DESY, D-15738 Zeuthen, Germany
M. Beilicke - Washington University in St. Louis
W. Benbow - Harvard University
R. Bird - University College Dublin
A. Bouvier - University of California, Santa Cruz
J. H. Buckley - Washington University in St. Louis
V. Bugaev - Washington University in St. Louis
K. Byrum - Argonne National Laboratory
A. Cesarini - National University of Ireland, Galway
L. Ciupik - Adler Planetarium
M. P. Connolly - National University of Ireland, Galway
W. Cui - Purdue University West Lafayette
M. Errando - Columbia University
A. Falcone - Pennsylvania State University
S. Federici - University of Potsdam
Q. Feng - Purdue University West Lafayette
J. P. Finley - Purdue University West Lafayette
L. Fortson - University of Minnesota
A. Furniss - University of California, Santa Cruz
N. Galante - Harvard University
D. Gall - University of Iowa
G. H. Gillanders - National University of Ireland, Galway
S. Griffin - McGill University
J. Grube - Adler Planetarium
G. Gyuk - Adler Planetarium
D. Hanna - McGill University
J. Holder - University of Delaware
G. Hughes - DESY, D-15738 Zeuthen, Germany
T. B. Humensky - Columbia University
P. Kaaret - University of Iowa
M. Kertzman - DePauw University
Y. Khassen - University College Dublin
D. Kieda - University of Utah
H. Krawczynski - DESY, D-15738 Zeuthen, Germany
F. Krennrich - Iowa State University
S. Kumar - University of Delaware
M. J. Lang - National University of Ireland, Galway
A. S. Madhavan - Iowa State University
G. Maier - DESY, D-15738 Zeuthen, Germany
P. Majumdar - Saha Institute of Nuclear Physics
S. McArthur - University of Chicago
A. McCann - University of Chicago
J. Millis - Anderson University - South Carolina
P. Moriarty - Galway-Mayo Institute of Technology
R. Mukherjee - Columbia University
A. O'Faolain de Bhroithe - University College Dublin
R. A. Ong - University of California, Los Angeles
A. N. Otte - Georgia Institute of Technology
N. Park - University of Chicago
J. S. Perkins - Goddard Space Flight Center
M. Pohl - University of Potsdam
A. Popkow - University of California, Los Angeles
H. Prokoph - DESY, D-15738 Zeuthen, Germany
J. Quinn - University College Dublin
K. Ragan - McGill University
L. C. Reyes - California Polytechnic State University
P. T. Reynolds - Cork Institute of Technology
G. T. Richards - Georgia Institute of Technology
E. Roache - Harvard University
D. B. Saxon - University of Delaware
G. H. Sembroski - Purdue University West Lafayette
A. W. Smith - University of Utah
D. Staszak - McGill University
I. Telezhinsky - University of Potsdam
M. Theiling - Purdue University West Lafayette
A. Varlotta - Purdue University West Lafayette
V. V. Vassiliev - University of California, Los Angeles
S. Vincent - DESY, D-15738 Zeuthen, Germany
S. P. Wakely - University of Chicago
T. C. Weekes - Harvard University
A. Weinstein - Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA
R. Welsing - DESY, D-15738 Zeuthen, Germany
D. A. Williams - University of California, Santa Cruz
B. Zitzer - Argonne National Laboratory
M. Boettcher - North West Univ, Ctr Space Res, ZA-2531 Potchefstroom, South Africa
S. J. Fegan - École Polytechnique
P. Fortin - Harvard University
J. P. Halpern - Columbia University
Y. Y. Kovalev - Max Planck Inst Radioastron, D-53121 Bonn, Germany
M. L. Lister - Purdue University West Lafayette
J. Liu - Columbia University
A. B. Pushkarev - Pulkovo Astron Observ, St Petersburg 196140, Russia
P. S. Smith - University of Arizona
VERITAS Collaboration
Publication Details: The Astrophysical journal, v 776(2), pp 1-10
Publisher: Iop Publishing Ltd
Number of pages: 10
Grant note: STFC in the UK; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) NNX10AP66G; NNX12AJ30G; NNX10AF89G / NASA; National Aeronautics & Space Administration (NASA) NSERC in Canada; Natural Sciences and Engineering Research Council of Canada (NSERC) CNES in France SFI 10/RFP/AST2748 / Science Foundation Ireland; European Commission 1206534 / Direct For Mathematical & Physical Scien; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS) Dynasty Foundation NNX08AV67G; 11-Fermi11-0019; NNX09AU10G / NASA-Fermi; National Aeronautics & Space Administration (NASA) 64789 / South African Department of Science and Technology through the National Research Foundation under NRF SARChI Chair 11-02-00368; 12-02-33101 / Russian Foundation for Basic Research; Russian Foundation for Basic Research (RFBR) U.S. Department of Energy Office of Science; United States Department of Energy (DOE) Russian Academy of Sciences Smithsonian Institution U.S. National Science Foundation; National Science Foundation (NSF) INAF in Italy; Istituto Nazionale Astrofisica (INAF) 0970134 / Division Of Physics; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS)
Resource Type: Journal article
Language: English
Academic Unit: Physics
Web of Science ID: WOS:000327216100006
Scopus ID: 2-s2.0-84886083660
Other Identifier: 991019201500004721

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Collaboration types: Domestic collaboration; International collaboration
Web of Science research areas: Astronomy & Astrophysics

DISCOVERY OF A NEW TeV GAMMA-RAY SOURCE: VER J0521+211

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