Peer-Reviewed Journal Details
Mandatory Fields
Archambault, S,Arlen, T,Aune, T,Behera, B,Beilicke, M,Benbow, W,Bird, R,Bouvier, A,Buckley, JH,Bugaev, V,Byrum, K,Cesarini, A,Ciupik, L,Connolly, MP,Cui, W,Errando, M,Falcone, A,Federici, S,Feng, Q,Finley, JP,Fortson, L,Furniss, A,Galante, N,Gall, D,Gillanders, GH,Griffin, S,Grube, J,Gyuk, G,Hanna, D,Holder, J,Hughes, G,Humensky, TB,Kaaret, P,Kertzman, M,Khassen, Y,Kieda, D,Krawczynski, H,Krennrich, F,Kumar, S,Lang, MJ,Madhavan, AS,Maier, G,Majumdar, P,McArthur, S,McCann, A,Millis, J,Moriarty, P,Mukherjee, R,de Bhroithe, AO,Ong, RA,Otte, AN,Park, N,Perkins, JS,Pohl, M,Popkow, A,Prokoph, H,Quinn, J,Ragan, K,Reyes, LC,Reynolds, PT,Richards, GT,Roache, E,Saxon, DB,Sembroski, GH,Smith, AW,Staszak, D,Telezhinsky, I,Theiling, M,Varlotta, A,Vassiliev, VV,Vincent, S,Wakely, SP,Weekes, TC,Weinstei
2013
October
Astrophysical Journal
DISCOVERY OF A NEW TeV GAMMA-RAY SOURCE: VER J0521+211
Published
()
Optional Fields
BL Lacertae objects: individual (VER J0521+211) gamma rays: galaxies ACTIVE GALACTIC NUCLEI LARGE-AREA TELESCOPE EXTRAGALACTIC BACKGROUND LIGHT ALL-SKY SURVEY HIGH-ENERGY EMISSION MULTIWAVELENGTH OBSERVATIONS SOURCE CATALOG BL-LAC LINEAR-POLARIZATION DETECTED BLAZARS
776
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.
ARTN 69
Grant Details
Publication Themes