dc.contributor.author | Archambault, S. | |
dc.contributor.author | Böttcher, M. | |
dc.contributor.author | Arlen, T. | |
dc.contributor.author | Aune, T. | |
dc.contributor.author | Behera, B. | |
dc.date.accessioned | 2015-04-07T12:43:33Z | |
dc.date.available | 2015-04-07T12:43:33Z | |
dc.date.issued | 2013 | |
dc.identifier.citation | Archambault, S. et al. 2013. Discovery of a new TeV gamma-ray source: Ver J0521+211. Astrophysical journal, 776(2): Article no 69. [https://doi.org/10.1088/0004-637X/776/2/69] | en_US |
dc.identifier.issn | 0004-637X | |
dc.identifier.issn | 1538-4357 (Online) | |
dc.identifier.uri | http://hdl.handle.net/10394/13656 | |
dc.identifier.uri | https://doi.org/10.1088/0004-637X/776/2/69 | |
dc.description.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 ± 0.13stat ± 0.78sys) × 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. | en_US |
dc.language.iso | en | en_US |
dc.publisher | IOP Science | en_US |
dc.subject | BL Lacertae objects: individual (VER J0521+211) | en_US |
dc.subject | Gamma rays: galaxies | en_US |
dc.title | Discovery of a new TeV gamma-ray source: Ver J0521+211 | en_US |
dc.type | Article | en_US |
dc.contributor.researchID | 24420530 - Böttcher, Markus | |