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- W2109131429 abstract "We report on VERITAS observations of the BL Lac object B2 1215+30 between 2008 and 2012. During this period, the source was detected at very high energies (VHE; E > 100 GeV) by VERITAS with a significance of $8.9sigma$ and showed clear variability on time scales larger than months. In 2011, the source was found to be in a relatively bright state and a power-law fit to the differential photon spectrum yields a spectral index of $3.6 pm 0.4_{mathrm{stat}} pm 0.3_{mathrm{syst}}$ with an integral flux above 200 GeV of $(8.0 pm 0.9_{mathrm{stat}} pm 3.2_{mathrm{syst}}) times 10^{-12}, mathrm{cm}^{-2} mathrm{s}^{-1}$. No short term variability could be detected during the bright state in 2011. Multi-wavelength data were obtained contemporaneous with the VERITAS observations in 2011 and cover optical (Super-LOTIS, MDM, Swift-UVOT), X-ray (Swift-XRT), and gamma-ray (Fermi-LAT) frequencies. These were used to construct the spectral energy distribution (SED) of B2 1215+30. A one-zone leptonic model is used to model the blazar emission and the results are compared to those of MAGIC from early 2011 and other VERITAS-detected blazars. The SED can be well reproduced with model parameters typical for VHE-detected BL Lacs." @default.
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- W2109131429 date "2013-11-26" @default.
- W2109131429 modified "2023-10-18" @default.
- W2109131429 title "LONG TERM OBSERVATIONS OF B2 1215+30 WITH VERITAS" @default.
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