VERITAS 对 B2 1215+30 的长期观测
高能天体物理现象
2015-06-17 v1
摘要
我们报告了 VERITAS 在 2008 年至 2012 年间对 BL Lac 天体 B2 1215+30 的观测结果。在此期间，VERITAS 以 的显著性探测到该源在甚高能 (VHE; E > 100 GeV) 波段的辐射，并显示出大于月时间尺度的明显变异性。2011 年，该源处于相对明亮状态，对其微分光子能谱进行幂律拟合得到的谱指数为 ，高于 200 GeV 的积分通量为 。在 2011 年的明亮状态下未探测到短期变异性。2011 年与 VERITAS 观测同时获取了多波段数据，涵盖光学 (Super-LOTIS, MDM, Swift-UVOT)、X 射线 (Swift-XRT) 和伽马射线 (Fermi-LAT) 频段。这些数据被用于构建 B2 1215+30 的谱能量分布 (SED)。我们使用单区轻子模型对耀变体辐射进行建模，并将结果与 MAGIC 在 2011 年初的结果以及其他 VERITAS 探测到的耀变体进行了比较。该 SED 可以通过 VHE 探测到的 BL Lac 天体的典型模型参数得到很好的重现。
引用
@article{arxiv.1310.6498,
title = {Long term observations of B2 1215+30 with VERITAS},
author = {VERITAS collaboration and E. Aliu and S. Archambault and T. Arlen and T. Aune and M. Beilicke and W. Benbow and R. Bird and A. Bouvier and J. H. Buckley and V. Bugaev and A. Cesarini and L. Ciupik and M. P. Connolly and W. Cui and J. Dumm and M. Errando and A. Falcone and S. Federici and Q. Feng and J. P. Finley and P. Fortin and L. Fortson and A. Furniss and N. Galante and L. Gérard and G. H. Gillanders and S. Griffin and J. Grube and G. Gyuk and D. Hanna and J. Holder and G. Hughes and T. B. Humensky and P. Kaaret and M. Kertzman and Y. Khassen and D. Kieda and H. Krawczynski and F. Krennrich and M. J. Lang and A. S Madhavan and G. Maier and P. Majumdar and S. McArthur and A. McCann and P. Moriarty and R. Mukherjee and D. Nieto and A. O'Faoláin de Bhróithe and R. A. Ong and M. Orr and A. N. Otte and N. Park and J. S. Perkins and M. Pohl and A. Popkow and H. Prokoph and J. Quinn and K. Ragan and L. C. Reyes and P. T. Reynolds and G. T. Richards and E. Roache and D. B. Saxon and G. H. Sembroski and C. Skole and A. W. Smith and M. Soares-Furtado and D. Staszak and I. Telezhinsky and G. Tešić and M. Theiling and A. Varlotta and V. V. Vassiliev and S. Vincent and S. P. Wakely and T. C. Weekes and A. Weinstein and R. Welsing and D. A. Williams and B. Zitzer and M. Böttcher and M. Fumagalli and J. Jadhav},
journal= {arXiv preprint arXiv:1310.6498},
year = {2015}
}
备注
34 pages, 5 figures, accepted for publication in ApJ