VERITAS 对六个明亮硬谱 Fermi-LAT 耀变体的观测
高能天体物理现象
2015-06-11 v1
摘要
我们报告了 VERITAS 对从费米大视场望远镜第一源表 (1FGL) 中选出的六个耀变体的甚高能 (VHE; E>100 GeV) 观测结果。考虑到河外背景光对伽马射线的吸收，我们将 1FGL 源的伽马射线辐射外推至 VHE 波段。这使得我们能够选出六个明亮的硬谱耀变体，它们是良好的 TeV 辐射候选体。我们尝试使用 Keck 望远镜对那些缺乏斯隆数字巡天 (SDSS) 光谱数据的目标进行光谱红移测量。在对本文所述的六个源进行观测期间，未检测到 VHE 辐射。我们给出了相应的 TeV 上限，以及同期的 Fermi 观测数据和非同时的 Swift UVOT 与 XRT 数据。我们组装并建模了这些耀变体的宽带光谱能量分布 (SEDs)，采用的是单区同步自康普顿模型。为这六个耀变体构建的 SED 显示，其同步辐射峰值位于中间谱峰和高谱峰分类的边界处，其中四个耀变体的辐射区域由粒子主导。
引用
@article{arxiv.1210.7224,
title = {VERITAS Observations of Six Bright, Hard-Spectrum Fermi-LAT Blazars},
author = {E. Aliu and S. Archambault and T. Arlen and T. Aune and M. Beilicke and W. Benbow and M. Bottcher and A. Bouvier and J. H. Buckley and V. Bugaev and A. Cesarini and L. Ciupik and E. Collins-Hughes and M. P. Connolly and W. Cui and R. Dickherber and C. Duke and J. Dumm and M. Errando and A. Falcone and S. Federici and Q. Feng and J. P. Finley and G. Finnegan and L. Fortson and A. Furniss and N. Galante and D. Gall and S. Godambe and S. Griffin and J. Grube and G. Gyuk and D. Hanna and J. Holder and H. Huan and P. Kaaret and N. Karlsson and Y. Khassen and D. Kieda and H. Krawczynski and F. Krennrich and K. Lee and A. S Madhavan and G. Maier and P. Majumdar and S. McArthur and A. McCann and P. Moriarty and R. Mukherjee and T. Nelson and A. O'Faolain de Bhroithe and R. A. Ong and M. Orr and A. N. Otte and N. Park and J. S. Perkins and A. Pichel and M. Pohl and H. Prokoph and J. Quinn and K. Ragan and L. C. Reyes and P. T. Reynolds and E. Roache and D. B. Saxon and G. H. Sembroski and D. Staszak and I. Telezhinsky and G. Tesic and M. Theiling and S. Thibadeau and K. Tsurusaki and A. Varlotta and V. V. Vassiliev and S. Vincent and M. Vivier and S. P. Wakely and T. C. Weekes and A. Weinstein and R. Welsing and D. A. Williams and B. Zitzer and P. Fortin and D. Horan and M. Fumagalli and K. Kaplan and J. X. Prochaska},
journal= {arXiv preprint arXiv:1210.7224},
year = {2015}
}