基于VERITAS切伦科夫望远镜五年耀变体观测的上限
高能天体物理现象
2016-05-25 v1
摘要
在 VERITAS 切伦科夫望远镜阵列 2007 年全面科学运行开始至 2012 年期间，其观测了超过 130 个耀变体；其中 26 个被探测为甚高能 (VHE; E>100 GeV) {\gamma}-射线源。本工作中，我们呈现了 114 个未探测到天体的样本的分析结果。这些观测构成总计约 570 小时的有效时间。该样本包含若干未证认的费米-大面积望远镜 (LAT) 源（位于高银纬）以及费米-LAT 第二目录中全部位于 VERITAS 观测视场内的源。我们还进行了光学光谱测量，以估算其中一些没有光谱距离估计的耀变体的红移。我们呈现了来自利克天文台谢恩望远镜上 Kast 仪器的 18 个纳入本工作的耀变体的新光学光谱，这使得其中 4 个的红移得以成功测量或限制。对于我们样本中的每个耀变体，我们提供了 VERITAS 能段中的流量上限。我们还研究了显著性分布的性质，并呈现了该数据集堆叠分析的结果，显示有 4 {\sigma} 超出。
引用
@article{arxiv.1603.02410,
title = {Upper limits from five years of blazar observations with the VERITAS Cherenkov telescopes},
author = {S. Archambault and A. Archer and W. Benbow and R. Bird and J. Biteau and M. Buchovecky and J. H. Buckley and V. Bugaev and K. Byrum and M. Cerruti and X. Chen and L. Ciupik and M. P. Connolly and W. Cui and J. D. Eisch and M. Errando and A. Falcone and Q. Feng and J. P. Finley and H. Fleischhack and P. Fortin and L. Fortson and A. Furniss and G. H. Gillanders and S. Griffin and J. Grube and G. Gyuk and M. Hütten and N. Hakansson and D. Hanna and J. Holder and T. B. Humensky and C. A. Johnson and P. Kaaret and P. Kar and N. Kelley-Hoskins and M. Kertzman and D. Kieda and M. Krause and F. Krennrich and S. Kumar and M. J. Lang and G. Maier and S. McArthur and A. McCann and K. Meagher and P. Moriarty and R. Mukherjee and T. Nguyen and D. Nieto and A. O'Faoláin De Bhróithe and R. A. Ong and A. N. Otte and N. Park and J. S. Perkins and A. Pichel and M. Pohl and A. Popkow and E. Pueschel and J. Quinn and K. Ragan and P. T. Reynolds and G. T. Richards and E. Roache and A. C. Rovero and M. Santander and G. H. Sembroski and K. Shahinyan and A. W. Smith and D. Staszak and I. Telezhinsky and J. V. Tucci and J. Tyler and S. Vincent and S. P. Wakely and O. M. Weiner and A. Weinstein and D. A. Williams and B. Zitzer and M. Fumagalli and J. X. Prochaska},
journal= {arXiv preprint arXiv:1603.02410},
year = {2016}
}
备注
22 pages; accepted for publication in The Astronomical Journal