来自双星 LS I +61$^\circ$ 303 的异常明亮 TeV 耀发
高能天体物理现象
2016-02-03 v1
摘要
TeV双星系统LS I +61 303以其规律的、非热辐射模式而闻名，该模式追踪了致密天体绕其B0 Ve恒星伴星26.5天轨道的周期。该系统通常在远星点经过前后表现出升高的TeV发射，通量水平为蟹状星云稳态通量(>300 GeV)的5%至15%。本文展示了VERITAS在2014年底对LS I +61 303的观测，期间探测到远星点附近明亮的TeV耀发，通量峰值超过蟹状星云通量的30%。这是该源在TeV波段观测到的最明亮此类活动。强爆发上升和下降时间小于一天。耀发的短时间尺度，结合耀发期间从LS I +61 303观测到的10 TeV光子，对该源中加速器的性质给出了约束。
引用
@article{arxiv.1601.01812,
title = {Exceptionally bright TeV flares from the binary LS I +61$^\circ$ 303},
author = {VERITAS Collaboration and S. Archambault and A. Archer and T. Aune and A. Barnacka and W. Benbow and R. Bird and M. Buchovecky and J. H. Buckley and V. Bugaev and K. Byrum and J. V. Cardenzana and M. Cerruti and X. Chen and L. Ciupik and E. Collins-Hughes and M. P. Connolly and W. Cui and H. J. Dickinson and J. Dumm and J. D. Eisch and A. Falcone and Q. Feng and J. P. Finley and H. Fleischhack and A. Flinders and P. Fortin and L. Fortson and A. Furniss and G. H. Gillanders and S. Griffin and J. Grube and G. Gyuk and M. Huetten 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 Y. Khassen 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 J. Millis and P. Moriarty and R. Mukherjee and D. Nieto and S. O'Brien and A. O'Faolain de Bhroithe and R. A. Ong and A. N. Otte and D. Pandel and N. Park and V. Pelassa 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 J. Rousselle and C. Rulten 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 A. Wilhelm and D. A. Williams and B. Zitzer},
journal= {arXiv preprint arXiv:1601.01812},
year = {2016}
}
备注
9 pages, 2 figures. Accepted for publication by ApJL