Mrk 421 在 2006–2008 年间的 TeV 与多波段观测
高能天体物理现象
2011-08-12 v2
摘要
我们报告了利用 VERITAS 天文台和 Whipple 10 米切伦科夫望远镜对耀变体 Mrk 421（红移 0.031）进行的 TeV γ 射线观测。VERITAS 出色的灵敏度使我们能够以前所未有的精度对 TeV γ 射线流量和能谱进行采样，在每次指向观测中均探测到 Mrk 421。2006 年 1 月至 2008 年 6 月期间，共获取了 47.3 小时的 VERITAS 数据和 96 小时的 Whipple 10 米望远镜数据。我们展示了对 TeV γ 射线能谱随时间及不同流量水平变化的研究结果。2008 年 5 月 2 日和 3 日，探测到明亮的 TeV γ 射线耀发，流量达到 10 个蟹状星云单位（Crab）的水平。TeV γ 射线数据得到了射电、光学和 X 射线观测的补充，发现除射电波段外，所有波段均存在流量变化。RXTE 和 Swift X 射线数据的结合揭示了能谱随流量水平增加而硬化的现象，这通常与源在 TeV γ 射线波段的活动增强相关。我们为 18 个夜晚生成了准同时的谱能量分布，每个分布均可由一个单区同步自康普顿（SSC）模型合理描述。
引用
@article{arxiv.1106.1210,
title = {TeV and Multi-wavelength Observations of Mrk 421 in 2006-2008},
author = {V. A. Acciari and E. Aliu and T. Arlen and T. Aune and M. Beilicke and W. Benbow and D. Boltuch and S. M. Bradbury and J. H. Buckley and V. Bugaev and K. Byrum and A. Cannon and A. Cesarini and L. Ciupik and W. Cui and R. Dickherber and C. Duke and A. Falcone and J. P. Finley and G. Finnegan and L. Fortson and A. Furniss and N. Galante and D. Gall and G. H. Gillanders and S. Godambe and J. Grube and R. Guenette and G. Gyuk and D. Hanna and J. Holder and C. M. Hui and T. B. Humensky and A. Imran and P. Kaaret and N. Karlsson and M. Kertzman and D. Kieda and A. Konopelko and H. Krawczynski and F. Krennrich and M. J. Lang and G. Maier and S. McArthur and M. McCutcheon and P. Moriarty and R. A. Ong and A. N. Otte and M. Ouellette and D. Pandel and J. S. Perkins and A. Pichel and M. Pohl and J. Quinn and K. Ragan and L. C. Reyes and P. T. Reynolds and E. Roache and H. J. Rose and A. C. Rovero and M. Schroedter and G. H. Sembroski and G. Demet Senturk and D. Steele and S. P. Swordy and M. Theiling and S. Thibadeau and A. Varlotta and V. V. Vassiliev and S. Vincent and R. G. Wagner and S. P. Wakely and J. E. Ward and T. C. Weekes and A. Weinstein and T. Weisgarber and D. A. Williams and S. Wissel and M. Wood and B. Zitzer and A. Garson and K. Lee and A. C. Sadun and M. Carini and D. Barnaby and K. Cook and J. Maune and A. Pease and S. Smith and R. Walters and A. Berdyugin and E. Lindfors and K. Nilsson and M. Pasanen and J. Sainio and A. Sillanpaa and L. O. Takalo and C. Villforth and T. Montaruli and M. Baker and A. Lahteenmaki and M. Tornikoski and T. Hovatta and E. Nieppola and H. D. Aller and M. F. Aller},
journal= {arXiv preprint arXiv:1106.1210},
year = {2011}
}
备注
30 pages, 12 figures, accepted by ApJ