解密 blazar OJ 287 2017 年喷发的多波段研究
高能天体物理现象
2024-08-28 v3 星系天体物理
摘要
2017 年 2 月，blazar OJ~287 经历了一段强烈的多波段活动。它在软 X 射线 (0.3-10 keV) 波段达到了历史性峰值，由 Swift-XRT 测量得出。这一事件与一次非常高能 (VHE) -射线喷发一致，导致 VERITAS 在 2016 年 12 月 9 日至 2017 年 3 月 31 日期间检测到能量超过 100 GeV 的辐射，检测显著性为 。软 X 射线和 VHE 波段的时均 VHE -射线谱与软幂律 () 和对应于同一能量下约为 2.4% 蛱蝶星云的积分通量相符。多个仪器在电磁谱的不同波段获取的同步数据揭示了复杂的喷发行为，主要集中在软 X 射线和 VHE 波段。为调查此类事件的可能来源，我们的研究聚焦于三个不同的活动状态：喷发前、喷发期间和喷发后。这些时期的谱能分布 suggest 至少存在两个非热发射区，其中较小的发射区负责观察到的喷发。宽带建模结果和 2017 年观察到的 OJ~287 新射电节点数据与喷发源自射电核心外部的强回收冲击相符。
引用
@article{arxiv.2407.11848,
title = {A multi-wavelength study to decipher the 2017 flare of the blazar OJ 287},
author = {A. Acharyya and C. B. Adams and A. Archer and P. Bangale and J. T. Bartkoske and P. Batista and W. Benbow and A. Brill and J. P. Caldwell and M. Carini and J. L. Christiansen and A. J. Chromey and M. Errando and A. Falcone and Q. Feng and J. P. Finley and J. Foote and L. Fortson and A. Furniss and G. Gallagher and W. Hanlon and D. Hanna and O. Hervet and C. E. Hinrichs and J. Hoang and J. Holder and T. B. Humensky and W. Jin and M. N. Johnson and P. Kaaret and M. Kertzman and M. Kherlakian and D. Kieda and T. K. Kleiner and N. Korzoun and F. Krennrich and S. Kumar and M. J. Lang and M. Lundy and G. Maier and C. EMcGrath and M. J. Millard and J. Millis and C. L. Mooney and P. Moriarty and R. Mukherjee and S. O'Brien and R. A. Ong and M. Pohl and E. Pueschel and J. Quinn and P. L. Rabinowitz and K. Ragan and P. T. Reynolds and D. Ribeiro and E. Roache and J. L. Ryan and I. Sadeh and A. C. Sadun and L. Saha and M. Santander and G. H. Sembroski and K. Shahinyan and R. Shang and M. Splettstoesser and D. Tak and A. K. Talluri and J. V. Tucci and D. A. Williams and S. L. Wong and S. G. Jorstad and R. Lico and P. Lusen and A. P. Marscher},
journal= {arXiv preprint arXiv:2407.11848},
year = {2024}
}
备注
21 pages, 7 figures, accepted for publication in The Astrophysical Journal