利用 HAWC 对 SS 433 甚高能伽马射线的能谱研究
高能天体物理现象
2024-11-20 v1
摘要
在高海拔水切伦科夫（HAWC）观测站的数据中，观测到了来自微类星体 SS 433 双瓣的甚高能（0.1-100 TeV）伽马射线辐射，这使其成为首个在 TeV 能段被分辨出的天体物理喷流。本工作利用 HAWC 观测站 2,565 天的数据更新了对 SS 433 的分析。我们的分析报告在东部瓣探测到一个点状源，显著性为 ，在西部瓣探测到一个点状源，显著性为 。对于每个喷流瓣，我们定位了伽马射线辐射并确定了最佳拟合位置。这些位置分别靠近东部和西部瓣的 X 射线辐射点“e1”和“w1”。我们分析了谱能量分布，发现两个瓣的能谱均符合简单幂律 ，东瓣和西瓣的谱指数分别为 和 。来自东瓣和西瓣的光子最高能量分别达到 56 TeV 和 123 TeV。我们将观测结果与多种模型进行比较，得出结论：该高能伽马射线辐射可由一群被有效加速的电子产生。
引用
@article{arxiv.2410.21796,
title = {Spectral study of very high energy gamma rays from SS 433 with HAWC},
author = {R. Alfaro and C. Alvarez and J. C. Arteaga-Velázquez and D. Avila Rojas and H. A. Ayala Solares and R. Babu and E. Belmont-Moreno and K. S. Caballero-Mora and T. Capistrán and A. Carramiñana and S. Casanova and J. Cotzomi and E. De la Fuente and D. Depaoli and N. Di Lalla and R. Diaz Hernandez and B. L . Dingus and M. A. DuVernois and K. Engel and T. Ergin and C . Espinoza and K. L. Fan and K. Fang and N. Fraija and S. Fraija and J. A. García-González and A. González Muñoz and M. M. González and J. A. Goodman and S. Groetsch and J. P. Harding and S. Hernández-Cadena and I. Herzog and D. Huang and F. Hueyotl-Zahuantitla and P. Hüntemeyer and A. Iriarte and S. Kaufmann and A . Lara and W. H. Lee and J. Lee and C. de León and H. León Vargas and A. L. Longinotti and G. Luis-Raya and K. Malone and J. Martínez-Castro and J. A. Matthews and P. Miranda-Romagnoli and J. A. Montes and E. Moreno and M. Mostafá and L. Nellen and M. U . Nisa and R . Noriega-Papaqui and Y. Pérez Araujo and E. G. Pérez-Pérez and C. D. Rho and D. Rosa-González and E . Ruiz-Velasco and H. Salazar and A. Sandoval and M. Schneider and J. Serna-Franco and A. J. Smith and Y. Son and R. W . Springer and O. Tibolla and K. Tollefson and I. Torres and R. Torres-Escobedo and R. Turner and F. Ureña-Mena and E . Varela and L. Villaseñor and X. Wang and Z. Wang and I. J. Watson and S . Yu and S. Yun-Cárcamo and H. Zhou},
journal= {arXiv preprint arXiv:2410.21796},
year = {2024}
}