伽马射线噪活动星系IC 310的首次多波段观测活动
高能天体物理现象
2020-01-09 v1 星系天体物理
摘要
河外甚高能伽马射线天空中富含耀变体。这些是视线方向上以小角度被观测到的具有喷流的活动星系核。迄今为止，仅已知少数以较大角度被观测到的天体能在 100 GeV 以上发射。对这类天体直至最高能量的多波段研究，为活动星系核的粒子与辐射过程提供了新见解。我们报告了对活动星系 IC 310 核心区进行 TeV 探测后的首次多波段观测活动结果，其喷流的观测视角为 10 度至 20 度的中等角度。此次多仪器观测活动于 2012 年 11 月至 2013 年 1 月期间进行，涉及 MAGIC、Fermi、INTEGRAL、Swift、OVRO、MOJAVE 和 EVN 的观测。这些观测由 AllWISE 和 2MASS 星表的档案数据作为补充。我们应用单区同步自康普顿模型来描述其宽波段能谱分布。IC 310 在观测活动初期表现出异常的 TeV 爆发，随后是低但仍可探测的 TeV 流量。与先前的测量相比，在低发射态下其能谱形状被发现更陡。软 X 射线波段的同步观测显示出增强的能流态以及“越亮越硬”的能谱形状行为。在其他频段未发现强相关的流量变化。由这些观测获得的宽波段能谱分布支持了双峰结构的假设。X 射线和甚高能发射中“越亮越硬”的趋势与同步自康普顿场景预期的行为一致。同时期的宽波段能谱分布可以用单区同步自康普顿模型很好地描述，所使用的参数与其他发射伽马射线的错位耀变体中发现的参数相当。
引用
@article{arxiv.1703.07651,
title = {First Multi-wavelength Campaign on the Gamma-ray-loud Active Galaxy IC 310},
author = {M. L. Ahnen and S. Ansoldi and L. A. Antonelli and C. Arcaro and A. Babić and B. Banerjee and P. Bangale and U. Barres de Almeida and J. A. Barrio and J. Becerra González and W. Bednarek and E. Bernardini and A. Berti and B. Biasuzzi and A. Biland and O. Blanch and S. Bonnefoy and G. Bonnoli and F. Borracci and T. Bretz and R. Carosi and A. Carosi and A. Chatterjee and P. Colin and E. Colombo and J. L. Contreras and J. Cortina and S. Covino and P. Cumani and P. Da Vela and F. Dazzi and A. De Angelis and B. De Lotto and E. de Oña Wilhelmi and F. Di Pierro and M. Doert and A. Domínguez and D. Dominis Prester and D. Dorner and M. Doro and S. Einecke and D. Eisenacher Glawion and D. Elsaesser and M. Engelkemeier and V. Fallah Ramazani and A. Fernández-Barral and D. Fidalgo and M. V. Fonseca and L. Font and C. Fruck and D. Galindo and R. J. García López and M. Garczarczyk and M. Gaug and P. Giammaria and N. Godinović and D. Gora and D. Guberman and D. Hadasch and A. Hahn and T. Hassan and M. Hayashida and J. Herrera and J. Hose and D. Hrupec and G. Hughes and W. Idec and K. Ishio and K. Kodani and Y. Konno and H. Kubo and J. Kushida and D. Lelas and E. Lindfors and S. Lombardi and F. Longo and M. López and P. Majumdar and M. Makariev and K. Mallot and G. Maneva and M. Manganaro and K. Mannheim and L. Maraschi and M. Mariotti and M. Martínez and D. Mazin and U. Menzel and R. Mirzoyan and A. Moralejo and E. Moretti and D. Nakajima and V. Neustroev and A. Niedzwiecki and M. Nievas Rosillo and K. Nilsson and K. Nishijima and K. Noda and L. Nogués and M. Nöthe and S. Paiano and J. Palacio and D. Paneque and R. Paoletti and J. M. Paredes and X. Paredes-Fortuny and G. Pedaletti and M. Peresano and L. Perri and M. Persic and J. Poutanen and P. G. Prada Moroni and E. Prandini and I. Puljak and J. R. Garcia and I. Reichardt and W. Rhode and M. Ribó and J. Rico and T. Saito and K. Satalecka and S. Schroeder and T. Schweizer and S. N. Shore and A. Sillanpää and J. Sitarek and I. Šnidarić and D. Sobczynska and A. Stamerra and M. Strzys and T. Surić and L. Takalo and F. Tavecchio and P. Temnikov and T. Terzić and D. Tescaro and M. Teshima and D. F. Torres and N. Torres-Albà and T. Toyama and A. Treves and G. Vanzo and M. Vazquez Acosta and I. Vovk and J. E. Ward and M. Will and M. H. Wu and F. Krauß and R. Schulz and M. Kadler and J. Wilms and E. Ros and U. Bach and T. Beuchert and M. Langejahn and C. Wendel and N. Gehrels and W. H. Baumgartner and C. B. Markwardt and C. Müller and V. Grinberg and T. Hovatta and J. Magill},
journal= {arXiv preprint arXiv:1703.07651},
year = {2020}
}
备注
15 pages, 10 figures. Accepted for publication in A&A