2015年爆发期间微类星体 V404 Cygni 的 MAGIC 观测
高能天体物理现象
2020-01-30 v1
摘要
微类星体 V404 Cygni 在 2015 年 6 月 15-31 日经历了一系列爆发，期间其硬 X 射线（20-40 keV）通量达到约蟹状星云通量的 40 倍。由于该源耀发活动具有非凡意义，开展了多波长观测。MAGIC 望远镜在 INTEGRAL 警报触发下，在 6 月 18-27 日期间对耀发源进行了数个夜晚、超过 10 小时的跟进观测。其中一小时观测与一次巨大的 22 GHz 射电耀发以及 Fermi-LAT 看到的 GeV 能量信号迹象同时进行。MAGIC 观测在所有分析的时间区间内均未显示显著发射。得出的通量上限在 200--1250 GeV 能量范围为 4.8 ph cm s。我们估算了耀发期间的伽马射线不透明度，结合我们的未探测结果，这表明如果甚高能（VHE）发射体位于距致密天体大于 cm 处，则 V404 Cyg 喷流中的加速是低效的。
引用
@article{arxiv.1707.00887,
title = {MAGIC observations of the microquasar V404 Cygni during the 2015 outburst},
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 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 S. Griffiths 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 K. Ishio and Y. Konno and H. Kubo and J. Kushida and D. Kuveždić and D. Lelas and E. Lindfors and S. Lombardi and F. Longo and M. López and C. Maggio and P. Majumdar and M. Makariev 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 M. Minev and R. Mirzoyan and A. Moralejo and V. Moreno and E. Moretti and V. Neustroev and A. Niedzwiecki and M. Nievas Rosillo and K. Nilsson and D. Ninci and K. Nishijima and K. Noda and L. Nogués 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 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 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 A. Treves and G. Vanzo and M. Vazquez Acosta and I. Vovk and J. E. Ward and M. Will and D. Zarić and A. Loh and J. Rodriguez},
journal= {arXiv preprint arXiv:1707.00887},
year = {2020}
}
备注
7 pages, accepted by MNRAS