中文

基于 Fermi/GBM 近实时数据的伽马射线暴光变曲线与能谱低延迟管线

天体物理仪器与方法 2018-05-23 v1 高能天体物理现象

摘要

快速响应与短时延对于时域天文学(如伽马射线暴(GRBs)与引力波(GWs)电磁(EM)对应体的观测)十分重要。基于 Fermi/GBM 近实时数据,我们开发了一条低延迟管线,用于自动计算 GRBs 的时变与能谱性质。借助该管线,一些重要参数(如 T90 与流强)可在 GRB 触发后约 20 分钟内获得。对于约 90% 的 GRBs,T90 与流强在 2 倍 sigma 误差内与 GBM 星表结果一致。该管线已被伽马射线暴偏振仪(POLAR)与慧眼硬 X 射线调制望远镜(Insight-HXMT)用于跟进感兴趣暴。对于 GRB 170817A——由 Fermi/GBM 与 INTEGRAL/SPI-ACS 探测到的首个 GW 事件 EM 对应体——该管线在 GBM 触发后 21 分钟给出了 T90 与能谱信息,为 POLAR 与 Insight-HXMT 观测提供了重要信息。

关键词

引用

@article{arxiv.1802.09271,
  title  = {A Low-latency Pipeline for GRB Light Curve and Spectrum using Fermi/GBM Near Real-time Data},
  author = {Yi Zhao and Binbin Zhang and Shaolin Xiong and Xi Long and Qiang Zhang and Liming Song and Jianchao Sun and Yuanhao Wang and Hancheng Li and Qingcui Bu and Minzi Feng and Zhengheng Li and Xing Wen and Bobing Wu and Laiyu Zhang and Yongjie Zhang and Shuangnan Zhang and Jianxiong Shao},
  journal= {arXiv preprint arXiv:1802.09271},
  year   = {2018}
}

备注

14 pages, 8 figures. The paper has been accepted by Research in Astronomy and Astrophysics (RAA)