Rapid response and short time latency are very important for Time Domain Astronomy, such as the observations of Gamma-ray Bursts (GRBs) and electromagnetic (EM) counterparts of gravitational waves (GWs). Based on the near real-time Fermi/GBM data, we developed a low-latency pipeline to automatically calculate the temporal and spectral properties of GRBs. With this pipeline, some important parameters can be obtained, such as T90 and fluence, within ~20 minutes after the GRB trigger. For ~90% GRBs, T90 and fluence are consistent with the GBM catalog results within 2 sigma errors. This pipeline has been used by the Gamma-ray Bursts Polarimeter (POLAR) and the Insight Hard X-ray Modulation Telescope (Insight-HXMT) to follow up the bursts of interest. For GRB 170817A, the first EM counterpart of GW events detected by Fermi/GBM and INTEGRAL/SPI-ACS, the pipeline gave T90 and spectral information in 21 minutes after the GBM trigger, providing important information for POLAR and Insight-HXMT observations.
@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}
}
Comments
14 pages, 8 figures. The paper has been accepted by Research in Astronomy and Astrophysics (RAA)