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29 March 2024
 
  » arxiv » 1802.9271

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A Low-latency Pipeline for GRB Light Curve and Spectrum using Fermi/GBM Near Real-time Data
Yi Zhao ; Binbin Zhang ; Shaolin Xiong ; Xi Long ; Qiang Zhang ; Liming Song ; Jianchao Sun ; Yuanhao Wang ; Hancheng Li ; Qingcui Bu ; Minzi Feng ; Zhengheng Li ; Xing Wen ; Bobing Wu ; Laiyu Zhang ; Yongjie Zhang ; Shuangnan Zhang ; Jianxiong Shao ;
Date 26 Feb 2018
AbstractRapid 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.
Source arXiv, 1802.9271
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