The GECAM Real-Time Burst Alert System
Yue Huang, Dongli Shi, Xiaolu Zhang, Xiang Ma, Peng Zhang, Shijie, Zheng, Liming Song, Xiaoyun Zhao, Wei Chen, Rui Qiao, Xinying Song, Jin Wang,, Ce Cai, Shuo Xiao, Yanqiu Zhang, Shaolin Xiong
TL;DR
The GECAM real-time burst alert system rapidly detects gamma-ray bursts associated with gravitational waves, enabling timely follow-up observations through a satellite network and BeiDou-3 communication.
Contribution
This paper introduces GECAM's real-time alert system, integrating BeiDou-3 communication for rapid detection and alert distribution of gamma-ray bursts.
Findings
42 GRBs triggered GECAM in the first year
Alert distribution within approximately 1 minute
System effectively enables timely follow-up observations
Abstract
Gravitational Wave High-energy Electromagnetic Counterpart All-sky Monitor (GECAM), consisting of two micro-satellites, is designed to detect gamma-ray bursts associated with gravitational-wave events. Here, we introduce the real-time burst alert system of GECAM, with the adoption of the BeiDou-3 short message communication service. We present the post-trigger operations, the detailed ground-based analysis, and the performance of the system. In the first year of the in-flight operation, GECAM was triggered by 42 GRBs. GECAM real-time burst alert system has the ability to distribute the alert within 1 minute after being triggered, which enables timely follow-up observations.
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Taxonomy
TopicsGamma-ray bursts and supernovae · Earthquake Detection and Analysis · Pulsars and Gravitational Waves Research