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arXiv · 2307.04999

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
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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 $\sim$1 minute after being triggered, which enables timely follow-up observations.

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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. 2023-07-11. The GECAM Real-Time Burst Alert System. https://arxiv.org/abs/2307.04999

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