Overview of Gravitational-wave High-energy Electromagnetic Counterpart All-sky Monitor Observations from 2024 to 2026

XIONG Shaolin

doi:10.11728/cjss2026.04.2026-yg19

Overview of Gravitational-wave High-energy Electromagnetic Counterpart All-sky Monitor Observations from 2024 to 2026

doi: 10.11728/cjss2026.04.2026-yg19 cstr: 32142.14.cjss.2026-yg19

XIONG Shaolin

State Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049

Funds: Funded by the National Natural Science Foundation of China (12273042)

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Author Bio:
XOING Shaolin Male, born in Feb. 1983 in Fengcheng city of Jiangxi Province, China. Currently working in the Institute of High Energy Physics, Chinese Academy of Sciences as researcher (professor). Proposed the GECAM mission as the Principal Investigator. Participated in other high-energy space telescopes including Insight-HXMT, POLAR, SVOM, POLAR2, eXTP, etc. Research interests include high energy astrophysics (e.g. GRB, GW, SGR, FRB) and high energy phenomena of from the Sun to the Earth (e.g. SFL, TGF, TEB), in terms of instrumentation, observation, data analysis and physical interpretation. E-mail: xiongsl@ihep.ac.cn

摘要

Abstract: During the past two years, the Gravitational-wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM) has developed into a multi-instrument constellation, including GECAM-A/B, GECAM-C, and GECAM-D, for monitoring high-energy transients over a broad energy range from about 10 keV to 5 MeV. GECAM observations have produced important results on gamma-ray bursts, compact binary mergers, magnetar X-ray bursts, high-energy counterparts of fast X-ray transients, and terrestrial high-energy events. This review summarizes highlight of GECAM results published from 2024 to 2026, emphasizing observations of GRB 221009A, GRB 230307A, and the prolific Galactic magnetar SGR J1935+2154. These observations demonstrate the important role of GECAM as a high-time-resolution, all-sky gamma-ray monitor in time-domain multi-messenger astronomy and space science.
- GECAM /
- Gamma-ray bursts /
- Magnetars /
- Fast radio bursts /
- High-energy transients

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Figure 1. MeV emission lines found in GRB 221009 A by jointly analyzing the GECAM-C and Fermi/GBM data^[6]

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