First Gamma-Ray Burst Observations with SVOM
Frédéric Daigne Damien Turpin Jean-Luc Atteia Jesse T. Palmerio Li-Ping Xin Susanna D. Vergani Bing Zhang Chao Wu Tais Maiolino Benjamin Schneider Donghua Zhao An Li Daniele Malesani Hua Li Li Andrea Saccardi Maria-Grazia Bernardini He Gao Frédéric Piron Olivier Godet Bin-Bin Zhang Yun Wang Liangjun Chen Bertrand Cordier Jian-Yan Wei Stéphane Basa Arnaud Claret Alexis Coleiro Jin-Song Deng Yong-Wei Dong Diego Götz Xu-Hui Han Yu-Lei Qiu Cyril Lachaud En-Wei Liang Jing Wang Shao-Lin Xiong Shuang-Nan Zhang SVOM collaboration
First Gamma-Ray Burst Observations with SVOM
摘要
Following its launch on 2024 June 22, the Space-based multi-band Variable Objects Monitor (SVOM) successfully completed its flight acceptance, commissioning, and scientific validation phases in early 2025, during which several tens of gamma-ray bursts (GRBs) were detected onboard. Three quarters of these events have also been detected by other satellites, and a quarter are SVOM-only GRBs. In this article, we describe these early GRB observations, with a first description of the SVOM GRB sample that is emerging, and of the level of characterization already achieved, and with a focus on a few events of particular interest. These early results are very encouraging regarding SVOM’s ability to detect and fully characterize (including prompt emission, afterglow and distance) a wide range of GRBs (classical long GRBs, short GRBs, X-Ray flashes, etc.) and to enable the use of these extreme high-energy transients as probes of the distant Universe.