{
  "annotation_id": "e7a0c657-aa2d-44af-a808-7cab2e2254c4",
  "date_created": "2026-02-17T05:53:12.393000Z",
  "date_modified": "2026-02-17T05:53:12.393000Z",
  "file_hash": "141c42e2992473f0b55c729629f963eac0fca2762316519887f1411c20fbd4e3",
  "private": false,
  "record": {
    "abstract": "Flares are usually observed during the afterglow phase of Gamma-Ray Bursts (GRBs) in soft X-ray, optical and radio bands, but rarely in gamma-ray band. Despite the extraordinary brightness, GECAM-C has accurately measured both the bright prompt emission and flare emission of GRB 221009A without instrumental effects, offering a good opportunity to study the relation between them. In this work, we present a comprehensive analysis of flare emission of GRB 221009A, which is composed of a series of flares. Among them, we identify an exceptionally bright flare with a record-breaking isotropic energy $E_{\\rm iso} = 1.82 \\times 10^{53}$ erg of GRB flares. It exhibits the highest peak energy ever detected in GRB flares, $E_{\\rm peak} \\sim 300$ keV, making it a genuine gamma-ray flare. It also shows rapid rise and decay timescales, significantly shorter than those of typical X-ray flares observed in soft X-ray or optical band, but comparable to those observed in prompt emissions. Despite these exceptional properties, the flare shares several common properties with typical GRB flares. We note that this is the first observation of a GRB flare in the keV-MeV band with sufficiently high temporal resolution and high statistics, which bridges the last gap between prompt emission and flare.",
    "arxiv_id": "2601.07688",
    "authors": [
      "Zheng-Hang Yu",
      "Chen-Wei Wang",
      "Shao-Lin Xiong",
      "Shuang-Xi Yi",
      "Wen-Long Zhang",
      "Wen-Jun Tan",
      "Yan-Qiu Zhang",
      "Chao Zheng",
      "Hao-Xuan Guo",
      "Jia-Cong Liu",
      "Yang-Zhao Ren",
      "Yue Wang",
      "Sheng-Lun Xie",
      "Wang-Chen Xue",
      "Jin-Peng Zhang",
      "Peng Zhang",
      "Zheng-Hua An",
      "Ce Cai",
      "Pei-Yi Feng",
      "Min Gao",
      "Ke Gong",
      "Dongya Guo",
      "Yue Huang",
      "Bing Li",
      "Cheng-Kui Li",
      "Xiao-Bo Li",
      "Xin-Qiao Li",
      "Ya-Qing Liu",
      "Xiao-Jing Liu",
      "Xiang Ma",
      "Wenxi Peng",
      "Rui Qiao",
      "Li-Ming Song",
      "Jin Wang",
      "Jin-Zhou Wang",
      "Ping Wang",
      "Xiang-Yang Wen",
      "Shuo Xiao",
      "Sheng Yang",
      "Shu-Xu Yi",
      "Qi-Bin Yi",
      "Da-Li Zhang",
      "Fan Zhang",
      "Shuang-Nan Zhang",
      "Yan-Ting Zhang",
      "Zhen Zhang",
      "Xiao-Yun Zhao",
      "Yi Zhao",
      "Shi-Jie Zheng"
    ],
    "categories": [
      "astro-ph.HE"
    ],
    "doi": "10.3847/2041-8213/ae33be",
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "title": "Brightest GRB flare observed in GRB 221009A: bridge the last gap between flare and prompt emission in GRB",
    "url": "https://arxiv.org/abs/2601.07688",
    "version": "v2"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d777cd5f-50d0-4ef9-a879-d692b02145aa",
    "id": "arXiv Dataset",
    "type": "Model",
    "variant": "snapshot-2026-01-17",
    "version": "0.1.0"
  },
  "user_id": 1000002
}