{"paper":{"title":"The Peculiar Precursor of a Gamma-Ray Burst from a Binary Merger Involving a Magnetar","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"An Li, Ce Cai, Chao Zheng, Cheng-Kui Li, Cong-Zhan Liu, Dong Xu, Fang-Jun Lu, He Gao, Jia-Cong Liu, Jiao-Jiao Yang, Jin-Da Li, Jin-Lu Qu, Jin-Zhong Liu, Liang-Duan Liu, Li-Ming Song, Lin Lin, Ming-Yu Ge, Peng Zhang, Qi-Bin Yi, Qi Luo, Shao-Lin Xiong, Shao-Yu Fu, Sheng-Lun Xie, Shuai-Qing Jiang, Shuang-Nan Zhang, Shuo Xiao, Shu-Xu Yi, Shu Zhang, Tian-Cong Wang, Ti-Pei Li, Wang-Chen Xue, Wen-Xi Peng, Xiao-Bo Li, Xi-Hong Luo, Xi-Lu Wang, Xing Liu, Xu-Fang Li, Yan-Qiu Zhang, Yi Zhao, You-Li Tuo, Yue Wang, Yu-Peng Xu, Zhen Zhang, Zhou-Jian Cao, Zi-Pei Zhu","submitted_at":"2022-05-04T17:03:08Z","abstract_excerpt":"The milestone discovery of GW 170817-GRB 170817A-AT 2017gfo has shown that gravitational wave (GW) could be produced during the merger of neutron star-neutron star/black hole and that in electromagnetic (EM) wave a gamma-ray burst (GRB) and a kilonova (KN) are generated in sequence after the merger. Observationally, however, EM property before the merger phase is still unclear. Here we report a peculiar precursor in a KN-associated long-duration GRB 211211A, providing evidence of the EM before the merger. This precursor lasts $\\sim$ 0.2 s, and the waiting time between the precursor and the mai"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2205.02186","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2205.02186/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}