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| Auteurs principaux: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2022
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| Sujets: | |
| Accès en ligne: | https://arxiv.org/abs/2205.02186 |
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| _version_ | 1866929424999383040 |
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| author | Xiao, Shuo Zhang, Yan-Qiu Zhu, Zi-Pei Xiong, Shao-Lin Gao, He Xu, Dong Zhang, Shuang-Nan Peng, Wen-Xi Li, Xiao-Bo Zhang, Peng Lu, Fang-Jun Lin, Lin Liu, Liang-Duan Zhang, Zhen Ge, Ming-Yu Tuo, You-Li Xue, Wang-Chen Fu, Shao-Yu Liu, Xing Liu, Jin-Zhong Li, An Wang, Tian-Cong Zheng, Chao Wang, Yue Jiang, Shuai-Qing Li, Jin-Da Liu, Jia-Cong Cao, Zhou-Jian Luo, Xi-Hong Yang, Jiao-Jiao Yi, Shu-Xu Wang, Xi-Lu Cai, Ce Yi, Qi-Bin Zhao, Yi Xie, Sheng-Lun Li, Cheng-Kui Luo, Qi Song, Li-Ming Zhang, Shu Qu, Jin-Lu Liu, Cong-Zhan Li, Xu-Fang Xu, Yu-Peng Li, Ti-Pei |
| author_facet | Xiao, Shuo Zhang, Yan-Qiu Zhu, Zi-Pei Xiong, Shao-Lin Gao, He Xu, Dong Zhang, Shuang-Nan Peng, Wen-Xi Li, Xiao-Bo Zhang, Peng Lu, Fang-Jun Lin, Lin Liu, Liang-Duan Zhang, Zhen Ge, Ming-Yu Tuo, You-Li Xue, Wang-Chen Fu, Shao-Yu Liu, Xing Liu, Jin-Zhong Li, An Wang, Tian-Cong Zheng, Chao Wang, Yue Jiang, Shuai-Qing Li, Jin-Da Liu, Jia-Cong Cao, Zhou-Jian Luo, Xi-Hong Yang, Jiao-Jiao Yi, Shu-Xu Wang, Xi-Lu Cai, Ce Yi, Qi-Bin Zhao, Yi Xie, Sheng-Lun Li, Cheng-Kui Luo, Qi Song, Li-Ming Zhang, Shu Qu, Jin-Lu Liu, Cong-Zhan Li, Xu-Fang Xu, Yu-Peng Li, Ti-Pei |
| contents | 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 main burst is $\sim$ 1 s, comparable to that between GW 170817 and GRB 170817A. The spectrum of the precursor could be well fit with a non-thermal cutoff power-law model instead of a blackbody. Especially, a $\sim$22 Hz Quasi-Periodic Oscillation candidate ($\sim 3σ$) is detected in the precursor. These temporal and spectral properties indicate that this precursor is probably produced by a catastrophic flare accompanying with magnetoelastic or crustal oscillations of a magnetar in binary compact merger. The strong magnetic field of the magnetar can also account for the prolonged duration of GRB 211211A. However, it poses a challenge to reconcile the rather short lifetime of a magnetar with the rather long spiraling time of a binary neutron star system only by the GW radiation before merger. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2205_02186 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | The Peculiar Precursor of a Gamma-Ray Burst from a Binary Merger Involving a Magnetar Xiao, Shuo Zhang, Yan-Qiu Zhu, Zi-Pei Xiong, Shao-Lin Gao, He Xu, Dong Zhang, Shuang-Nan Peng, Wen-Xi Li, Xiao-Bo Zhang, Peng Lu, Fang-Jun Lin, Lin Liu, Liang-Duan Zhang, Zhen Ge, Ming-Yu Tuo, You-Li Xue, Wang-Chen Fu, Shao-Yu Liu, Xing Liu, Jin-Zhong Li, An Wang, Tian-Cong Zheng, Chao Wang, Yue Jiang, Shuai-Qing Li, Jin-Da Liu, Jia-Cong Cao, Zhou-Jian Luo, Xi-Hong Yang, Jiao-Jiao Yi, Shu-Xu Wang, Xi-Lu Cai, Ce Yi, Qi-Bin Zhao, Yi Xie, Sheng-Lun Li, Cheng-Kui Luo, Qi Song, Li-Ming Zhang, Shu Qu, Jin-Lu Liu, Cong-Zhan Li, Xu-Fang Xu, Yu-Peng Li, Ti-Pei High Energy Astrophysical Phenomena 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 main burst is $\sim$ 1 s, comparable to that between GW 170817 and GRB 170817A. The spectrum of the precursor could be well fit with a non-thermal cutoff power-law model instead of a blackbody. Especially, a $\sim$22 Hz Quasi-Periodic Oscillation candidate ($\sim 3σ$) is detected in the precursor. These temporal and spectral properties indicate that this precursor is probably produced by a catastrophic flare accompanying with magnetoelastic or crustal oscillations of a magnetar in binary compact merger. The strong magnetic field of the magnetar can also account for the prolonged duration of GRB 211211A. However, it poses a challenge to reconcile the rather short lifetime of a magnetar with the rather long spiraling time of a binary neutron star system only by the GW radiation before merger. |
| title | The Peculiar Precursor of a Gamma-Ray Burst from a Binary Merger Involving a Magnetar |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2205.02186 |