Search for the signatures of a new-born black hole from the collapse of a supra-massive millisecond magnetar in short GRB light curves
文献类型：期刊论文
| 作者 | Lei, WH; Zhang Q(张强); Zhang, Q ; Zhang, BB; Chen, W; Xiong, SL; Song, LM; Xiong SL(熊少林); Song LM(宋黎明)
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2018 |
| 卷号 | 475期号:1页码:266-276 |
| 关键词 | accretion, accretion discs gamma-ray burst: individual: (GRB 101219A, GRB 160821B) stars: magnetars |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/stx3229 |
| 文献子类 | Article |
| 英文摘要 | 'Internal plateau' followed by a sharp decay is commonly seen in short gamma-ray burst (GRB) light curves. The plateau component is usually interpreted as the dipole emission from a supra-massive magnetar, and the sharp decay may imply the collapse of the magnetar to a black hole (BH). Fall-back accretion on to the new-born BH could produce long-lasting activities via the Blandford-Znajek (BZ) process. The magnetic flux accumulated near the BH would be confined by the accretion discs for a period of time. As the accretion rate decreases, the magnetic flux is strong enough to obstruct gas infall, leading to a magnetically arrested disc. Within this scenario, we show that the BZ process could produce two types of typical X-ray light curves: type I exhibits a long-lasting plateau, followed by a power-law (PL) decay with slopes ranging from 5/3 to 40/9; type II shows roughly a single PL decay with a slope of 5/3. The former requires low magnetic field strength, while the latter corresponds to relatively high values. We search for such signatures of the new-born BH from a sample of short GRBs with an internal plateau, and find two candidates: GRB 101219A and GRB 160821B, corresponding to type II and type I light curves, respectively. It is shown that our model can explain the data very well. |
| 电子版国际标准刊号 | 1365-2966 |
| WOS关键词 | GAMMA-RAY BURSTS ; COMPACT-OBJECT MERGERS ; COOLED ACCRETION DISKS ; MERGING NEUTRON-STARS ; FAST RADIO-BURSTS ; EXTENDED EMISSION ; CENTRAL ENGINE ; FALLBACK ACCRETION ; SPIN-DOWN ; AFTERGLOW |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000427144200022 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/285766]  |
| 专题 | 高能物理研究所_粒子天体物理中心 高能物理研究所_多学科研究中心 中国科学院高能物理研究所_中国散裂中子源 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Lei, WH,Zhang Q,Zhang, Q,et al. Search for the signatures of a new-born black hole from the collapse of a supra-massive millisecond magnetar in short GRB light curves[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,475(1):266-276. |
| APA | Lei, WH.,张强.,Zhang, Q.,Zhang, BB.,Chen, W.,...&宋黎明.(2018).Search for the signatures of a new-born black hole from the collapse of a supra-massive millisecond magnetar in short GRB light curves.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,475(1),266-276. |
| MLA | Lei, WH,et al."Search for the signatures of a new-born black hole from the collapse of a supra-massive millisecond magnetar in short GRB light curves".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 475.1(2018):266-276. |
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来源：高能物理研究所
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