A possible overall scenario for the outburst evolution of MAXI J1820+070 revealed by Insight-HXMT
文献类型：期刊论文
| 作者 | Peng, JQ; Zhang, S ; Chen, YP; Kong, LD; Wang, PJ; Zhang, SN; Ji, L; Tao, L; Qu, JL; Ge, MY
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2022 |
| 卷号 | 518期号:2页码:2521-2528 |
| 关键词 | X-rays: binaries X-rays: individual (MAXI J1820+070) |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/stac3238 |
| 文献子类 | Article |
| 英文摘要 | We study the spectral and temporal properties of the black hole X-ray transient binary MAXI J1820+070 during the 2018 outburst with Insight-HXMT observations. The outburst of MAXI J1820+070 can be divided into three intervals. For the two intervals of the outburst, we find that low-energy (below 140 keV) photons lag high-energy (140-170 keV) ones, while in the decay of the outburst, high-energy photons lag low-energy photons, both with a time-scale of the order of days. Based on these results, the canonical hysteresis effect of the 'q' shape in the hardness-intensity diagram can be reformed into a roughly linear shape by taking into account the lag corrections between different energy bands. Time analysis shows that the high-frequency break of hard X-rays, derived from the power-density spectrum of the first interval of the outburst, is in general larger and more variable than that of soft X-rays. The spectral fitting shows that the coverage fraction of the hard X-rays drops sharply at the beginning of the outburst to about 0.5, and then increases slightly. The coverage fraction drops to roughly zero once the source steps into soft state and increases gradually to unity when the source returns to low-hard state. We discuss the possible overall evolution scenario of corona hinted from these discoveries. |
| 电子版国际标准刊号 | 1365-2966 |
| 语种 | 英语 |
| WOS记录号 | WOS:000892603900006 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/299901]  |
| 专题 | 高能物理研究所_粒子天体物理中心 高能物理研究所_加速器中心 硬X射线调制望远镜卫星 |
| 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 | Peng, JQ,Zhang, S,Chen, YP,et al. A possible overall scenario for the outburst evolution of MAXI J1820+070 revealed by Insight-HXMT[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2022,518(2):2521-2528. |
| APA | Peng, JQ.,Zhang, S.,Chen, YP.,Kong, LD.,Wang, PJ.,...&Xiao, YX.(2022).A possible overall scenario for the outburst evolution of MAXI J1820+070 revealed by Insight-HXMT.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,518(2),2521-2528. |
| MLA | Peng, JQ,et al."A possible overall scenario for the outburst evolution of MAXI J1820+070 revealed by Insight-HXMT".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 518.2(2022):2521-2528. |
入库方式： OAI收割
来源：高能物理研究所
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