Timing analysis of 2S 1417-624 observed with NICER and Insight-HXMT
文献类型：期刊论文
| 作者 | Ji, L.; Doroshenko, V; Santangelo, A.; Gungor, C.; Zhang, S.; Ducci, L.; Zhang, S-N; Ge, M-Y; Qu, L. J.; Chen, Y. P. |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2020 |
| 卷号 | 491期号:2页码:1851-1856 |
| ISSN号 | 0035-8711 |
| 关键词 | stars: magnetic field stars: neutron X-rays: binaries X-rays: individual: 2S 1417-624 |
| DOI | 10.1093/mnras/stz2745 |
| 文献子类 | Article |
| 英文摘要 | We present a study of timing properties of the accreting pulsar 2S 1417-624 observed during its 2018 outburst, based on Swift/BAT, Fermi/GBM, Insight-HXMT, and NICER observations. We report a dramatic change of the pulse profiles with luminosity. The morphology of the profile in the range 0.2-10.0 keV switches from double to triple peaks at similar to 2.5 x 10(37)D(10)(2) erg s(-1) and from triple to quadruple peaks at similar to 7x10(37)D(10)(2) erg s(-1). The profile at high energies (25-100 keV) shows significant evolutions as well. We explain this phenomenon according to existing theoretical models. We argue that the first change is related to the transition from the sub to the supercritical accretion regime, while the second to the transition of the accretion disc from the gas-dominated to the radiation pressure-dominated state. Considering the spin-up as well due to the accretion torque, this interpretation allows to estimate the magnetic field self-consistently at similar to 7 x 10(12) G. |
| 电子版国际标准刊号 | 1365-2966 |
| WOS关键词 | MAGNETIZED NEUTRON-STARS ; ACCRETION LUMINOSITY ; RAY |
| 语种 | 英语 |
| WOS记录号 | WOS:000512302100024 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/287871]  |
| 专题 | 硬X射线调制望远镜卫星 |
| 推荐引用方式 GB/T 7714 | Ji, L.,Doroshenko, V,Santangelo, A.,et al. Timing analysis of 2S 1417-624 observed with NICER and Insight-HXMT[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,491(2):1851-1856. |
| APA | Ji, L..,Doroshenko, V.,Santangelo, A..,Gungor, C..,Zhang, S..,...&Zhu, Y. X..(2020).Timing analysis of 2S 1417-624 observed with NICER and Insight-HXMT.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,491(2),1851-1856. |
| MLA | Ji, L.,et al."Timing analysis of 2S 1417-624 observed with NICER and Insight-HXMT".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 491.2(2020):1851-1856. |
入库方式： OAI收割
来源：高能物理研究所
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