Probing the accretion disc structure by the twin kHz QPOs and spins of neutron stars in LMXBs
文献类型：期刊论文
| 作者 | Zhang, CM; Lei, YJ; Chen, L ; Zhi, QJ; Qu, JL; Qu JL(屈进禄); Wang, DH
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2017 |
| 卷号 | 466期号:1页码:1111-1117 |
| 关键词 | accretion, accretion discs binaries: close stars: neutron X-rays: binaries |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/stw3134 |
| 文献子类 | Article |
| 英文摘要 | We analyse the relation between the emission radii of twin kilohertz quasi-periodic oscillations (kHz QPOs) and the co-rotation radii of the 12 neutron star low-mass X-ray binaries (NS-LMXBs), which are simultaneously detected with the twin kHz QPOs and NS spins. We find that the average co-rotation radius of these sources is < rco > similar to 32 km, and all the emission positions of twin kHz QPOs lie inside the co-rotation radii, indicating that the twin kHz QPOs are formed in the spin-up process. It is noticed that the upper frequency of twin kHz QPOs is higher than NS spin frequency by >= 10 per cent, which may account for a critical velocity difference between the Keplerian motion of accretion matter and NS spin that is corresponding to the production of twin kHz QPOs. In addition, we also find that similar to 83 per cent of twin kHz QPOs cluster around the radius range of 15-20 km, which may be affected by the hard surface or the local strong magnetic field of the NS. As a special case, SAX J1808.4-3658 shows the larger emission radii of twin kHz QPOs of r similar to 21-24 km, which may be due to its low accretion rate or small measured NS mass (< 1.4M(circle dot)). |
| 电子版国际标准刊号 | 1365-2966 |
| WOS关键词 | QUASI-PERIODIC OSCILLATIONS ; X-RAY BINARIES ; ATOLL SOURCE STATES ; 4U 1636-53 ; TIMING FEATURES ; FREQUENCY CORRELATIONS ; MILLISECOND PULSAR ; ORBITAL RESONANCE ; SAX J1808.4-3658 ; PEAK SEPARATION |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000398112400076 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/284850]  |
| 专题 | 高能物理研究所_理论物理室 高能物理研究所_粒子天体物理中心 |
| 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 | Zhang, CM,Lei, YJ,Chen, L,et al. Probing the accretion disc structure by the twin kHz QPOs and spins of neutron stars in LMXBs[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,466(1):1111-1117. |
| APA | Zhang, CM.,Lei, YJ.,Chen, L.,Zhi, QJ.,Qu, JL.,...&Wang, DH.(2017).Probing the accretion disc structure by the twin kHz QPOs and spins of neutron stars in LMXBs.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,466(1),1111-1117. |
| MLA | Zhang, CM,et al."Probing the accretion disc structure by the twin kHz QPOs and spins of neutron stars in LMXBs".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 466.1(2017):1111-1117. |
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来源：高能物理研究所
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