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Radiation mechanism of twin kilohertz quasi-periodic oscillations in neutron star low-mass X-ray binaries

文献类型：期刊论文

作者Shi, Chang-Sheng4; Zhang GB(张国宝)3; Zhang, Shuang-Nan2; Li, Xiang-Dong1; Zhang GB(张国宝)
刊名Astronomy and Astrophysics
出版日期2024-11-01
卷号691
关键词accretion accretion disks radiation: dynamics scattering stars: neutron
ISSN号0004-6361
DOI10.1051/0004-6361/202449728
产权排序第2完成单位
文献子类Journal article (JA)
英文摘要Context. The connection between quasi-periodic oscillations (QPOs) and magnetic fields has been investigated in various celestial bodies. Magnetohydrodynamic (MHD) waves have been employed to explain the simultaneous upper and lower kilohertz (kHz) QPOs. Nevertheless, the intricate and undefined formation pathways of twin kHz QPOs present a compelling avenue for exploration. This study area holds great interest as it provides an opportunity for deriving crucial parameters related to compact stars. Aims. We strive to develop a self-consistent model elucidating the radiation mechanism of twin kHz QPOs, which we then compare it with observations. Methods. A sample of 28 twin kHz QPOs detected from the X-ray binary 4U 1636–53 was used for a comparison with the results of the Markov chain Monte Carlo calculations based on our model of the radiation mechanism of twin kHz QPOs, which is related to twin MHD waves. Results. We obtained 28 groups of parameters of 4U 1636–53 and a tight exponential fit between the flux and the temperature of seed photons to Compton up-scattering and find that the electron temperature in the corona around the neutron star decreases with increasing seed photon temperature. Conclusions. The origin of twin kHz QPOs are dual disturbances that arise from twin MHD waves that are generated at the innermost radius of an accretion disc. The seed photons can be transported through a high temperature corona and are Compton up-scattered. The photons that vary the frequencies of twin MHD waves lead to the observed twin kHz QPOs. © The Authors 2024.
学科主题天文学 ; 星系与宇宙学
URL标识查看原文
资助项目National Natural Science Foundation of China[12027803];National Natural Science Foundation of China[12121003];National Natural Science Foundation of China[12373043];National Natural Science Foundation of China[11563003];National Natural Science Foundation of China[12063001];National Natural Science Foundation of China[12333007];National Natural Science Foundation of China[12041301];National Key Research and Development Program of China[2021YFA0718500]
语种英语
资助机构National Natural Science Foundation of China[12027803, 12121003, 12373043, 11563003, 12063001, 12333007, 12041301] ; National Key Research and Development Program of China[2021YFA0718500]
源URL[http://ir.ynao.ac.cn/handle/114a53/27798]  
专题星系类星体研究组
作者单位1.School of Astronomy and Space Science, Nanjing University, Nanjing, 210023, China
2.Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China;
3.Yunnan Observatory of Chinese Academy of Sciences, Kunming, 650216, China;
4.School of Physics and Optoelectronic Engineering, Hainan University, Hainan, 570228, China;
推荐引用方式
GB/T 7714		 Shi, Chang-Sheng,Zhang GB,Zhang, Shuang-Nan,et al. Radiation mechanism of twin kilohertz quasi-periodic oscillations in neutron star low-mass X-ray binaries[J]. Astronomy and Astrophysics,2024,691.
APA Shi, Chang-Sheng,张国宝,Zhang, Shuang-Nan,Li, Xiang-Dong,&Zhang GB.(2024).Radiation mechanism of twin kilohertz quasi-periodic oscillations in neutron star low-mass X-ray binaries.Astronomy and Astrophysics,691.
MLA Shi, Chang-Sheng,et al."Radiation mechanism of twin kilohertz quasi-periodic oscillations in neutron star low-mass X-ray binaries".Astronomy and Astrophysics 691(2024).

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