Marginally Stable Nuclear Burning Triggered at Different Depths of the Neutron Star Surface in Low-mass X-Ray Binary 4U 1608-52
文献类型：期刊论文
| 作者 | Lyu, Ming1,2; Zhang GB(张国宝)3,4; Mendez, Mariano5; Xiao, Huaping1,2 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2026-04-20 |
| 卷号 | 1001期号:2 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ae58a0 |
| 产权排序 | 第3完成单位 |
| 文献子类 | Article |
| 英文摘要 | We investigated the timing and spectral properties of the millihertz quasiperiodic oscillations (mHz QPOs) in the neutron star low-mass X-ray binary 4U 1608-52 using NICER observations. Our analysis reveals a correlation between the QPO frequency and its absolute amplitude, while a negative correlation is present between the frequency and its fractional rms amplitude. Intensity-resolved spectral analysis indicates that the flux modulation of the mHz QPOs is primarily caused by the variations in the blackbody temperature in most observations. Furthermore, for the first time, we report that as the source evolves from the soft spectral state toward the transitional state, the marginally stable burning responsible for the mHz QPOs ignites at deeper layers of the neutron star surface. The radiation flux associated with the mHz QPOs shows a decreasing trend as the source moves into the transitional state. These two findings support a scenario in which the marginally stable nuclear burning ignites at deeper layers as the temperature decreases, releasing less energy from the nuclear reaction. Finally, we determine that the energy release rate of the marginally stable burning is around similar to 1035 erg s-1, consistent with the theoretical predictions. |
| 学科主题 | 天文学 ; 恒星与银河系 |
| URL标识 | 查看原文 |
| 出版地 | No.2 The Distillery, Glassfields, Avon Street, Bristol, ENGLAND |
| WOS关键词 | QUASI-PERIODIC OSCILLATIONS ; FREQUENCY ; BURSTS ; STABILITY ; DISCOVERY ; QPOS |
| 资助项目 | NASA's Goddard Space Flight Center; Hunan Education Department Foundation[25B0147]; Scientific Research Foundation of Education Bureau of Hunan Province[23A0132] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001751637500001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | NASA's Goddard Space Flight Center ; Hunan Education Department Foundation[25B0147] ; Scientific Research Foundation of Education Bureau of Hunan Province[23A0132] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/29179]  |
| 专题 | 云南天文台_中国科学院天体结构与演化重点实验室 |
| 通讯作者 | Lyu, Ming |
| 作者单位 | 1.Department of Physics, Xiangtan University, Xiangtan, Hunan 411105, People’s Republic of China; lvming@xtu.edu.cn; 2.Key Laboratory of Stars and Interstellar Medium, Xiangtan University, Xiangtan, Hunan 411105, People’s Republic of China; 3.Yunnan Observatories, Chinese Academy of Sciences (CAS), Kunming 650216, People’s Republic of China; 4.Key Laboratory for the Structure and Evolution of Celestial Objects, CAS, Kunming 650216, People’s Republic of China; 5.Kapteyn Astronomical Institute, University of Groningen, PO BOX 800, NL-9700 AV Groningen, The Netherlands |
| 推荐引用方式 GB/T 7714 | Lyu, Ming,Zhang GB,Mendez, Mariano,et al. Marginally Stable Nuclear Burning Triggered at Different Depths of the Neutron Star Surface in Low-mass X-Ray Binary 4U 1608-52[J]. ASTROPHYSICAL JOURNAL,2026,1001(2). |
| APA | Lyu, Ming,张国宝,Mendez, Mariano,&Xiao, Huaping.(2026).Marginally Stable Nuclear Burning Triggered at Different Depths of the Neutron Star Surface in Low-mass X-Ray Binary 4U 1608-52.ASTROPHYSICAL JOURNAL,1001(2). |
| MLA | Lyu, Ming,et al."Marginally Stable Nuclear Burning Triggered at Different Depths of the Neutron Star Surface in Low-mass X-Ray Binary 4U 1608-52".ASTROPHYSICAL JOURNAL 1001.2(2026). |
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来源：云南天文台
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