Investigation into the reflection properties of the neutron star low-mass X-ray binary 4U 1636-53
文献类型:期刊论文
作者 | Lyu, M.6,7; Zhang GB(张国宝)4,5; Wang, H. G.3; García, F.2 |
刊名 | Astronomy and Astrophysics |
出版日期 | 2023-09-01 |
卷号 | 677 |
ISSN号 | 0004-6361 |
关键词 | accretion accretion disks techniques: spectroscopic stars: neutron X rays: binaries |
DOI | 10.1051/0004-6361/202346584 |
产权排序 | 第3完成单位 |
文献子类 | Journal article (JA) |
英文摘要 | We present the spectroscopy of the neutron star low-mass X-ray binary 4U 1636-53 using six simultaneous XMM-Newton and Rossi X-ray Timing Explorer observations. We applied different self-consistent reflection models to explore the features when the disk is illuminated by either the corona or the neutron star surface. We found that the spectra could be well fitted by these two types of models, with the derived emissivity index below a typical value of 3. The relative low emissivity can be explained if the neutron star and the corona, working together as an extended illuminator, simultaneously illuminate and ionize the disk. Additionally, the derived ionization parameter in the lamppost geometry is larger than the theoretical prediction. This inconsistency likely suggests that the corona does not emit isotropically in a realistic context. Furthermore, we also found that there is a possible trend between the height of the corona and the normalization of the disk emission. This could be understood either as a variation in the reflected radiation pressure or in the context of a jet base. Finally, we found that the disk is less ionized if it is illuminated by the neutron star, indicating that the illuminating source has significant influence on the physical properties of the disk. © The Authors 2023. |
学科主题 | 天文学 ; 天体物理学 ; 高能天体物理学 ; 恒星与银河系 |
URL标识 | 查看原文 |
资助项目 | National Natural Science Foundation of China[12133004] |
语种 | 英语 |
出版者 | EDP Sciences |
资助机构 | National Natural Science Foundation of China[12133004] |
源URL | [http://ir.ynao.ac.cn/handle/114a53/26326] |
专题 | 云南天文台_高能天体物理研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
作者单位 | 1.Villa Elisa, Buenos Aires, Argentina 2.Instituto Argentino de Radioastronomía (CCT La Plata, CONICET, CICPBA, UNLP), C.C.5, 3.Department of Astronomy, School of Physics and Materials Science, Guangzhou University, Guangzhou, 510006, China; 4.Key Laboratory for the Structure and Evolution of Celestial Objects, CAS, Kunming, 650216, China; 5.Yunnan Observatories, Chinese Academy of Sciences (CAS), Kunming, 650216, China; 6.Key Laboratory of Stars and Interstellar Medium, Xiangtan University, Xiangtan, Hunan, 411105, China; 7.Department of Physics, Xiangtan University, Xiangtan, Hunan, 411105, China; |
推荐引用方式 GB/T 7714 | Lyu, M.,Zhang GB,Wang, H. G.,et al. Investigation into the reflection properties of the neutron star low-mass X-ray binary 4U 1636-53[J]. Astronomy and Astrophysics,2023,677. |
APA | Lyu, M.,Zhang GB,Wang, H. G.,&García, F..(2023).Investigation into the reflection properties of the neutron star low-mass X-ray binary 4U 1636-53.Astronomy and Astrophysics,677. |
MLA | Lyu, M.,et al."Investigation into the reflection properties of the neutron star low-mass X-ray binary 4U 1636-53".Astronomy and Astrophysics 677(2023). |
入库方式: OAI收割
来源:云南天文台
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