| The correlation between dip width and peak flux in Cir X-1 | |
Yu, Zhuo-Li1,2; Zhang, Shu1; Zhang, Shuang-Nan1; Li, Xiang-Dong3; Chen, Yu-Peng1; Peng, Jing-Qiang1,4; Shui, Qing-Cang1,4; Yan Z(颜哲)1,4,5 ; Kong, Ling-Da6; Wang, Peng-Ju6
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| 发表期刊 | ASTRONOMY & ASTROPHYSICS
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| 2024-10-17 | |
| 卷号 | 690 |
| DOI | 10.1051/0004-6361/202450012 |
| 产权排序 | 第5完成单位 |
| 收录类别 | EI ; SCI |
| 关键词 | accretion accretion disks binaries: general stars: individual: Cir X-1 |
| 摘要 | In this work we analyzed the long-term X-ray variation of Cir X-1 and its NICER spectra. The dip width and the peak flux after periastron are obtained. Our findings show a negative correlation between the dip width and the peak flux. A new scenario is introduced to explain the correlation. The disk height is higher at a larger radius in the standard model. When the neutron star (NS) moves away from periastron, the contraction of the equipotential surface causes the height of the outer disk to increase significantly. It blocks the X-ray emission near the NS. Subsequently, the height of the outer disk gradually decreases due to the viscosity. The viscous timescale is inversely proportional to the height of the disk, and the height of the outer disk is proportional to the mass transferred from the companion near periastron, thus the peak flux. Consequently, the duration of the obscuring, corresponding to the dip width, is inversely proportional to the peak flux. Moreover, we introduce a new ephemeris MJD(N) = 43075.0 + 16.5843N - 4.778 x 10(-5)N(2) based on the dip-in phases (ingress phase of the dip). |
| 资助项目 | International Partnership Program of the Chinese Academy of Sciences; National Key R&D Program of China[2021YFA0718500]; National Natural Science Foundation of China[12173103]; National Natural Science Foundation of China[12333007]; National Natural Science Foundation of China[U2038101]; National Natural Science Foundation of China[U1938103]; Sino-German (CSC-DAAD) Postdoc Scholarship Program |
| 项目资助者 | International Partnership Program of the Chinese Academy of Sciences ; National Key R&D Program of China[2021YFA0718500] ; National Natural Science Foundation of China[12173103, 12333007, U2038101, U1938103] ; Sino-German (CSC-DAAD) Postdoc Scholarship Program[91839752] ; [113111KYSB20190020] |
| 语种 | 英语 |
| 学科领域 | 天文学 ; 星系与宇宙学 |
| 文章类型 | Article |
| 出版者 | EDP SCIENCES S A |
| 出版地 | 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE |
| ISSN | 0004-6361 |
| URL | 查看原文 |
| WOS记录号 | WOS:001336770600016 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | X-RAY-BURSTS ; CIRCINUS X-1 ; COMPANION STAR ; BINARY-SYSTEMS ; EVOLUTION ; SCIENCE |
| EI入藏号 | 20244417294656 |
| EI主题词 | Stars |
| EI分类号 | 1302.1.2 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 版本 | 出版稿 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/27654 |
| 专题 | 高能天体物理研究组 |
| 作者单位 | 1.Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, 100049 Beijing, People’s Republic of China; 2.Dongguan Neutron Science Center, 1 Zhongziyuan Road, Dongguan 523808, People’s Republic of China; 3.School of Astronomy and Space Science and Key Laboratory of Modern Astronomy and Astrophysics, Nanjing University, 210023 Nanjing, People’s Republic of China; 4.University of Chinese Academy of Sciences, Chinese Academy of Sciences, 100049 Beijing, People’s Republic of China; 5.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China; 6.Institut für Astronomie und Astrophysik, Kepler Center for Astro and Particle Physics, Eberhard Karls, Universität, Sand 1, D-72076 Tübingen, Germany |
| 推荐引用方式 GB/T 7714 | Yu, Zhuo-Li,Zhang, Shu,Zhang, Shuang-Nan,et al. The correlation between dip width and peak flux in Cir X-1[J]. ASTRONOMY & ASTROPHYSICS,2024,690. |
| APA | Yu, Zhuo-Li.,Zhang, Shu.,Zhang, Shuang-Nan.,Li, Xiang-Dong.,Chen, Yu-Peng.,...&Wang, Peng-Ju.(2024).The correlation between dip width and peak flux in Cir X-1.ASTRONOMY & ASTROPHYSICS,690. |
| MLA | Yu, Zhuo-Li,et al."The correlation between dip width and peak flux in Cir X-1".ASTRONOMY & ASTROPHYSICS 690(2024). |
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