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The correlation between dip width and peak flux in Cir X-1

文献类型：期刊论文

作者Yu, Zhuo-Li5,6; Zhang, Shu6; Zhang, Shuang-Nan6; Li, Xiang-Dong4; Chen, Yu-Peng6; Peng, Jing-Qiang3,6; Shui, Qing-Cang3,6; Yan Z(颜哲)1,3,6; Kong, Ling-Da2; Wang, Peng-Ju2
刊名ASTRONOMY & ASTROPHYSICS
出版日期2024-10-17
卷号690
关键词accretion accretion disks binaries: general stars: individual: Cir X-1
ISSN号0004-6361
DOI10.1051/0004-6361/202450012
产权排序第5完成单位
文献子类Article
英文摘要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).
学科主题天文学 ; 星系与宇宙学
URL标识查看原文
出版地17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE
WOS关键词X-RAY-BURSTS ; CIRCINUS X-1 ; COMPANION STAR ; BINARY-SYSTEMS ; EVOLUTION ; SCIENCE
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
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001336770600016
出版者EDP SCIENCES S A
资助机构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]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/27654]  
专题云南天文台_高能天体物理研究组
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China;
2.Institut für Astronomie und Astrophysik, Kepler Center for Astro and Particle Physics, Eberhard Karls, Universität, Sand 1, D-72076 Tübingen, Germany
3.University of Chinese Academy of Sciences, Chinese Academy of Sciences, 100049 Beijing, People’s Republic of China;
4.School of Astronomy and Space Science and Key Laboratory of Modern Astronomy and Astrophysics, Nanjing University, 210023 Nanjing, People’s Republic of China;
5.Dongguan Neutron Science Center, 1 Zhongziyuan Road, Dongguan 523808, People’s Republic of China;
6.Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, 100049 Beijing, People’s Republic of China;
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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来源：云南天文台

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