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Revisiting the X-ray emission of the asynchronous polar V1432 Aql
Wang QS(王琪善)1,2,3; Qian SB(钱声帮)1,2,3,4; Zhu LY(朱俐颖)1,2,3,4
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
2022
卷号21期号:12
关键词stars individual (V1432 Aql) cataclysmic variables asynchronous polars
ISSN号1674-4527
DOI10.1088/1674-4527/21/12/315
产权排序第1完成单位
文献子类Article
英文摘要

As the only eclipsing asynchronous polar, V1432 Aql provides an excellent laboratory to study the interaction between the accreted matter and the magnetic field. Here, we report an analysis of the X-ray data from the contemporaneous NuSTAR and Swift-XRT observations. The X-ray data present a profile with a low-intensity state for almost half an orbital period, a dip at 0.6 phase, and a peak at 0.75 phase, which suggests that there was only one accretion region during the observation and the claim is supported by the spectral analysis. The comparison with the previous data indicates that the X-ray data have an orbital modulation, as the case in BeppoSAX, rather than a spin one observed in ROSAT. We attribute the orbit and spin modulations to the different accretion geometries at work. The spectral analysis of the wide-band data presents a significant reflection effect, a commonly observed soft X-ray temperature, and the energy balance in V1432 Aql. Additionally, we obtained a low total accretion rate of 1.3 x 10(-10) M (circle dot) yr(-1) and a high specific accretion rate of 3.8 g cm(-2) s(-1) which explains the strong reflection from the surface of the white dwarf. However, due to its complex emission, a more physical understanding of its accretion geometry is still outstanding.

学科主题天文学 ; 恒星与银河系 ; 恒星形成与演化
URL标识查看原文
出版地20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA
资助项目National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11933008] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11922306] ; Chinese Academy of Sciences Interdisciplinary Innovation Team ; NASANational Aeronautics & Space Administration (NASA) ; NuSTAR Operations, Software and Calibration teams ; Swift Operations team
WOS关键词ACCRETION GEOMETRY ; WHITE-DWARF ; AM ; SYNCHRONIZATION ; APPROXIMATIONS ; TEMPERATURE ; REFLECTION ; AQUILAE ; ENERGY ; SPIN
WOS研究方向Astronomy & Astrophysics
语种英语
出版者NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
WOS记录号WOS:000741580800001
资助机构National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11933008, 11922306] ; Chinese Academy of Sciences Interdisciplinary Innovation Team ; NASANational Aeronautics & Space Administration (NASA) ; NuSTAR Operations, Software and Calibration teams ; Swift Operations team
内容类型期刊论文
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/24787]  
专题云南天文台_双星与变星研究组
通讯作者Wang QS(王琪善)
作者单位1.University of Chinese Academy of Sciences, Beijing 100049, China;
2.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China;
3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China;
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100101, China
推荐引用方式
GB/T 7714
Wang QS,Qian SB,Zhu LY. Revisiting the X-ray emission of the asynchronous polar V1432 Aql[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2022,21(12).
APA Wang QS,Qian SB,&Zhu LY.(2022).Revisiting the X-ray emission of the asynchronous polar V1432 Aql.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,21(12).
MLA Wang QS,et al."Revisiting the X-ray emission of the asynchronous polar V1432 Aql".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 21.12(2022).
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