Spot Model for Identifications of Periods in Asynchronous Polars
文献类型:期刊论文
作者 | Wang QS(王琪善)1,2,3; Qian SB(钱声帮)1,2,3,4; Han ZT(韩忠涛)1,2,3; Fang XH(方小慧)1,2,3; Zang L(臧蕾)1,2,3; Liu, Wei5 |
刊名 | ASTROPHYSICAL JOURNAL |
出版日期 | 2020-03-20 |
卷号 | 892期号:1页码:8 |
ISSN号 | 0004-637X |
关键词 | AM Herculis stars X-ray binary stars X-ray photometry CCD photometry |
DOI | 10.3847/1538-4357/ab7759 |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | We improved the discless accretion models in Wynn & King considering the effects of the changing aspect due to the white dwarf (WD) spin and the variable feeding intensity caused by the asynchronism, and set up a more general spot model that is not sensitive to the different forms of these effects and can be applied for the period analysis of the optical and X-ray light curve. The spot model can produce the power spectra compatible with the observations, and its simulations limit the ratio P-spin/P-orb < 2 between the powers at the WD spin and the binary orbital frequencies, which is a strong criterion for identification of periods. Then we recognize the periods for CD Ind, BY Cam, and 1RXS J083842.1-282723. The spot model reveals a complex accretion geometry in the asynchronous polars (APs), which may indicate that the complex magnetic field causes their asynchronism. We think 1RXS J083842.1-282723 is a prepolar because of its highest asynchronism and stable light curve. Giving the unstable accretion process in APs, the period analysis of the long-term light curve will make the orbital signal prominent. |
学科主题 | 天文学 ; 恒星与银河系 ; 恒星天文学 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
资助项目 | Chinese Natural Science Foundation[11933008] ; Chinese Natural Science Foundation[11803083] ; NASAs Science Mission directorate ; ESA Member States ; USA (NASA) |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000522143900001 |
资助机构 | Chinese Natural Science Foundation[11933008, 11803083] ; NASAs Science Mission directorate ; ESA Member States ; USA (NASA) |
源URL | [http://ir.ynao.ac.cn/handle/114a53/22569] |
专题 | 云南天文台_双星与变星研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
通讯作者 | Wang QS(王琪善) |
作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences (CAS), P.O. Box 110, 650216 Kunming, People's Republic of China 2.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P.O. Box 110, 650216 Kunming, People's Republic of China 3.University of Chinese Academy of Sciences, Yuquan Road 19#, Sijingshang Block, 100049 Beijing, People's Republic of China 4.Center for Astronomical Mega-Science, Chinese Academy of Science, 20A Datun Road, Chaoyang District, Beijing, 100012, People's Republic of China 5.Guizhou Provincial Key Laboratory of Radio Data Processing, School of Physics and Electronic Sciences, Guizhou Normal University, Guiyang 550001, People's Republic of China |
推荐引用方式 GB/T 7714 | Wang QS,Qian SB,Han ZT,et al. Spot Model for Identifications of Periods in Asynchronous Polars[J]. ASTROPHYSICAL JOURNAL,2020,892(1):8. |
APA | Wang QS,Qian SB,Han ZT,Fang XH,Zang L,&Liu, Wei.(2020).Spot Model for Identifications of Periods in Asynchronous Polars.ASTROPHYSICAL JOURNAL,892(1),8. |
MLA | Wang QS,et al."Spot Model for Identifications of Periods in Asynchronous Polars".ASTROPHYSICAL JOURNAL 892.1(2020):8. |
入库方式: OAI收割
来源:云南天文台
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