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X-Ray Investigations of Two Suspected Intermediate Polars: 2PBC J1911.4+1412 and SWIFT J0614.0+1709

文献类型：期刊论文

作者Yan, Fang-Zhou1; Qian, Sheng-Bang1; Qian, Ming-Yu2; Liao WP(廖文萍)3,4
刊名ASTROPHYSICAL JOURNAL
出版日期2026-06-01
卷号1003期号:2
ISSN号0004-637X
DOI10.3847/1538-4357/ae6913
产权排序第3完成单位
文献子类Article
英文摘要We present XMM-Newton X-ray observations of two intermediate polar candidates (2PBC J1911.4+1412 and SWIFT J0614.0+1709). Their spin periods are detected for the first time in X-rays: 747.58 +/- 0.49 s (>5 sigma) and 1411.61 +/- 2.67 s (>5 sigma), consistent with optical periods (Zwicky Transient Facility and TESS). The X-ray power spectrum of SWIFT J0614.0+1709 also reveals a sideband period of 1684.12 +/- 9.59 s (>3 sigma). Folded light curves show in-phase variations across all bands. The pulsed fraction decreases with increasing energy: for 2PBC J1911.4+1412, it is 77% +/- 5%, 44% +/- 7%, and 27% +/- 9% in the 0.3-2, 2-5, and 5-10 keV bands; for SWIFT J0614.0+1709, it is 84% +/- 15%, 49% +/- 8%, and 30% +/- 8% in the 0.3-2, 2-4, and 4-10 keV bands. This can be explained by spin-phase-dependent photoelectric absorption variations. Spectral analysis reveals the Fe K alpha fluorescence line in both sources, with equivalent widths of 166 and 182 eV. Plasma temperatures (kT) are 9.2 +/- 1.6 keV and 19.4 +/- 6.0 keV, respectively. These X-ray characteristics strongly support classifying both sources as intermediate polars.
学科主题天文学 ; 恒星与银河系
URL标识查看原文
出版地No.2 The Distillery, Glassfields, Avon Street, Bristol, ENGLAND
WOS关键词MAGNETIC CATACLYSMIC VARIABLES ; TESS LIGHT CURVES ; TX COL ; FREQUENCY ; EMISSION ; ORIGIN ; CV
资助项目Science Foundation of Yunnan Province[202503AP140013]; Science Foundation of Yunnan Province[202501AS070055]; Science Foundation of Yunnan Province[202401AS070046]; International Partnership Program of Chinese Academy of Sciences[020GJHZ2023030GC]; National Natural Science Foundation of China[12573038]; National Natural Science Foundation of China[12503040]; Postdoctoral Fellowship Program of CPSF[GZC20252095]; China Postdoctoral Science Foundation[2025M773194]; Caiyun Postdoctoral Program in Yunnan Province of China[C615300504124]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001773922600001
出版者IOP Publishing Ltd
资助机构Science Foundation of Yunnan Province[202503AP140013, 202501AS070055, 202401AS070046] ; International Partnership Program of Chinese Academy of Sciences[020GJHZ2023030GC] ; National Natural Science Foundation of China[12573038, 12503040] ; Postdoctoral Fellowship Program of CPSF[GZC20252095] ; China Postdoctoral Science Foundation[2025M773194] ; Caiyun Postdoctoral Program in Yunnan Province of China[C615300504124]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/29244]  
专题云南天文台_双星与变星研究组
通讯作者Qian, Sheng-Bang
作者单位1.Department of Astronomy, School of Physics and Astronomy, Yunnan University, Kunming 650091, People’s Republic of China; qiansb@ynu.edu.cn;
2.School of Electrical Engineering and Telecommunications, University of New South Wales, High St., Kensington, NSW 2052, Sydney, Australia;
3.Yunnan Observatories, Chinese Academy of Sciences (CAS), Kunming 650216, People’s Republic of China;
4.University of Chinese Academy of Sciences, No.1 Yanqihu East Rd., Huairou District, Beijing 101408, People’s Republic of China
推荐引用方式
GB/T 7714		 Yan, Fang-Zhou,Qian, Sheng-Bang,Qian, Ming-Yu,et al. X-Ray Investigations of Two Suspected Intermediate Polars: 2PBC J1911.4+1412 and SWIFT J0614.0+1709[J]. ASTROPHYSICAL JOURNAL,2026,1003(2).
APA Yan, Fang-Zhou,Qian, Sheng-Bang,Qian, Ming-Yu,&廖文萍.(2026).X-Ray Investigations of Two Suspected Intermediate Polars: 2PBC J1911.4+1412 and SWIFT J0614.0+1709.ASTROPHYSICAL JOURNAL,1003(2).
MLA Yan, Fang-Zhou,et al."X-Ray Investigations of Two Suspected Intermediate Polars: 2PBC J1911.4+1412 and SWIFT J0614.0+1709".ASTROPHYSICAL JOURNAL 1003.2(2026).

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来源：云南天文台

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