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Detection of a Low-frequency Quasi-periodic Oscillation in the Soft State of Cygnus X-1 with Insight-HXMT
Yan, Zhen; Rapisarda, Stefano; Yu, Wenfei
2021-09-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume919Issue:1Pages:9
AbstractWe report the detection of a short-lived narrow quasi-periodic oscillation (QPO) at similar to 88 mHz in an Insight-HXMT exposure during the soft state of the persistent black hole high-mass X-ray binary Cygnus X-1. This QPO is significantly detected in all three instruments of Insight-HXMT, so in the broad energy range 1-250 keV. The fractional rms of the QPO does not show significant variations above 3 keV (similar to 5%) while it decreases at lower energy (similar to 2%). We show that this QPO is different from the type-A, -B, and -C QPOs usually observed in black hole X-ray binaries. We compare QPOs at similar frequencies that have been previously detected in other persistent high-mass X-ray binaries in the soft state; we speculate that such QPOs might relate to some local inhomogeneity rarely formed in the accretion flow of wind-fed accretion systems.
Funding OrganizationNatural Science Foundation of China ; Natural Science Foundation of China ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; PIFI fellowship of CAS ; PIFI fellowship of CAS ; China's Postdoctoral International Exchange Program ; China's Postdoctoral International Exchange Program ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Natural Science Foundation of China ; Natural Science Foundation of China ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; PIFI fellowship of CAS ; PIFI fellowship of CAS ; China's Postdoctoral International Exchange Program ; China's Postdoctoral International Exchange Program ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Natural Science Foundation of China ; Natural Science Foundation of China ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; PIFI fellowship of CAS ; PIFI fellowship of CAS ; China's Postdoctoral International Exchange Program ; China's Postdoctoral International Exchange Program ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Natural Science Foundation of China ; Natural Science Foundation of China ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; PIFI fellowship of CAS ; PIFI fellowship of CAS ; China's Postdoctoral International Exchange Program ; China's Postdoctoral International Exchange Program ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project
DOI10.3847/1538-4357/ac0f7b
WOS KeywordX-RAY BINARIES ; BLACK-HOLE ; ACCRETION FLOWS ; GAMMA-RAY ; HARD ; VARIABILITY ; SIGNALS ; DISCOVERY ; BEHAVIOR ; MASS
Language英语
Funding ProjectNatural Science Foundation of China[11773055] ; Natural Science Foundation of China[U1838203] ; Natural Science Foundation of China[U1938114] ; Youth Innovation Promotion Association of CAS[2020265] ; PIFI fellowship of CAS[2019PM0016] ; China's Postdoctoral International Exchange Program ; National Program on Key Research and Development Project[2016YFA0400804]
Funding OrganizationNatural Science Foundation of China ; Natural Science Foundation of China ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; PIFI fellowship of CAS ; PIFI fellowship of CAS ; China's Postdoctoral International Exchange Program ; China's Postdoctoral International Exchange Program ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Natural Science Foundation of China ; Natural Science Foundation of China ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; PIFI fellowship of CAS ; PIFI fellowship of CAS ; China's Postdoctoral International Exchange Program ; China's Postdoctoral International Exchange Program ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Natural Science Foundation of China ; Natural Science Foundation of China ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; PIFI fellowship of CAS ; PIFI fellowship of CAS ; China's Postdoctoral International Exchange Program ; China's Postdoctoral International Exchange Program ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project ; Natural Science Foundation of China ; Natural Science Foundation of China ; Youth Innovation Promotion Association of CAS ; Youth Innovation Promotion Association of CAS ; PIFI fellowship of CAS ; PIFI fellowship of CAS ; China's Postdoctoral International Exchange Program ; China's Postdoctoral International Exchange Program ; National Program on Key Research and Development Project ; National Program on Key Research and Development Project
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000697836700001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/75726
Collection中国科学院国家天文台
Corresponding AuthorYan, Zhen
AffiliationChinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
Recommended Citation
GB/T 7714
Yan, Zhen,Rapisarda, Stefano,Yu, Wenfei. Detection of a Low-frequency Quasi-periodic Oscillation in the Soft State of Cygnus X-1 with Insight-HXMT[J]. ASTROPHYSICAL JOURNAL,2021,919(1):9.
APA Yan, Zhen,Rapisarda, Stefano,&Yu, Wenfei.(2021).Detection of a Low-frequency Quasi-periodic Oscillation in the Soft State of Cygnus X-1 with Insight-HXMT.ASTROPHYSICAL JOURNAL,919(1),9.
MLA Yan, Zhen,et al."Detection of a Low-frequency Quasi-periodic Oscillation in the Soft State of Cygnus X-1 with Insight-HXMT".ASTROPHYSICAL JOURNAL 919.1(2021):9.
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