A Phase-resolved View of the Low-frequency Quasiperiodic Oscillations from the Black Hole Binary MAXI J1820+070

doi:10.3847/1538-4357/acfc42

	A Phase-resolved View of the Low-frequency Quasiperiodic Oscillations from the Black Hole Binary MAXI J1820+070
	Shui, Qing C.4,5; Zhang, S.5; Zhang, Shuang N.4,5; Chen, Yu P.5; Kong, Ling D.3; Wang, Peng J.4,5; Peng, Jing Q.4,5; Ji, L.2; Santangelo, A.3; Yin, Hong X.7
刊名	ASTROPHYSICAL JOURNAL
	2023-11-01
卷号	957 期号:2
ISSN号	0004-637X
DOI	10.3847/1538-4357/acfc42
产权排序	第10完成单位
文献子类	Article
英文摘要	Although low-frequency quasiperiodic oscillations (LFQPOs) are commonly detected in the X-ray light curves of accreting black hole X-ray binaries, their origin still remains elusive. In this study, we conduct phase-resolved spectroscopy in a broad energy band for LFQPOs in MAXI J1820+070 during its 2018 outburst, utilizing Insight-HXMT observations. By employing the Hilbert-Huang transform method, we extract the intrinsic quasiperiodic oscillation (QPO) variability, and obtain the corresponding instantaneous amplitude, phase, and frequency functions for each data point. With well-defined phases, we construct QPO waveforms and phase-resolved spectra. By comparing the phase-folded waveform with that obtained from the Fourier method, we find that phase folding on the phase of the QPO fundamental frequency leads to a slight reduction in the contribution of the harmonic component. This suggests that the phase difference between QPO harmonics exhibits time variability. Phase-resolved spectral analysis reveals strong concurrent modulations of the spectral index and flux across the bright hard state. The modulation of the spectral index could potentially be explained by both the corona and jet precession models, with the latter requiring efficient acceleration within the jet. Furthermore, significant modulations in the reflection fraction are detected exclusively during the later stages of the bright hard state. These findings provide support for the geometric origin of LFQPOs and offer valuable insights into the evolution of the accretion geometry during the outburst in MAXI J1820+070.
学科主题	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	NASA's Goddard Space Flight Center - China National Space Administration (CNSA); Chinese Academy of Sciences (CAS)[2021YFA0718500]; National Key Ramp;D Program of China[U1838201]; National Key Ramp;D Program of China[U1838202]; National Key Ramp;D Program of China[12173103]; National Key Ramp;D Program of China[U2038101]; National Key Ramp;D Program of China[U1938103]; National Natural Science Foundation of China[113111KYSB20190020]; International Partnership Program of the Chinese Academy of Sciences[57251553]; Sino-German (CSC-DAAD) Postdoc Scholarship Program
WOS关键词	LENS-THIRRING PRECESSION ; X-RAY BINARIES ; INSIGHT-HXMT OBSERVATIONS ; ACCRETION DISKS ; GX 339-4 ; COMPTON REFLECTION ; BACKGROUND MODEL ; PHYSICAL ORIGIN ; 4U 1636-53 ; GAMMA-RAY
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:001092131000001
资助机构	NASA's Goddard Space Flight Center - China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS)[2021YFA0718500] ; National Key Ramp ; D Program of China[U1838201, U1838202, 12173103, U2038101, U1938103] ; National Natural Science Foundation of China[113111KYSB20190020] ; International Partnership Program of the Chinese Academy of Sciences[57251553] ; Sino-German (CSC-DAAD) Postdoc Scholarship Program
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ynao.ac.cn/handle/114a53/26452]
专题	星系类星体研究组
作者单位	1.School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026, People's Republic of China; 2.School of Physics and Astronomy, Sun Yat-Sen University, Zhuhai 519082, People's Republic of China; 3.Institut für Astronomie und Astrophysik, Kepler Center for Astro and Particle Physics, Eberhard Karls, Universität, Sand 1, D-72076 Tübingen, Germany; 4.University of Chinese Academy of Sciences, Chinese Academy of Sciences, 100049 Beijing, People's Republic of China; 5.Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, 100049, Beijing, People's Republic of China; shuiqc@ihep.ac.cn, szhang@ihep.ac.cn, zhangsn@ihep.ac.cn; 6.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China 7.Shandong Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, School of Space Science and Physics, Institute of Space Sciences, Shandong University, Weihai, Shandong 264209, People's Republic of China; 8.Center for Field Theory and Particle Physics and Department of Physics, Fudan University, 200438 Shanghai, People's Republic of China; 9.College of Science, China Three Gorges University, Yichang 443002, People's Republic of China; 10.CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei 230026, People's Republic of China;
推荐引用方式 GB/T 7714	Shui, Qing C.,Zhang, S.,Zhang, Shuang N.,et al. A Phase-resolved View of the Low-frequency Quasiperiodic Oscillations from the Black Hole Binary MAXI J1820+070[J]. ASTROPHYSICAL JOURNAL,2023,957(2).
APA	Shui, Qing C..,Zhang, S..,Zhang, Shuang N..,Chen, Yu P..,Kong, Ling D..,...&颜哲.(2023).A Phase-resolved View of the Low-frequency Quasiperiodic Oscillations from the Black Hole Binary MAXI J1820+070.ASTROPHYSICAL JOURNAL,957(2).
MLA	Shui, Qing C.,et al."A Phase-resolved View of the Low-frequency Quasiperiodic Oscillations from the Black Hole Binary MAXI J1820+070".ASTROPHYSICAL JOURNAL 957.2(2023).