Timing analysis of EXO 2030+375 during its 2021 giant outburst observed with Insight-HXMT

doi:10.1093/mnras/stad614

XAO OpenIR

	Timing analysis of EXO 2030+375 during its 2021 giant outburst observed with Insight-HXMT
	Fu, Yu-Cong1,2,3 ; Song, L. M.1,2,3; Ding, G. Q.1 ; Ge, M. Y.3; Tuo, Y. L.3; Zhang, S.3; Zhang, S. N.; Hou, X.4,5; Qu, J. L.3; Zhang, J.3; Zhang, L.3; Bu, Q. C.6; Huang, Y.3; Ma, X.3; Zhou, X.1,7,8 ; Yan, W. M.1,7,8 ; Yang, Z. X.2,3; Lu, X. F.2,3; Li, T. M.2,3; Xu, Y. C.2,3; Wang, P. J.2,3; Xiao, S. H.1,2,3; Liu, H. X.2,3; Ren, X. Q.2,3; Du, Y. F.2,3; Zhao, Q. X.2,3,4; Xiao, Y. X.2,3
	2023-03-02
Source Publication	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN	0035-8711
Volume	521 Issue:1 Pages:893-901
Contribution Rank	1
Abstract	We report the evolution of the X-ray pulsations of EXO 2030+375 during its 2021 outburst using the observations from Insight-HXMT. Based on the accretion torque model, we study the correlation between the spin frequency derivatives and the luminosity. Pulsations can be detected in the energy band of 1-160 keV. The pulse profile evolves significantly with luminosity during the outburst, leading to that the whole outburst can be divided into several parts with different characteristics. The evolution of the pulse profile reveals the transition between the supercritical (fan-beam dominated) and the subcritical accretion (pencil-beam dominated) mode. From the accretion torque model and the critical luminosity model, based on a distance of 7.1 kpc, the inferred magnetic fields are (0.41 - 0.74) x 10(12) and (3.48 - 3.96) x 10(12) G, respectively, or based on a distance of 3.6 kpc, the estimated magnetic fields are (2.4 - 4.3) x 10(13) and (0.98 - 1.11) x 10(12) G, respectively. Two different sets of magnetic fields both support the presence of multipole magnetic fields of the neutron star.
Keyword	accretion,accretion discs stars:magnetic field pulsars:individual (EXO 2030+375) X-rays:binaries
DOI	10.1093/mnras/stad614
Indexed By	SCI
Language	英语
WOS Keyword	MAGNETIC NEUTRON-STARS ; PULSAR 4U 0115+63 ; X-RAY TELESCOPE ; SWIFT J0243.6+6124 ; BACKGROUND MODEL ; SMC X-3 ; SPIN-UP ; ACCRETION ; ENERGY ; LUMINOSITY
Funding Project	China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; National Key Research and Development Program of China[2021YFA0718500] ; Opening Foundation of Xinjiang Key Laboratory[2021D0416] ; Open Program of the Key Laboratory of Xinjiang Uygur Autonomous Region[2020D04049] ; National Natural Science Foundation of China (NSFC)[U1838108] ; National Natural Science Foundation of China (NSFC)[U1838201] ; National Natural Science Foundation of China (NSFC)[U2038104] ; National Natural Science Foundation of China (NSFC)[Y7515570U1] ; National Natural Science Foundation of China (NSFC)[12273100] ; National Natural Science Foundation of China (NSFC)[U2031205] ; CAS Pioneer Hundred Talent Program ; Scientific and Technological innovation project of IHEP[11733009] ; International Partnership Program of Chinese Academy of Sciences[11673023] ; [U1938102] ; [113111KYSB20190020]
WOS Research Area	Astronomy & Astrophysics
WOS Subject	Astronomy & Astrophysics
WOS ID	WOS:000961957300002
Publisher	OXFORD UNIV PRESS
Funding Organization	China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; National Key Research and Development Program of China ; Opening Foundation of Xinjiang Key Laboratory ; Open Program of the Key Laboratory of Xinjiang Uygur Autonomous Region ; National Natural Science Foundation of China (NSFC) ; CAS Pioneer Hundred Talent Program ; Scientific and Technological innovation project of IHEP ; International Partnership Program of Chinese Academy of Sciences
Citation statistics	Cited Times:12[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.xao.ac.cn/handle/45760611-7/5481
Collection	中国科学院新疆天文台射电天文研究室_脉冲星研究团组
Corresponding Author	Fu, Yu-Cong; Song, L. M.; Ding, G. Q.
Affiliation	1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China 2.Univ Chinese Acad Sci, Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Yunnan Observ, Kunming 650216, Peoples R China 5.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650216, Peoples R China 6.Eberhard Karls Univ Tubingen, Inst Astron & Astrophys, Kepler Ctr Astro & Particle Phys, Sand 1, D-72076 Tubingen, Germany 7.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China 8.Xinjiang Key Lab Radio Astrophys, Urumqi 830011, Peoples R China
First Author Affilication	Xinjiang Astronomical Observatory, Chinese Academy of Sciences
Corresponding Author Affilication	Xinjiang Astronomical Observatory, Chinese Academy of Sciences
Recommended Citation GB/T 7714	Fu, Yu-Cong,Song, L. M.,Ding, G. Q.,et al. Timing analysis of EXO 2030+375 during its 2021 giant outburst observed with Insight-HXMT[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2023,521(1):893-901.
APA	Fu, Yu-Cong.,Song, L. M..,Ding, G. Q..,Ge, M. Y..,Tuo, Y. L..,...&Xiao, Y. X..(2023).Timing analysis of EXO 2030+375 during its 2021 giant outburst observed with Insight-HXMT.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,521(1),893-901.
MLA	Fu, Yu-Cong,et al."Timing analysis of EXO 2030+375 during its 2021 giant outburst observed with Insight-HXMT".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 521.1(2023):893-901.

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