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

doi:10.1093/mnras/stad614

YNAO OpenIR > 星系类星体研究组

	Timing analysis of EXO 2030+375 during its 2021 giant outburst observed with Insight-HXMT
	Fu, Yu-Cong 1,2,3; Song, L M 2,3; Ding, G Q 1; Ge, M Y 3; Tuo, Y L 3; Zhang, S 3; Zhang, S N 3; Hou X(侯贤)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 QX(赵庆霞)2,3,4 ; Xiao, Y X 2,3
发表期刊	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2023-03-02
卷号	521 期号:1 页码:893-901
DOI	10.1093/mnras/stad614
产权排序	第4完成单位
收录类别	SCI ; EI
关键词	accretion,accretion discs stars:magnetic field pulsars:individual (EXO 2030+375) X-rays:binaries
摘要	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.
资助项目	National Natural Science Foundation of China[11673023] ; National Natural Science Foundation of China[11733009] ; National Natural Science Foundation of China[12273100] ; National Natural Science Foundation of China[U1838108] ; National Natural Science Foundation of China[U1838201] ; National Natural Science Foundation of China[U1838202] ; National Natural Science Foundation of China[U1938102] ; National Natural Science Foundation of China[U2031205] ; National Natural Science Foundation of China[U2038104]
项目资助者	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, U1838201, U2038104, Y7515570U1, 12273100, 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]
语种	英语
学科领域	天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学
文章类型	Article
出版者	OXFORD UNIV PRESS
出版地	GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN	0035-8711
URL	查看原文
WOS记录号	WOS:000961957300002
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	MAGNETIC NEUTRON-STARS ; PULSAR 4U 0115+63 ; X-RAY TELESCOPE ; SWIFT J0243.6+6124 ; BACKGROUND MODEL ; SMC X-3 ; SPIN-UP ; ACCRETION ; ENERGY ; LUMINOSITY
EI入藏号	20232314200440
EI主题词	Luminance
EI分类号	657.2 Extraterrestrial Physics and Stellar Phenomena - 701.2 Magnetism: Basic Concepts and Phenomena - 713.4 Pulse Circuits
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.ynao.ac.cn/handle/114a53/26071
专题	星系类星体研究组中国科学院天体结构与演化重点实验室
作者单位	1.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China; 2.University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, China; 3.Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; 4.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China; 5.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China; 6.Institut für Astronomie und Astrophysik, Kepler Center for Astro and Particle Physics, Eberhard Karls Universität, Sand 1, D-72076 Tübingen, Germany; 7.Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing 210008, China; 8.Xinjiang Key Laboratory of Radio Astrophysics, Urumqi 830011, China
推荐引用方式 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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