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

文献类型：期刊论文

作者Fu, Yu-Cong3,4,5; Song, L M3,4; Ding, G Q5; Ge, M Y3; Tuo, Y L3; Zhang, S3; Zhang, S N3; Hou X(侯贤)2,6; Qu, J L3; Zhang, J3
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2023-03-02
卷号521期号:1页码:893-901
ISSN号0035-8711
关键词accretion,accretion discs stars:magnetic field pulsars:individual (EXO 2030+375) X-rays:binaries
DOI10.1093/mnras/stad614
产权排序第4完成单位
文献子类Article
英文摘要

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.

学科主题天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学
URL标识查看原文
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
WOS关键词MAGNETIC NEUTRON-STARS ; PULSAR 4U 0115+63 ; X-RAY TELESCOPE ; SWIFT J0243.6+6124 ; BACKGROUND MODEL ; SMC X-3 ; SPIN-UP ; ACCRETION ; ENERGY ; LUMINOSITY
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]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者OXFORD UNIV PRESS
WOS记录号WOS:000961957300002
资助机构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]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/26071]  
专题星系类星体研究组
云南天文台_中国科学院天体结构与演化重点实验室
作者单位1.Institut für Astronomie und Astrophysik, Kepler Center for Astro and Particle Physics, Eberhard Karls Universität, Sand 1, D-72076 Tübingen, Germany;
2.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China;
3.Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;
4.University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, China;
5.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China;
6.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China;
7.Xinjiang Key Laboratory of Radio Astrophysics, Urumqi 830011, China
8.Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing 210008, 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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来源：云南天文台

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