NAOC Open IR
Switches between accretion structures during flares in 4U 1901+03
Ji, L.1; Ducci, L.1,2; Santangelo, A.1,3; Zhang, S.3; Suleimanov, V1,4,5; Tsygankov, S.5,6; Doroshenko, V1,5; Nabizadeh, A.6; Zhang, S. N.3,7; Ge, M. Y.3; Tao, L.3; Bu, Q. C.1,3; Qu, J. L.3; Lu, F. J.3; Chen, L.8; Song, L. M.3,7; Li, T. P.3,7,9; Xu, Y. P.3,7; Cao, X. L.3; Chen, Y.3; Liu, C. Z.3; Cai, C.3,7; Chang, Z.3; Chen, G.3; Chen, T. X.3; Chen, Y. B.10; Chen, Y. P.3; Cui, W.9; Cui, W. W.3; Deng, J. K.10; Dong, Y. W.3; Du, Y. Y.3; Fu, M. X.10; Gao, G. H.3,7; Gao, H.3,7; Gao, M.3; Gu, Y. D.3; Guan, J.3; Guo, C. C.3,7; Han, D. W.3; Huang, Y.3,7; Huo, J.3; Jia, S. M.3; Jiang, L. H.3; Jiang, W. C.3; Jin, J.3; Jin, Y. J.11; Kong, L. D.3,7; Li, B.3; Li, C. K.3; Li, G.3; Li, M. S.3; Li, W.3; Li, X.3; Li, X. B.3; Li, X. F.3; Li, Y. G.3; Li, Z. W.3; Liang, X. H.3; Liao, J. Y.3; Liu, B. S.3; Liu, G. Q.10; Liu, H. X.3,7; Liu, H. W.3; Liu, X. J.3; Liu, Y. N.11; Lu, B.3; Lu, X. F.3; Luo, Q.3,7; Luo, T.3; Ma, X.3; Meng, B.3; Nang, Y.3,7; Nie, J. Y.3; Ou, G.3; Sai, N.3,7; Shang, R. C.10; Song, X. Y.3; Sun, L.3; Tan, Y.3; Tuo, Y. L.3,7; Wang, C.7,12; Wang, G. F.3; Wang, J.3; Wang, P. J.3,7; Wang, W. S.3; Wang, Y. S.3; Wen, X. Y.3; Wu, B. Y.3,7; Wu, B. B.3; Wu, M.3; Xiao, G. C.3,7; Xiao, S.3,7; Xiong, S. L.3; Xu, H.3; Yang, J. W.3; Yang, S.3; Yang, Yan-Ji3; Yang, Yi-Jung3; Yi, Q. B.3,13; Yin, Q. Q.3; You, Y.3,7; Zhang, A. M.3; Zhang, C. M.3; Zhang, F.3; Zhang, H. M.3; Zhang, J.3; Zhang, P.3; Zhang, T.3; Zhang, W.3,7; Zhang, W. C.3; Zhang, W. Z.8; Zhang, Yi3; Zhang, Y. F.3; Zhang, Y. J.3; Zhang, Y. H.3,7; Zhang, Yue3,7; Zhang, Zhao10; Zhang, Zhi11; Zhang, Z. L.3; Zhao, H. S.3; Zhao, X. F.3,7; Zheng, S. J.3; Zhou, D. K.3,7; Zhou, J. F.11; Zhu, Y. X.3,14; Zhu, Y.3; Zhuang, R. L.11
2020-04-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume493Issue:4Pages:5680-5692
AbstractWe report on our analysis of the 2019 outburst of the X-ray accreting pulsar 4U 1901+03 observed with Insight-HXMT and NICER. Both spectra and pulse profiles evolve significantly in the decaying phase of the outburst. Dozens of flares are observed throughout the outburst. They are more frequent and brighter at the outburst peak. We find that the flares, which have a duration from tens to hundreds of seconds, are generally brighter than the persistent emission by a factor of similar to 1.5. The pulse-profile shape during the flares can be significantly different from that of the persistent emission. In particular, a phase shift is clearly observed in many cases. We interpret these findings as direct evidence of changes of the pulsed beam pattern, due to transitions between the sub- and supercritical accretion regimes on a short time-scale. We also observe that at comparable luminosities the flares' pulse profiles are rather similar to those of the persistent emission. This indicates that the accretion on the polar cap of the neutron star is mainly determined by the luminosity, i.e. the mass accretion rate.
Keywordstars: neutron X-rays: binaries X-rays: individual: 4U 1901+03
Funding OrganizationChina National Space Administration (CNSA) ; China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Program on Key Research and Development Project from the Minister of Science and Technology of China (MOST) ; National Program on Key Research and Development Project from the Minister of Science and Technology of China (MOST) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; German Academic Exchange Service (DAAD) ; German Academic Exchange Service (DAAD) ; Russian Science Foundation ; Russian Science Foundation ; Deutsche Forschungsgemeinschaft (DFG) ; Deutsche Forschungsgemeinschaft (DFG) ; China National Space Administration (CNSA) ; China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Program on Key Research and Development Project from the Minister of Science and Technology of China (MOST) ; National Program on Key Research and Development Project from the Minister of Science and Technology of China (MOST) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; German Academic Exchange Service (DAAD) ; German Academic Exchange Service (DAAD) ; Russian Science Foundation ; Russian Science Foundation ; Deutsche Forschungsgemeinschaft (DFG) ; Deutsche Forschungsgemeinschaft (DFG) ; China National Space Administration (CNSA) ; China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Program on Key Research and Development Project from the Minister of Science and Technology of China (MOST) ; National Program on Key Research and Development Project from the Minister of Science and Technology of China (MOST) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; German Academic Exchange Service (DAAD) ; German Academic Exchange Service (DAAD) ; Russian Science Foundation ; Russian Science Foundation ; Deutsche Forschungsgemeinschaft (DFG) ; Deutsche Forschungsgemeinschaft (DFG) ; China National Space Administration (CNSA) ; China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Program on Key Research and Development Project from the Minister of Science and Technology of China (MOST) ; National Program on Key Research and Development Project from the Minister of Science and Technology of China (MOST) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; German Academic Exchange Service (DAAD) ; German Academic Exchange Service (DAAD) ; Russian Science Foundation ; Russian Science Foundation ; Deutsche Forschungsgemeinschaft (DFG) ; Deutsche Forschungsgemeinschaft (DFG)
DOI10.1093/mnras/staa569
WOS KeywordRAY PULSAR PROFILES ; LUMINOSITY DEPENDENCE ; GEOMETRY ; BURSTS ; PHASE ; X-4
Language英语
Funding ProjectChina National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; National Program on Key Research and Development Project from the Minister of Science and Technology of China (MOST)[2016YFA0400800] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB23040400] ; National Natural Science Foundation of China[11503027] ; National Natural Science Foundation of China[11673023] ; National Natural Science Foundation of China[11733009] ; National Natural Science Foundation of China[U1838201] ; National Natural Science Foundation of China[U1838202] ; National Natural Science Foundation of China[U1938103] ; German Academic Exchange Service (DAAD)[57405000] ; Russian Science Foundation[19-12-00423] ; Deutsche Forschungsgemeinschaft (DFG)[WE1312/51-1]
Funding OrganizationChina National Space Administration (CNSA) ; China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Program on Key Research and Development Project from the Minister of Science and Technology of China (MOST) ; National Program on Key Research and Development Project from the Minister of Science and Technology of China (MOST) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; German Academic Exchange Service (DAAD) ; German Academic Exchange Service (DAAD) ; Russian Science Foundation ; Russian Science Foundation ; Deutsche Forschungsgemeinschaft (DFG) ; Deutsche Forschungsgemeinschaft (DFG) ; China National Space Administration (CNSA) ; China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Program on Key Research and Development Project from the Minister of Science and Technology of China (MOST) ; National Program on Key Research and Development Project from the Minister of Science and Technology of China (MOST) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; German Academic Exchange Service (DAAD) ; German Academic Exchange Service (DAAD) ; Russian Science Foundation ; Russian Science Foundation ; Deutsche Forschungsgemeinschaft (DFG) ; Deutsche Forschungsgemeinschaft (DFG) ; China National Space Administration (CNSA) ; China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Program on Key Research and Development Project from the Minister of Science and Technology of China (MOST) ; National Program on Key Research and Development Project from the Minister of Science and Technology of China (MOST) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; German Academic Exchange Service (DAAD) ; German Academic Exchange Service (DAAD) ; Russian Science Foundation ; Russian Science Foundation ; Deutsche Forschungsgemeinschaft (DFG) ; Deutsche Forschungsgemeinschaft (DFG) ; China National Space Administration (CNSA) ; China National Space Administration (CNSA) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Program on Key Research and Development Project from the Minister of Science and Technology of China (MOST) ; National Program on Key Research and Development Project from the Minister of Science and Technology of China (MOST) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; German Academic Exchange Service (DAAD) ; German Academic Exchange Service (DAAD) ; Russian Science Foundation ; Russian Science Foundation ; Deutsche Forschungsgemeinschaft (DFG) ; Deutsche Forschungsgemeinschaft (DFG)
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000539094400082
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/83068
Collection中国科学院国家天文台
Corresponding AuthorJi, L.
Affiliation1.Eberhard Karls Univ Tubingen, Kepler Ctr Astro & Particle Phys, Inst Astron & Astrophys, Sand 1, D-72076 Tubingen, Germany
2.Univ Geneva, ISDC Data Ctr Astrophys, Chemin Ecogia 16, CH-1290 Versoix, Switzerland
3.Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China
4.Kazan Volga Reg Fed Univ, Kremlevskaya Str 18, Kazan 42008, Russia
5.Russian Acad Sci, Space Res Inst, Profsoyuznaya Str 84-32, Moscow 117997, Russia
6.Univ Turku, Dept Phys & Astron, FI-20014 Turku, Finland
7.Chinese Acad Sci, Univ Chinese Acad Sci, Beijing 100049, Peoples R China
8.Beijing Normal Univ, Dept Astron, Beijing 100088, Peoples R China
9.Tsinghua Univ, Dept Astron, Beijing 100084, Peoples R China
10.Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
11.Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China
12.Chinese Acad Sci, Natl Astron Observ, Key Lab Space Astron & Technol, Beijing 100012, Peoples R China
13.Xiangtan Univ, Sch Phys & Optoelect, Xiangtan 411105, Hunan, Peoples R China
14.Jilin Univ, Coll Phys, 2699 Qianjin St, Changchun 130012, Peoples R China
Recommended Citation
GB/T 7714
Ji, L.,Ducci, L.,Santangelo, A.,et al. Switches between accretion structures during flares in 4U 1901+03[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,493(4):5680-5692.
APA Ji, L..,Ducci, L..,Santangelo, A..,Zhang, S..,Suleimanov, V.,...&Zhuang, R. L..(2020).Switches between accretion structures during flares in 4U 1901+03.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,493(4),5680-5692.
MLA Ji, L.,et al."Switches between accretion structures during flares in 4U 1901+03".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 493.4(2020):5680-5692.
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