IHEP OpenIR  > 硬X射线调制望远镜卫星
Timing analysis of 2S 1417-624 observed with NICER and Insight-HXMT
Ji, L.; Doroshenko, V; Santangelo, A.; Gungor, C.; Zhang, S.; Ducci, L.; Zhang, S-N; Ge, M-Y; Qu, L. J.; Chen, Y. P.; Bu, Q. C.; Cai, C.; Cao, X. L.; Chang, Z.; Chen, G.; Chen, L.; Chen, T. X.; Chen, Y.; Chen, Y. B.; Cui, W.; Cui, W. W.; Deng, J. K.; Dong, Y. W.; Du, Y. Y.; Fu, M. X.; Gao, G. H.; Gao, H.; Gao, M.; Gu, Y. D.; Guan, J.; Guo, C. C.; Han, D. W.; Huang, Y.; Huo, J.; Jia, S. M.; Jiang, L. H.; Jiang, W. C.; Jin, J.; Kong, L. D.; Li, B.; Li, C. K.; Li, G.; Li, M. S.; Li, T. P.; Li, W.; Li, X.; Li, X. B.; Li, X. F.; Li, Y. G.; Li, Z. W.; Liang, X. H.; Liao, J. Y.; Liu, C. Z.; Liu, G. Q.; Liu, H. W.; Liu, X. J.; Liu, Y. N.; Lu, B.; Lu, F. J.; Lu, X. F.; Luo, Q.; Luo, T.; Ma, X.; Meng, B.; Nang, Y.; Nie, J. Y.; Ou, G.; Sai, N.; Song, L. M.; Song, X. Y.; Sun, L.; Tan, Y.; Tao, L.; Tuo, Y. L.; Wang, C.; Wang, G. F.; Wang, J.; Wang, W. S.; Wang, Y. S.; Wen, X. Y.; Wu, B. B.; Wu, B. Y.; Wu, M.; Xiao, G. C.; Xiao, S.; Xiong, S. L.; Xu, Y. P.; Yang, Y. J.; Yang, J. W.; Yang, S.; Yi, Q. B.; Yin, Q. Q.; You, Y.; Zhang, A. M.; Zhang, C. M.; Zhang, F.; Zhang, H. M.; Zhang, J.; Zhang, T.; Zhang, W.; Zhang, W. C.; Zhang, W. Z.; Zhang, Y.; Zhang, Y. F.; Zhang, Y. J.; Zhang, Z.; Zhang, Z. L.; Zhao, H. S.; Zhao, X. F.; Zheng, S. J.; Zhou, D. K.; Zhou, J. F.; Zhu, Y.; Zhu, Y. X.
AbstractWe present a study of timing properties of the accreting pulsar 2S 1417-624 observed during its 2018 outburst, based on Swift/BAT, Fermi/GBM, Insight-HXMT, and NICER observations. We report a dramatic change of the pulse profiles with luminosity. The morphology of the profile in the range 0.2-10.0 keV switches from double to triple peaks at similar to 2.5 x 10(37)D(10)(2) erg s(-1) and from triple to quadruple peaks at similar to 7x10(37)D(10)(2) erg s(-1). The profile at high energies (25-100 keV) shows significant evolutions as well. We explain this phenomenon according to existing theoretical models. We argue that the first change is related to the transition from the sub to the supercritical accretion regime, while the second to the transition of the accretion disc from the gas-dominated to the radiation pressure-dominated state. Considering the spin-up as well due to the accretion torque, this interpretation allows to estimate the magnetic field self-consistently at similar to 7 x 10(12) G.
Keywordstars: magnetic field stars: neutron X-rays: binaries X-rays: individual: 2S 1417-624
Research Direction科学结果
Member Type非核心团队
WOS IDWOS:000512302100024
ADS Bibcode2020MNRAS.491.1851J
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Cited Times:2 [INSPIRE]
Cited Times:3 [ADS]
Document Type期刊论文
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GB/T 7714
Ji, L.,Doroshenko, V,Santangelo, A.,et al. Timing analysis of 2S 1417-624 observed with NICER and Insight-HXMT[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,491(2):1851-1856.
APA Ji, L..,Doroshenko, V.,Santangelo, A..,Gungor, C..,Zhang, S..,...&Zhu, Y. X..(2020).Timing analysis of 2S 1417-624 observed with NICER and Insight-HXMT.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,491(2),1851-1856.
MLA Ji, L.,et al."Timing analysis of 2S 1417-624 observed with NICER and Insight-HXMT".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 491.2(2020):1851-1856.
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