Timing analysis of 2S 1417-624 observed with NICER and Insight-HXMT

doi:10.1093/mnras/stz2745

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.
	2020
Source Publication	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN	0035-8711
EISSN	1365-2966
Volume	491 Issue:2 Pages:1851-1856
Subtype	Article
Abstract	We 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.
Keyword	stars: magnetic field stars: neutron X-rays: binaries X-rays: individual: 2S 1417-624
DOI	10.1093/mnras/stz2745
WOS Keyword	MAGNETIZED NEUTRON-STARS ; ACCRETION LUMINOSITY ; RAY
Indexed By	SCI ; INSPIREHEP
Correlation	强相关
Research Direction	科学结果
Member Type	非核心团队
Language	英语
WOS ID	WOS:000512302100024
ADS Bibcode	2020MNRAS.491.1851J
AXRIV CODE	1910
inspireid	1758252
inspireURL	https://inspirehep.net/literature/1758252
ItemNo	IHEP00030280
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
Identifier	http://ir.ihep.ac.cn/handle/311005/287871
Collection	硬X射线调制望远镜卫星
Recommended Citation 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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