PHASE-RESOLVED SPECTRAL ANALYSIS OF 4U 1901+03 DURING ITS OUTBURST

	PHASE-RESOLVED SPECTRAL ANALYSIS OF 4U 1901+03 DURING ITS OUTBURST
	Lei YJ(雷亚娟); Chen W(陈尉); Qu JL(屈进禄); Song LM(宋黎明); Zhang S(张澍); Lu Y(卢宇); Li TB(李惕碚); Lei, YJ; Chen, W; Qu, JL
刊名	ASTROPHYSICAL JOURNAL
	2009
卷号	707 期号:2 页码:1016-1022
关键词	pulsars: individual (4U 1901+03) stars: neutron X-rays: stars
通讯作者	[Lei, Ya-Juan ; Chen, Wei ; Qu, Jin-Lu ; Song, Li-Ming ; Zhang, Shu ; Lu, Yu ; Li, Ti-Pei] Chinese Acad Sci, Ctr Particle Astrophys, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Zhang, Hao-Tong] Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China ; [Li, Ti-Pei] Tsinghua Univ, Ctr Astrophys, Beijing 100084, Peoples R China
英文摘要	The high-mass X-ray binary 4U 1901+03 is reported to have a pulse profile evolving with the X-ray luminosity and energy during its outburst in 2003 February-July: the pulse peak changed from double to single along with the decreasing luminosity. We have carried out a detailed analysis on the contemporary phase-resolved energy spectrum of 4U 1901+03 as observed by the Rossi X-ray Timing Explorer. We find that the spectra are phase dependent. At the beginning of the outburst, the maximum of the optical depth for Compton scattering is near the major phase peak. During the decay of the outburst, the optical depth has the maximum away from the main peak of the pulse profile. For each observation, Fe K alpha emission line is detected in the phase-resolved spectra, and its flux is constant across the pulse phases. This suggests that the origin of the Fe emission is from the accretion disk, not the surface of the neutron star.
学科主题	Astronomy & Astrophysics
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
原文出处	SCI
语种	英语
WOS记录号	WOS:000272465400016
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/238899]
专题	高能物理研究所_院士高能物理研究所_加速器中心高能物理研究所_粒子天体物理中心高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Lei YJ,Chen W,Qu JL,et al. PHASE-RESOLVED SPECTRAL ANALYSIS OF 4U 1901+03 DURING ITS OUTBURST[J]. ASTROPHYSICAL JOURNAL,2009,707(2):1016-1022.
APA	雷亚娟.,陈尉.,屈进禄.,宋黎明.,张澍.,...&Li, TP.(2009).PHASE-RESOLVED SPECTRAL ANALYSIS OF 4U 1901+03 DURING ITS OUTBURST.ASTROPHYSICAL JOURNAL,707(2),1016-1022.
MLA	雷亚娟,et al."PHASE-RESOLVED SPECTRAL ANALYSIS OF 4U 1901+03 DURING ITS OUTBURST".ASTROPHYSICAL JOURNAL 707.2(2009):1016-1022.