Superorbital phase-resolved analysis of SMC X-1

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/101032

Title:	Superorbital phase-resolved analysis of SMC X-1
Authors:	周翊;Hu, Chin-Ping;Chou, Yi;Yang, Ting-Chang;Su, Yi-Hao
Contributors:	理學院天文研究所
Keywords:	ACCRETION DISKS;Arrays;ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;BINARY STARS;Flux;FREQUENCY ANALYSIS;IRON;Line of sight;MODULATION;Orbitals;ORBITS;PLASMA;PROPORTIONAL COUNTERS;Spectra;VISIBLE RADIATION;WIDTH;X-RAY EMISSION ANALYSIS;X-RAY SPECTRA;X-rays
Date:	2013-08-10
Issue Date:	2026-04-21 14:21:43 (UTC+8)
Publisher:	IOP Publishing Ltd.;United States: American Astronomical Society
Abstract:	摘要： The high-mass X-ray binary SMC X-l is an eclipsing binary with an orbital period of 3.89 days. This system exhibits a superorbital modulation with a period varying between ~40 days and ~65 days. We present a phase-resolved analysis of both the spectra and the orbital profiles with the superorbital phase derived from the HHT. The X-ray spectra observed by the Proportional Counter Array on board the Rossi X-ray Timing Explorer are fitted well by a blackbody plus a Comptonized component. The plasma optical depth, which is a good indicator of the distribution of material along the line of sight, is significantly anti-correlated with the flux detected at 2.5-25 keV. This indicates that the accretion disk has a bulge that absorbs considerable X-ray emission in the stream-disk interaction region. The dip width is anti-correlated with the flux, and this relation can be interpreted by the precessing tilted accretion disk scenario. 出版者： United States: American Astronomical Society 出版日期： 2013-08-10 出處： The Astrophysical Journal, 2013-08, Vol.773 (1), p.58--8 資源來源： IoP Science journals 識別號： ISSN: 0004-637X 識別號： ISSN: 1538-4357 識別號： EISSN: 1538-4357 識別號： DOI: 10.1088/0004-637x/773/1/58
Appears in Collections:	[Graduate Institute of Astronomy] journal & Dissertation

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