文章基本信息

标题：Fast-time variability in high-mass X-ray binaries: SAX J2103.5+4545
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作者：P. Reig ; A. Slowikowska ; G. Kanbach 等
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2010
卷号：2010
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We present OPTIMA observations of the high-mass X-ray binary SAX J2103.5+4545 covering various orbital phases. Our aim is to investigate the fast optical variability (down to 0.1 s) as a function of the orbital phase in an attempt to search for signatures of the interaction of the neutron star with the Be circumstellar disc. The background and flat-field corrected OPTIMA light curves were used to create power spectra. The spectral continuum is well represented by a power law. We find a correlation between the power-law index and the fractional amplitude of variability with the orbital phase. We speculate that this correlation might be caused by the disruption of the disc by the close passage of the neutron star.