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arXiv 0910.4484astro-ph.HE
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4U 1538-52的基本回旋线

The fundamental cyclotron line in 4U 1538-52

J. J. Rodes-Roca, J. M. Torrejón, J. G. Bernabéu

摘要:

本文给出了高质量X射线脉冲双星4U 1538-52/QV Nor的脉冲相位平均谱。这颗持续吸积脉冲星的观测是用罗西X射线定时探测器(RXTE)完成的。我们研究了该双星系统高能谱中回旋共振散射特征(CRSF或简称回旋线)的变化。我们表明,CRSF的参数是相关的。第一个是,如理论所示,回旋加速器线的宽度和能量之间。第二个是回旋线的相对宽度和光学深度之间的关系。我们讨论了这些结果与其他X射线天体的研究和它们的影响线的变化。

英文摘要:

We present pulse phase averaged spectra of the high mass X-ray binary pulsar 4U 1538-52/QV Nor. Observations of this persistent accreting pulsar were made with the Rossi X-ray Timing Explorer (RXTE). We study the variability of cyclotron resonant scattering feature (CRSF or simply cyclotron line) in the high energy spectra of this binary system. We show that the parameters of the CRSF are correlated. The first one is, as suggested by theory, between the width and the energy of the cyclotron line. The second one is between the relative width and the optical depth of the cyclotron line. We discuss these results with studies of other X-ray pulsars and their implications on the line variability.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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