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arXiv 1302.2090astro-ph.HE
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4U 1538-52中2.1 keV吸收特性的物理意义

On the physical meaning of the 2.1 keV absorption feature in 4U 1538-52

J. J. Rodes Roca, J. M. Torrejón, S. Martínez-Núñez, G. Bernabéu

摘要:

目前X射线天文台,如钱德拉或XMM-牛顿,能力的提高,提供了探测吸收线和发射线的可能性,并研究X射线双星中中子星周围物质的性质和产生这些线的现象。这项工作的目的是讨论不同的物理方案,以解释的意义,显着的吸收功能,目前在X射线光谱的4U 1538-52。使用最后可用的校准,我们放弃了这种功能是由于校准,增益效应或由X射线背景或尘埃区域产生的可能性。考虑到XMM-牛顿望远镜的能量分辨率,我们无法确定这条线是在中子星的大气中形成的,还是由光学对应物的恒星风的色散形成的。

英文摘要:

The improvement of the capabilities of nowadays X-ray observatories, like Chandra or XMM-Newton, offers the possibility to detect both absorption and emission lines and to study the nature of the matter surrounding the neutron star in X-ray binaries and the phenomena that produce these lines. The aim of this work is to discuss the different physical scenarios in order to explain the meaning of the significant absorption feature present in the X-ray spectrum of 4U 1538-52. Using the last available calibrations, we discard the possibility that this feature is due to calibration, gain effects or be produced by the X-ray background or a dust region. Giving the energy resolution of the XMM-Newton telescope we could not establish if the line is formed in the atmosphere of the neutron star or by the dispersion of the stellar wind of the optical counterpart.

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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