利用高质量X射线双星光度位移关系限制踢出速度参量
首发时间:2014-02-28
摘要:空间位移是研究X射线双星运动学的有力手段。利用高质量X射线双星的光度位移关系,本文对踢出速度参量$sigma_{m kick}$做出了限制。本文发现黑洞并不一定需要获得踢出速度才能拟合观测的光度位移关系。更为有趣的是,近期Repetto等人提出的新生黑洞也许获得与中子星一样的原初速度在本文中似乎被排除。
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Constraining the Natal Kicks from Luminosity versus Displacement Correlation of High Mass X-ray Binaries
Abstract:Spatial offset is a powerful way to study the kinetics of X-ray binaries. Using the luminosity versus displacement ($L_{m X}$ vs. $R$) distribution of high mass X-ray binaries, this work makes constraints on the natal kick parameter $sigma_{m kick}$. This study shows that BH natal kicks are not indispensable to account for the $L_{m X}$ vs. $R$ distributions. And more interesting, full BH natal kicks (i.e., similar to that of NSs may receive) are likely to be ruled out in this study, which is in contrast with the finding recently proposed by Repetto et al.
Keywords: Astrophysics stars evolution X-ray binaries
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No.4586365957374139****
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