中子星的binding energies在吸积驱动演化中的作用
The role of binding energies of neutron stars on the accretion driven evolution
摘要：
毫秒双星被认为是由低质量的x射线双星演化而来。利用脉冲星质量、伴星质量、脉冲星自转周期、轨道周期、轨道偏心率等毫秒双星的可观测参数来研究毫秒双星过去的吸积历史。但遗憾的是，在这些研究中，中子星的结合能并没有被普遍考虑。我们表明，结合能的影响是显着的质量吸积量的估计，因此应纳入模型的二进制演变。此外，对于中子星的引力质量增加相同的量，不同的致密物质状态方程给出不同的吸积质量值，这意味着需要约束致密物质状态方程，甚至要正确理解自旋过程。
英文摘要：
Millisecond pulsars are believed to descend from low mass x-ray binaries. Observable parameters of binary millisecond pulsars e.g. mass of the pulsar, mass of the companion, spin period of the pulsar, orbital period, orbital eccentricity etc are used to probe the past accretion history of the millisecond pulsars. But unfortunately in these studies, binding energy of the neutron star is not considered commonly. We show that the effect of the binding energy is significant in the estimation of the amount of mass accretion and thus should be incorporated in models for binary evolutions. Moreover, different Equations of State for dense matter give different values for the accreted mass for the same amount of increase in the gravitational mass of the neutron star implying the need of constraining dense matter Equations of State even to understand the spin-up procedure properly.
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