小质量X射线双星中中子星自转演化的研究

发布时间：2018-04-12 15:54

本文选题：吸积 + 恒星　；参考：《天文学报》2016年06期

【摘要】：为解释毫秒脉冲星自转周期的观测数据和理论结果之间的差异,采用数值分析的方法研究了小质量X射线双星中中子星的自转演化.在计算中,分别考虑了辐射压和中子星辐照引起的物质交流的不稳定性对系统的影响.结果如下:(1)吸积盘内的辐射压会使自转周期有小幅增加,中子星辐照导致的物质传输率的变化会缩短演化路径中自转减慢的阶段;(2)同时考虑辐射压和中子星辐照时在物质传输的高态阶段吸积会被辐射压抑制;(3)吸积的质量和快参数影响达到自转平衡的系统数目.
[Abstract]:In order to explain the difference between the observed data and theoretical results of the rotation period of millisecond pulsars, the rotation evolution of neutron stars in small mass X-ray binary stars is studied by numerical analysis.In the calculation, the effects of radiation pressure and the instability of mass exchange caused by neutron star irradiation on the system are considered respectively.The result is as follows: 1) the radiation pressure in the accretion disk increases the rotation period slightly.The variation of mass transmission rate induced by neutron star irradiation will shorten the phase of slow rotation in the evolution path) and take into account the radiation pressure and the accretion at the high state of the neutron star irradiation will be suppressed by the radiation pressure.Quantities and fast parameters affect the number of systems that achieve rotation balance.
【作者单位】：南京大学天文与空间科学学院;
【基金】：国家级大学生创新创业训练计划项目(G1410284092)资助
【分类号】：P145.6;P172.2

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