期刊论文

Analysis of the Influence of the Mass Quadrupole Moment of Compact Objects on the Orbital Frequency in the Mass-to-mass Ratio Binary System

中文

天文学进展

1000-8349

2020

38

01

96-105

10.3969/j.issn.1000-8349.2020.01.06

国家自然科学基金（11773059）；

本校为第一机构

极端质量比旋进系统是空间引力波探测器最重要的波源之一。对引力波的探测需要高精度波形模版。当前主流的极端质量比旋进系统引力波计算模型中,人们一般将小质量天体当作试验粒子进行计算,而忽略了其结构及自身引力对背景引力场的影响。利用Mathisson-Papapetrou-Dixon方程研究延展体在弯曲时空中的运动,以及小天体自旋和质量多极矩对引力波信号识别产生的影响。结果表明,质量比在10~(–6)~ 10~(–4)范围的旋进系统,其自旋达到很大时,自旋对延展体的轨道运动有不可忽略的影响;在质量比10~(–4)~ 10~(–2)区间内,需要考虑中心黑洞潮汐作用导致的白矮星形变;在质量比大于10~(–4),且白矮星自旋很...

The extreme mass ratio inspiral system is one of the most important wave sources for space gravitational wave detectors.In gravitational wave detection,a high precision gravity waveform template is required.Many gravitational wave calculation models use test particles as small-mass objects at present,while ignoring the influence of objects structure and its own gravity on the background gravitational field in extreme mass ratio inspiral for gravitational wave detectors.We investigate the motion of the extended body in curved spacetime using the...