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The gravitational wave source of extreme-mass-ratio insprials and its detection
- Acta Scientiarum Naturalium Universitatis Sunyatseni Vol. 60, Issue 1, Pages: 31-40(2021)
- 作者机构：
1.华中科技大学引力中心，湖北 武汉 430074
2.天琴计划”教育部重点实验室，中山大学天琴中心 & 物理与天文学院，天琴前沿科学中心， 国家航天局引力波研究中心，广东 珠海 519082
- 作者简介：
- 基金信息：
DOI：10.13471/j.cnki.acta.snus.2020.11.05.2020B116
CLC： P142.9Published：25 January 2021，
Published Online：14 January 2021，
Received：05 November 2020，
Accepted：13 November 2020
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范会敏,胡一鸣,訾铁光.极端质量比旋近及其探测[J].中山大学学报(自然科学版),2021,60(01):31-40.
FAN Huimin,HU Yiming,ZI Tieguang.The gravitational wave source of extreme-mass-ratio insprials and its detection[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2021,60(01):31-40.
范会敏,胡一鸣,訾铁光.极端质量比旋近及其探测[J].中山大学学报(自然科学版),2021,60(01):31-40. DOI： 10.13471/j.cnki.acta.snus.2020.11.05.2020B116.
FAN Huimin,HU Yiming,ZI Tieguang.The gravitational wave source of extreme-mass-ratio insprials and its detection[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2021,60(01):31-40. DOI： 10.13471/j.cnki.acta.snus.2020.11.05.2020B116.
摘要
极端质量比旋近（EMRI）是指由恒星级质量天体与大质量黑洞组成的双星系统。它们在科学上具有着极高的价值，可以用来检验广义相对论以及探索黑洞的本质。本文描述EMRIs的形成图景、科学意义以及研究现状，通过计算天琴对EMRIs的探测视界距离、探测率和参数估计精度，获得了天琴对EMRIs的探测能力。我们发现：天琴可探测到红移
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处的EMRI引力波源，在乐观天文学模型下，天琴每年可探测到几十到上百个EMRIs事件，天琴对EMRI内禀参数估计精度可达到
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量级，对光度距离的估计精度可达约
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，对空间方位的定位精度可达约
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天琴对EMRI的观测还可以对黑洞四极矩进行限制，限制能力达到
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Abstract
Extreme-mass-ratio inspirals are systems consisting of a massive black hole （MBH） and a stellar-origin compact object （CO）. It has great scientific significance， such as testing general relativity and exploring the black hole nature. In this paper， we describe the formation picture， the scientific value， and the current research of EMRIs，and through calculating the EMRI rate and parameter estimation， we get the detectability of TianQin on EMRIs. We find that TianQin can observe EMRIs up to redshift
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. We also find that EMRI detections could reach tens or hundreds per year in the most optimistic astrophysical scenarios. Intrinsic parameters are expected to be recovered to within fractional errors of
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9.31333351
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， while typical errors on the luminosity distance and sky localization are 10% and 10
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respectively. EMRIs can also be used to constrain possible deviations from the Kerr quadrupole moment to within fractional errors
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.
关键词
极端质量比旋近天琴无毛定理
Keywords
extreme-mass-ratio inspiralsTianQinno-hair theorem
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