Improved gravitational radiation time-scales II: Spin-orbit contributions and environmental perturbations

doi:10.1093/mnras/stab1818

CSpace

	Improved gravitational radiation time-scales II: Spin-orbit contributions and environmental perturbations
	Zwick, Lorenz 1; Capelo, Pedro R.1; Bortolas, Elisa 1,2; Vazquez-Aceves, Veronica 3; Mayer, Lucio 1; Amaro-Seoane, Pau 3,4,5,6,7
	2021-09-01
发表期刊	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN	0035-8711
卷号	506 期号:1 页码:1007-1018
摘要	Peters' formula is an analytical estimate of the time-scale of gravitational wave (GW)-induced coalescence of binary systems. It is used in countless applications, where the convenience of a simple formula outweighs the need for precision. However, many promising sources of the Laser Interferometer Space Antenna (LISA), such as supermassive black hole binaries and extreme mass-ratio inspirals (EMRIs), are expected to enter the LISA band with highly eccentric (e greater than or similar to 0.9) and highly relativistic orbits. These are exactly the two limits in which Peters' estimate performs the worst. In this work, we expand upon previous results and give simple analytical fits to quantify how the inspiral time-scale is affected by the relative 1.5 post-Newtonian (PN) hereditary fluxes and spin-orbit couplings. We discuss several cases that demand a more accurate GW time-scale. We show how this can have a major influence on quantities that are relevant for LISA event-rate estimates, such as the EMRI critical semimajor axis. We further discuss two types of environmental perturbations that can play a role in the inspiral phase: the gravitational interaction with a third massive body and the energy loss due to dynamical friction and torques from a surrounding gas medium ubiquitous in galactic nuclei. With the aid of PN corrections to the time-scale in vacuum, we find simple analytical expressions for the regions of phase space in which environmental perturbations are of comparable strength to the effects of any particular PN order, being able to qualitatively reproduce the results of much more sophisticated analyses.
关键词	black hole physics gravitational waves methods: analytical
DOI	10.1093/mnras/stab1818
收录类别	SCI
语种	英语
资助项目	Swiss National Science Foundation[200020_178949] ; European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program ERC-2018-COG[818691] ; Ramon y Cajal Programme of the Ministry of Economy, Industry and Competitiveness of Spain ; COST Action GWverse[CA16104] ; National Key R&D Program of China[2016YFA0400702] ; National Science Foundation of China[11721303]
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
WOS记录号	WOS:000703918800066
出版者	OXFORD UNIV PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/59366
专题	中国科学院数学与系统科学研究院
通讯作者	Zwick, Lorenz
作者单位	1.Univ Zurich, Ctr Theoret Astrophys & Cosmol, Inst Computat Sci, Winterthurerstr 190, CH-8057 Zurich, Switzerland 2.Univ Milano Bicocca, Dipartimento Fis G Occhialini, Piazza Sci 3, I-20126 Milan, Italy 3.Chinese Acad Sci, Acad Math & Syst Sci, Inst Appl Math, Beijing 100190, Peoples R China 4.Univ Politecn Valencia, IGIC, Cami Vera S-N, Valencia 46022, Spain 5.Deutsch Elektronen Synchrotron DESY, Platanenallee 6, D-15738 Zeuthen, Germany 6.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China 7.TU Berlin, Zentrum Astron & Astrophys, Hardenbergstr 36, D-10623 BER Berlin, Germany
推荐引用方式 GB/T 7714	Zwick, Lorenz,Capelo, Pedro R.,Bortolas, Elisa,et al. Improved gravitational radiation time-scales II: Spin-orbit contributions and environmental perturbations[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,506(1):1007-1018.
APA	Zwick, Lorenz,Capelo, Pedro R.,Bortolas, Elisa,Vazquez-Aceves, Veronica,Mayer, Lucio,&Amaro-Seoane, Pau.(2021).Improved gravitational radiation time-scales II: Spin-orbit contributions and environmental perturbations.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,506(1),1007-1018.
MLA	Zwick, Lorenz,et al."Improved gravitational radiation time-scales II: Spin-orbit contributions and environmental perturbations".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 506.1(2021):1007-1018.