Gravitational waves in scalar-tensor theory to one-and-a-half post-Newtonian order

被引：31

作者：

Bernard, Laura ^{[1
]}

Blanchetb, Luc ^{[2
]}

Trestinia, David ^{[1
,2
]}

机构：

[1] Univ Paris, Univ PSL, Lab Univ & Theories, CNRS,Observ Paris, F-92190 Meudon, France

[2] Sorbonne Univ, Inst Astrophys Paris,CNRS, GReCO, UMR 7095, 98bis Blvd Arago, F-75014 Paris, France

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2022年 / 08期

关键词：

Gravitational waves in GR and beyond: theory; gravitational waves / theory; modified gravity; Gauss-Bonnet-Lovelock-Horndeski-Palatini etc gravity theories; GENERAL-RELATIVITY; BINARY-SYSTEMS; FIELD; GRAVITY; RADIATION; MEMORY; FORMS;

D O I：

10.1088/1475-7516/2022/08/008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We compute the gravitational waves generated by compact binary systems in a class of massless scalar-tensor (ST) theories to the 1.5 post-Newtonian (1.5PN) order beyond the standard quadrupole radiation in general relativity (GR). Using and adapting to ST theories the multipolar-post-Minkowskian and post-Newtonian formalisms originally defined in GR, we obtain the tail and non-linear memory terms associated with the dipole radiation in ST theory. The multipole moments and GW flux of compact binaries are derived for general orbits including the new 1.5PN contribution, and comparison is made with previous results in the literature. In the case of quasi-circular orbits, we present ready-to-use templates for the data analysis of detectors, and for the first time the scalar GW modes for comparisons with numerical relativity results.

引用

页数：38

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