Detecting Scalar Fields with Extreme Mass Ratio Inspirals

被引：64

作者：

Maselli, Andrea ^{[1
,2
]}

Franchini, Nicola ^{[3
,4
,5
]}

Gualtieri, Leonardo ^{[1
,2
]}

Sotiriou, Thomas P. ^{[6
,7
]}

机构：

[1] Sapienza Univ Roma, Dipartimento Fis, Piazzale Aldo Moro 5, I-00185 Rome, Italy

[2] Sez INFN Roma1, Piazzale Aldo Moro 5, I-00185 Rome, Italy

[3] SISSA, Via Bonomea 265, I-34136 Trieste, Italy

[4] Ist Nazl Fis Nucl, Sez Trieste, Via Valerio 2, I-34127 Trieste, Italy

[5] IFPU Inst Fundamental Phys Universe, Via Beirut 2, I-34014 Trieste, Italy

[6] Univ Nottingham, Sch Math Sci, Univ Pk, Nottingham NG7 2RD, England

[7] Univ Nottingham, Sch Phys & Astron, Univ Pk, Nottingham NG7 2RD, England

来源：

PHYSICAL REVIEW LETTERS | 2020年 / 125卷 / 14期

基金：

英国科学技术设施理事会; 欧盟地平线“2020”; 美国国家科学基金会;

关键词：

BLACK-HOLES; GRAVITATIONAL-FIELD;

D O I：

10.1103/PhysRevLett.125.141101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study extreme mass ratio inspirals (EMRIs), during which a small body spirals into a supermassive black hole, in gravity theories with additional scalar fields. We first argue that no-hair theorems and the properties of known theories that manage to circumvent them introduce a drastic simplification to the problem: the effects of the scalar on supermassive black holes, if any, are mostly negligible for EMRIs in vast classes of theories. We then exploit this simplification to model the inspiral perturbatively and we demonstrate that the scalar charge of the small body leaves a significant imprint on gravitational wave emission. Although much higher precision is needed for waveform modeling, our results strongly suggest that this imprint is observable with Laser Interferometer Space Antenna, rendering EMRIs promising probes of scalar fields.

引用

页数：7

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