Phase shift of gravitational waves induced by aberration

被引：29

作者：

Torres-Orjuela, Alejandro ^{[1
,2
]}

Chen, Xian ^{[1
,2
]}

Amaro-Seoane, Pau ^{[2
,3
,4
,5
,6
]}

机构：

[1] Peking Univ, Sch Phys, Astron Dept, Beijing 100871, Peoples R China

[2] Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China

[3] CSIC, Inst Space Sci ICE, Barcelona 08193, Spain

[4] IEEC, Campus UAB, Barcelona 08193, Spain

[5] Chinese Acad Sci, Acad Math & Syst Sci, Inst Appl Math, Beijing 100190, Peoples R China

[6] TU Berlin, Zentrum Astron & Astrophys, D-10623 Berlin, Germany

来源：

PHYSICAL REVIEW D | 2020年 / 101卷 / 08期

基金：

美国国家科学基金会;

关键词：

BLACK-HOLE BINARIES; AGN DISCS; MOMENTUM; MERGER;

D O I：

10.1103/PhysRevD.101.083028

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The velocity of a gravitational wave (GW) source provides crucial information about its formation and evolution processes. Previous studies considered the Doppler effect on the phase of GWs as a potential signature of a time-dependent velocity of the source. However, the Doppler shift only accounts for the time component of the wave vector, and in principle motion also affects the spatial components. The latter effect, known as "aberration" for light, is analyzed in this paper for GWs and applied to the waveform modeling of an accelerating source. We show that the additional aberrational phase shift could be detectable in two astrophysical scenarios, namely, a recoiling binary black hole (BBH) due to GW radiation and a BBH in a triple system. Our results suggest that adding the aberrational phase shift in the waveform templates could significantly enhance the detectability of moving sources.

引用

页数：7

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