Bounding the Speed of Gravity with Gravitational Wave Observations

被引：60

作者：

Cornish, Neil ^{[1
]}

Blas, Diego ^{[2
]}

Nardini, Germano ^{[3
]}

机构：

[1] Montana State Univ, Dept Phys, eXtreme Grav Inst, Bozeman, MT 59717 USA

[2] CERN, Theoret Phys Dept, CH-1211 Geneva 23, Switzerland

[3] Univ Bern, Inst Theoret Phys, AEC, Sidlerstr 5, CH-3012 Bern, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 2017年 / 119卷 / 16期

基金：

澳大利亚研究理事会; 美国国家科学基金会; 瑞士国家科学基金会; 英国科学技术设施理事会;

关键词：

Wave propagation - Speed - Gravitational effects - Bayesian networks;

D O I：

10.1103/PhysRevLett.119.161102

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The time delay between gravitational wave signals arriving at widely separated detectors can be used to place upper and lower bounds on the speed of gravitationalwave propagation. Using aBayesian approach that combines the first three gravitational wave detections reported by the LIGO Scientific and Virgo Collaborations we constrain the gravitational waves propagation speed c(gw) to the 90% credible interval 0.55c < c(gw) < 1.42c, where c is the speed of light in vacuum. These bounds will improve as more detections are made and as more detectors join the worldwide network. Of order 20 detections by the two LIGO detectors will constrain the speed of gravity to within 20% of the speed of light, while just five detections by the LIGO-Virgo-Kagra network will constrain the speed of gravity to within 1% of the speed of light.

引用

页数：5