First search for nontensorial gravitational waves from known pulsars
First search for nontensorial gravitational waves from known pulsars
We present results from the first directed search for nontensorial gravitational waves. While general relativity allows for tensorial (plus and cross) modes only, a generic metric theory may, in principle, predict waves with up to six different polarizations. This analysis is sensitive to continuous signals of scalar, vector, or tensor polarizations, and does not rely on any specific theory of gravity. After searching data from the first observation run of the advanced LIGO detectors for signals at twice the rotational frequency of 200 known pulsars, we find no evidence of gravitational waves of any polarization. We report the first upper limits for scalar and vector strains, finding values comparable in magnitude to previously published limits for tensor strain. Our results may be translated into constraints on specific alternative theories of gravity.
1-13
Abbott, B.P.
20b32f53-5355-40eb-9d69-91c95d56e693
Jones, D.I.
b8f3e32c-d537-445a-a1e4-7436f472e160
LIGO Scientific Collaboration and Virgo Collaboration
January 2018
Abbott, B.P.
20b32f53-5355-40eb-9d69-91c95d56e693
Jones, D.I.
b8f3e32c-d537-445a-a1e4-7436f472e160
Abbott, B.P.
,
LIGO Scientific Collaboration and Virgo Collaboration
(2018)
First search for nontensorial gravitational waves from known pulsars.
Physical Review Letters, 120 (3), , [031104].
(doi:10.1103/PhysRevLett.120.031104).
Abstract
We present results from the first directed search for nontensorial gravitational waves. While general relativity allows for tensorial (plus and cross) modes only, a generic metric theory may, in principle, predict waves with up to six different polarizations. This analysis is sensitive to continuous signals of scalar, vector, or tensor polarizations, and does not rely on any specific theory of gravity. After searching data from the first observation run of the advanced LIGO detectors for signals at twice the rotational frequency of 200 known pulsars, we find no evidence of gravitational waves of any polarization. We report the first upper limits for scalar and vector strains, finding values comparable in magnitude to previously published limits for tensor strain. Our results may be translated into constraints on specific alternative theories of gravity.
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e-pub ahead of print date: 19 January 2018
Published date: January 2018
Identifiers
Local EPrints ID: 417526
URI: http://eprints.soton.ac.uk/id/eprint/417526
ISSN: 1079-7114
PURE UUID: 886dd800-4162-41d3-a857-1f16c339f59c
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Date deposited: 02 Feb 2018 17:30
Last modified: 16 Mar 2024 03:06
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Author:
B.P. Abbott
Corporate Author: LIGO Scientific Collaboration and Virgo Collaboration
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