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First search for nontensorial gravitational waves from known pulsars

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.
1079-7114
1-13
Abbott, B.P.
7f736834-8fa8-42bd-8b3a-402615d38556
Jones, D.I.
b8f3e32c-d537-445a-a1e4-7436f472e160
LIGO Scientific Collaboration and Virgo Collaboration
Abbott, B.P.
7f736834-8fa8-42bd-8b3a-402615d38556
Jones, D.I.
b8f3e32c-d537-445a-a1e4-7436f472e160

Abbott, B.P. and Jones, D.I. , LIGO Scientific Collaboration and Virgo Collaboration (2018) First search for nontensorial gravitational waves from known pulsars. Physical Review Letters, 120 (3), 1-13. (doi:10.1103/PhysRevLett.120.031104).

Record type: Article

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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More information

e-pub ahead of print date: 19 January 2018
Published date: January 2018

Identifiers

Local EPrints ID: 417526
URI: https://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: 02 Feb 2018 17:30

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Contributors

Author: B.P. Abbott
Author: D.I. Jones

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