First Search for Nontensorial Gravitational Waves from Known Pulsars
Name
PhysRevLett.120.031104.pdf
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649.15 KB
Format
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Checksum (MD5)
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Author(s)
Abbott, B. P.
Abbott, R.
Abbott, T. D.
Acernese, F.
Ackley, K.
Adams, C.
Adams, T.
Addesso, P.
Adhikari, R. X.
Adya, V. B.
Date Issued
January 2018
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Abbott, B. P. et al. "First Search for Nontensorial Gravitational Waves from Known Pulsars." Physical Review Letters 120, 3 (January 2018): 031104 © 2018 American Physical Society
Version
Final published version
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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
MIT Kavli Institute for Astrophysics and Space Research
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevLett.120.031104
