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Search for tensor, vector, and scalar polarizations in the stochastic gravitational-wave background


Abbott, BP and Abbott, R and Siellez, K and Zweizig, J, LIGO Scientific Collaboration and Virgo Collaboration, Search for tensor, vector, and scalar polarizations in the stochastic gravitational-wave background, Physical Review Letters, 120, (20) Article 201102. ISSN 0031-9007 (2018) [Refereed Article]

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Copyright Statement

2018 American Physical Society.

DOI: doi:10.1103/PhysRevLett.120.201102


The detection of gravitational waves with Advanced LIGO and Advanced Virgo has enabled novel tests of general relativity, including direct study of the polarization of gravitational waves. While general relativity allows for only two tensor gravitational-wave polarizations, general metric theories can additionally predict two vector and two scalar polarizations. The polarization of gravitational waves is encoded in the spectral shape of the stochastic gravitational-wave background, formed by the superposition of cosmological and individually unresolved astrophysical sources. Using data recorded by Advanced LIGO during its first observing run, we search for a stochastic background of generically polarized gravitational waves. We find no evidence for a background of any polarization, and place the first direct bounds on the contributions of vector and scalar polarizations to the stochastic background.

Item Details

Item Type:Refereed Article
Keywords:Gravitational waves, tensor polarization, vector polarization, scalar polarization
Research Division:Physical Sciences
Research Group:Astronomical sciences
Research Field:General relativity and gravitational waves
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Siellez, K (Dr Karelle Siellez)
ID Code:151977
Year Published:2018
Web of Science® Times Cited:36
Deposited By:Physics
Deposited On:2022-08-09
Last Modified:2022-09-28
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