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Astrophysics > High Energy Astrophysical Phenomena

arXiv:1602.01566 (astro-ph)
[Submitted on 4 Feb 2016 (v1), last revised 2 Aug 2016 (this version, v3)]

Title:Testing Einstein's Weak Equivalence Principle With Gravitational Waves

Authors:Xue-Feng Wu, He Gao, Jun-Jie Wei, Xi-Long Fan, Peter Mészáros, Bing Zhang, Zi-Gao Dai, Shuang-Nan Zhang, Zong-Hong Zhu
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Abstract:A conservative constraint on the Einstein Weak Equivalence Principle (WEP) can be obtained under the assumption that the observed time delay between correlated particles from astronomical sources is dominated by the gravitational fields through which they move. Current limits on the WEP are mainly based on the observed time delays of photons with different energies. It is highly desirable to develop more accurate tests that include the gravitational wave (GW) sector. The detection by the advanced LIGO/VIRGO systems of gravitational waves will provide attractive candidates for constraining the WEP, extending the tests to gravitational interactions, with potentially higher accuracy. Considering the capabilities of the advanced LIGO/VIRGO network and the source direction uncertainty, we show that the joint detection of GWs and electromagnetic signals could probe the WEP to an accuracy down to $10^{-10}$, which is one order of magnitude tighter than previous limits, and seven orders of magnitude tighter than the multi-messenger (photons and neutrinos) results by supernova 1987A.
Comments: Accepted for publication in PRD
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE); General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:1602.01566 [astro-ph.HE]
  (or arXiv:1602.01566v3 [astro-ph.HE] for this version)
  https://doi.org/10.48550/arXiv.1602.01566
Journal reference: Phys. Rev. D 94, 024061 (2016)
Related DOI: https://doi.org/10.1103/PhysRevD.94.024061

Submission history

From: He Gao [view email]
[v1] Thu, 4 Feb 2016 06:16:45 UTC (179 KB)
[v2] Wed, 17 Feb 2016 03:33:05 UTC (163 KB)
[v3] Tue, 2 Aug 2016 04:47:18 UTC (164 KB)
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