Measuring Gravitational-Wave Propagation Speed with Multimessenger Observations
نویسندگان
چکیده
A measurement of gravitational wave (GW) propagation speed is one of important tests of gravity in a dynamical regime. We report a method to measure the GW propagation speed by directly comparing arrival times of GWs, neutrinos from supernovae (SN), and photons from short gamma-ray bursts (SGRB). We found that the future multimessenger observations can test the GW propagation speed with the precision of ∼ 10−16-10−15, improving the previous suggestions by 9 − 10 orders of magnitude. We also propose a novel method that distinguishes the true signal due to the deviation of GW speed from the speed of light and the intrinsic time delay with compact binaries at cosmological distances.
منابع مشابه
Measuring speed of gravitational waves by observations of photons and neutrinos from compact binary mergers and supernovae
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