English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Detection of gravitational waves (GW) provides us an opportunity to testgeneral relativity in strong and dynamical regimes of gravity. One of the testsis checking whether GW propagates with the speed of light or not. This test iscrucial because the velocity of GW has not ever been directly measured.Propagation speed of a GW can deviate from the speed of light due to themodification of gravity, graviton mass, and the nontrivial spacetime structuresuch as extra dimensions and quantum gravity effects. Here we report a simplemethod to measure the propagation speed of a GW by directly comparing arrivaltimes between gravitational waves, and neutrinos from supernovae or photonsfrom short gamma-ray bursts. As a result, we found that the futuremultimessenger observations of a GW, neutrinos, and photons can test the GWpropagation speed with the precision of ~10^{-16} improving the previoussuggestions by 8-10 orders of magnitude. We also propose a novel method thatdistinguishes the true signal due to the deviation of GW propagation speed fromthe speed of light and the intrinsic time delay of the emission at a source bylooking at the redshift dependence.

Measuring Speed of Gravitational Waves by Observations of Photons and Neutrinos from Compact Binary Mergers and Supernovae