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Neural Post-Einsteinian Test of General Relativity with the Third Gravitational Wave Transient Catalog
Yiqi Xie1,2,3, Gautham Narayan2,4,5, Nicolás Yunes1,5
1University of Illinois at Urbana-Champaign, Illinois Center for Advanced Studies of the Universe, Department of Physics, Urbana, Illinois 61801, USA.
None:
Gravitational waves (GWs) from compact binaries are excellent probes of gravity in the strong- and dynamical-field regimes. We report a test of general relativity (GR) with the third GW Transient Catalog (GWTC-3) plus a few O4 events using the recently developed neural post-Einsteinian framework, both on individual events and at the population level through hierarchical modeling. We find no significant violation of GR and place a constraint that, for the first time, efficiently covers non-GR theories characterized by not only post-Newtonian deviations but also those beyond under the same theory-agnostic framework.
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