Investigating GW190425 with numerical-relativity simulations

The third observing run of the LIGO-Virgo Collaboration has resulted in many gravitational wave detections, including binary neutron star merger GW190425. However, none these events have been accompanied with an electromagnetic transient found during extensive follow-up searches. In this article, we perform new numerical-relativity simulations and black hole-neutron systems that a chirp mass consistent Assuming GW190425's sky location was covered sufficient accuracy searches, investigate whether nondetection kilonova is compatible source parameters estimated through gravitational-wave analysis how one can use information to place constraints on properties system. Our suggest GW190425 incompatible unequal ratio $q<0.8$ when considering stiff or moderately equations state if face by observation. shows detailed observational result for kilonovae will be useful constrain stars future events.