Investigating the detection rates and inference of gravitational-wave and radio emission from black hole neutron star mergers

Understand

Black hole neutron star (BHNS) mergers have recently been detected through their gravitational-wave (GW) emission.

• BHNS mergers could also produce electromagnetic (EM) emission as a short gamma-ray burst (sGRB), and/or an sGRB afterglow upon interaction with the circummerger medium.
• Here, we make predictions for the expected detection rates with the Square Kilometre Array Phase 1 (SKA1) of sGRB radio afterglows associated with BHNS mergers.
• We also investigate the benefits of a multimessenger analysis in inferring the properties of the merging binary.