Abstract: The era of multimessenger astronomy with gravitational waves (GW) and electromagnetic (EM) telescopes began with the detection of GW170817. While this event had an exceptionally large signal-to-noise ratio, it hinted at a population of quieter events. By combining data from both GW and EM telescopes, we can discover new, sub-threshold events that would not have been detected otherwise. As an example, I will discuss a potential binary neutron star merger that was identified by combining LIGO data with a simplified model of the Fermi-GBM sky map. New, more confident detections could be made by doing joint Bayesian inference between GW and EM telescopes. Such a framework would further maximize the potential of multimessenger astronomy.
