Orateur
Description
A rapid estimate of the detectability of gravitational waves (GWs) associated with astronomical transients is essential for optimizing multi-messenger follow-up observations and for understanding the physical origin of the transient. We introduce the Targeted Detectability Range (TDR), a method designed to rapidly evaluate the detection probability of compact binary coalescences under the assumption that they are associated with an external messenger, such as an electromagnetic or neutrino signal. Unlike the standard GW range, which averages over generic source properties, the TDR incorporates prior information inferred from the external observation, including sky position, binary inclination, and physically motivated constraints on the component masses. We compute the TDR for all gamma-ray bursts, both short and long duration, observed during the first three observing runs of the LIGO–Virgo–KAGRA collaboration. Finally, we validate the method through a systematic comparison with the 90% exclusion distances obtained from modelled targeted GW searches. The tool is publicly available online and a short overview of the web interface will be given.