Speaker
Description
The IceCube Neutrino Observatory is sensitive to the full sky, with nearly 100% up time. It is therefore well suited to search for neutrinos accompanying transient sources, including the sources of gravitational waves. Various models predict that neutrinos could be produced by compact object mergers including at least one neutron star or even by binary black hole mergers. For every gravitational wave event detected by LIGO/Virgo/KAGRA, we have searched for accompanying neutrinos coincident in time and direction, using multiple neutrino event signatures, energy ranges, and analysis methods. This includes low-threshold real-time searches in order to rapidly inform other observers of a possible coincident neutrino, which is typically localized hundreds of times more precisely than a gravitational wave. During the ongoing observing run O4, we publish results of the neutrino searches with a median latency of 21 minutes from the gravitational wave’s arrival at Earth. I will summarize our previous searches as well as results to date during O4.
