Speaker
Description
Gravitational wave observations from the Laser Interferometer Gravitational-Wave Observatory (LIGO) have been used to pinpoint the timing of several compact object mergers involving a neutron star over the past decade. These precise timestamps allow for more efficient searches for particle signals from a given merger by enabling tight coincidence-timing cuts that reduce background and allow sidebands outside these windows to be used for comparison. One such signal is neutrino emission- yet undetected but theorized to exist- which may be observable from Earth. DEAP-3600 is a liquid argon scintillation detector with minimal backgrounds designed to search for dark matter at very low energies. Its argon target allows for neutrino absorption interactions to be visible in the detector, providing a possible channel for observing neutron star merger neutrinos. During its second fill from 2017-2020, DEAP-3600 recorded data in conjunction with seven merger events observed by LIGO. This data was analyzed using an empirical background model with the goal of either identifying an interaction from a merger neutrino or refining exclusion limits set by other similar searches.
| Keyword-1 | Multimessenger |
|---|---|
| Keyword-2 | Neutrino |
| Keyword-3 | Argon |