Dedicated-frequency analysis of gravitational-wave bursts from core-collapse supernovae with minimal assumptions

Abstract

Gravitational-wave (GW) emissions from core-collapse supernovae (CCSNe) provide insights into the internal processes leading up to their explosions. Theory predicts that CCSN explosions are driven by hydrodynamical instabilities like the standing accretion shock instability or neutrino-driven convection, and simulations show that these mechanisms emit GWs at low frequencies (≲0.25 kHz). Thus, the detection of low-frequency GWs, or lack thereof, is useful for constraining explosion mechanisms in CCSNe. This paper introduces the dedicated-frequency framework, which is designed to follow up GW burst detections using bandpass analyses. The primary aim is to study whether low-frequency (LF) follo..