Equation-of-State effects on Gravitational Waves in Core-Collapse Supernovae
Abstract
The nuclear equation-of-state (EOS) describing newly formed proto-neutron stars (PNSs) in core-collapse supernovae (CCSNe) is yet uncertain, and varying its prescription affects multimessenger signatures in CCSN simulations. Focusing on the gravitational wave (GW) signal, we demonstrate the effect of varying parameter values in the EOS. We conclude that an especially important parameter is the effective mass of nucleons which affect thermal properties and subsequently the PNS compactness, regulating the GW signal in both amplitude and frequency. By radially decomposing the GW emission, we show where in the PNS the GWs originate from.
- Publication:
-
Neutron Star Astrophysics at the Crossroads: Magnetars and the Multimessenger Revolution
- Pub Date:
- 2023
- DOI:
- 10.1017/S1743921322000953
- Bibcode:
- 2023IAUS..363..255E
- Keywords:
-
- supernovae: general;
- gravitational waves;
- equation of state;
- neutrinos