Universality in supernova gravitational waves with proto-neutron star properties

Understand

Gravitational wave signals from core-collapse supernovae are one of the important observables for extracting the information of dense matter.

• To extract the properties of proto-neutron stars produced via core-collapse supernovae by asteroseismology, we perform a linear perturbation analysis using data obtained from two-dimensional numerical simulations.
• We employ 12 and 20 solar-mass progenitors and compare two different treatments of gravity.
• One is a general relativistic one with a conformal flatness condition and the other is an effective gravitational potential mimicking the Tolman-Oppenheimer-Volkoff solution.