6533b7d2fe1ef96bd125f54b
RESEARCH PRODUCT
Universal Relations for Gravitational-Wave Asteroseismology of Protoneutron Stars
Martin ObergaulingerPablo Cerdá-duránJosé A. FontBernhard MüllerAlejandro Torres-fornésubject
PhysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)Equation of stateGravitational waveOscillationAstrophysics::High Energy Astrophysical PhenomenaGeneral Physics and AstronomyFOS: Physical sciencesAstrophysicsGeneral Relativity and Quantum Cosmology (gr-qc)Surface gravity01 natural sciencesAsteroseismologyGeneral Relativity and Quantum CosmologyStarsSupernova0103 physical sciencesNeutrino010306 general physicsAstrophysics - High Energy Astrophysical PhenomenaAstrophysics::Galaxy Astrophysicsdescription
State-of-the-art numerical simulations of core-collapse supernovae reveal that the main source of gravitational waves is the excitation of proto-neutron star modes during post-bounce evolution. In this work we derive universal relations that relate the frequencies of the most common oscillation modes observed, i.e. g-modes, p-modes and the f-mode, with fundamental properties of the system, such as the surface gravity of the proto-neutron star or the mean density in the region enclosed by the shock. These relations are independent of the equation of state, the neutrino treatment, and the progenitor mass and hence can be used to build methods to infer proto-neutron star properties from gravitational-wave observations alone. We outline how these measurements could be done and the constraints that could be placed on the proto-neutron star properties.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-02-26 |