Search results for "stars : rotation"

showing 1 items of 1 documents

Rotational effects on the oscillation frequencies of newly born proto-neutron stars

2003

In this paper we study the effects of rotation on the frequencies of the quasi-normal modes of a proto-neutron star (PNS) born in a gravitational collapse during the first minute of life. Our analysis starts a few tenths of seconds after the PNS formation, when the stellar evolution can be described by a sequence of equilibrium configurations. We use the evolutionary models developed by Pons et al. (1999; 2001) that describe how a non rotating star cools down and contracts while neutrino diffusion and thermalization processes dominate the stellar dynamics. For assigned values of the evolution time, we set the star into slow rotation and integrate the equations of stellar perturbations in th…

relativityFOS: Physical sciencesmethods : numericalAstrophysicsAstrophysicsInstabilitystars : oscillationsmethods: numericalstars: neutronstars: rotationstars : rotationStellar dynamicsGravitational collapseAstrophysics::Solar and Stellar AstrophysicsTime domainStellar evolutionPhysicsgravitational waves; methods : numerical; methods: numerical; relativity; stars : neutron; stars : oscillations; stars : rotation; stars: neutron; stars: oscillations; stars: rotationAstrophysics (astro-ph)Astronomy and Astrophysicsstars : neutronNeutron stargravitational wavesSpace and Planetary ScienceFrequency domainstars: oscillationsAstrophysics::Earth and Planetary AstrophysicsNeutrinoMonthly Notices of the Royal Astronomical Society
researchProduct