Fast Rotating Relativistic Stars: Spectra and Stability without Approximation
C. Krüger, Kostas D. Kokkotas
Abstract
We study oscillations and instabilities of relativistic stars using perturbation theory in general relativity and take into account the contribution of a dynamic spacetime. We present the oscillation spectrum as well as the critical values for the onset of the secular CFS instability of neutron stars, and propose universal relations for gravitational wave asteroseismology, which may help constrain the neutron star radius and/or the nuclear equation of state. The results are relevant for all stages during a neutron star's life but especially to nascent or remnant objects following a binary merger.
Topics & Concepts
PhysicsNeutron starAsteroseismologyGravitational waveGeneral relativityInstabilityTheory of relativityAstrophysicsStarsGravitationSpectral lineRADIUSNumerical relativityRelativistic quantum chemistryAstronomyClassical mechanicsNuclear physicsQuantum mechanicsComputer securityComputer sciencePulsars and Gravitational Waves ResearchGamma-ray bursts and supernovaeAstrophysical Phenomena and Observations