Radial stability of spherical bosonic stars and critical points
Nuno M. Santos, Carolina L. Benone, Carlos Herdeiro
Abstract
Abstract We study radial perturbations of spherically symmetric spin-0 and spin-1 bosonic stars, computing numerically the squared frequency of the fundamental mode. We find that not all critical points — where the Arnowitt-Deser-Misner mass attains an extremum — correspond to zero modes. Thus, radial stability does not always change at such critical points. The results are in agreement with the so-called critical point method.
Topics & Concepts
PhysicsStability (learning theory)StarsCritical mass (sociodynamics)Critical point (mathematics)Spin (aerodynamics)Mathematical physicsPoint (geometry)Mode (computer interface)Zero (linguistics)Classical mechanicsMathematical analysisGeometryAstrophysicsMathematicsMachine learningSocial scienceLinguisticsPhilosophyThermodynamicsComputer scienceOperating systemSociologyGeophysics and Gravity MeasurementsCosmology and Gravitation TheoriesPulsars and Gravitational Waves Research