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Axisymmetric Modes of Rotating Relativistic Stars in the Cowling Approximation
Jose A. Font, Harald Dimmelmeier, Anshu Gupta +1
Axisymmetric pulsations of rotating neutron stars can be excited in several scenarios, such as core-collapse, crust and core-quakes and binary mergers and could become detectable e…
Nonlinear evolution of r-modes in rotating relativistic stars
Jose A. Font, Nikolaos Stergioulas
A numerical study of nonlinear r-modes in isentropic, rapidly rotating relativistic stars, via 3-D general-relativistic hydrodynamical evolutions, is presented. On dynamical timesc…
Evolutionary Self-Energy-Loss Effects in Compact Binary Systems: Importance of Rapid Rotation and of Equation of State
N. K. Spyrou, N. Stergioulas
The spin-down of a millisecond pulsar in a compact binary system leads to self-energy losses, that cause the binary's orbital period to increase (the effect being of first post-New…
Nonlinear r-modes in Rapidly Rotating Relativistic Stars
Nikolaos Stergioulas, Jose A. Font
The r-mode instability in rotating relativistic stars has been shown recently to have important astrophysical implications (including the emission of detectable gravitational radia…
R-mode runaway and rapidly rotating neutron stars
N. Andersson, D. I. Jones, K. D. Kokkotas +1
We present a simple spin evolution model that predicts that rapidly rotating accreting neutron stars will mainly be confined to a narrow range of spin-frequencies; P= 1.5-5 ms. Thi…
Towards a Stable Numerical Evolution of Strongly Gravitating Systems in General Relativity: The Conformal Treatments
Miguel Alcubierre, Bernd Bruegmann, Thomas Dramlitsch +5
We study the stability of three-dimensional numerical evolutions of the Einstein equations, comparing the standard ADM formulation to variations on a family of formulations that se…