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Gravitational Wavetrains in the Quasi-Equilibrium Approximation: A Model Problem in Scalar Gravitation
Hwei-Jang Yo, Thomas W. Baumgarte, Stuart L. Shapiro
A quasi-equilibrium (QE) computational scheme was recently developed in general relativity to calculate the complete gravitational wavetrain emitted during the inspiral phase of co…
Differential Rotation in Neutron Stars: Magnetic Braking and Viscous Damping
Stuart L. Shapiro
Diffferentially rotating stars can support significantly more mass in equilibrium than nonrotating or uniformly rotating stars, according to general relativity. The remnant of a bi…
Dynamical Bar Instability in Rotating Stars: Effect of General Relativity
Motoyuki Saijo, Masaru Shibata, Thomas W. Baumgarte +1
We study the dynamical stability against bar-mode deformation of rapidly and differentially rotating stars in the first post-Newtonian approximation of general relativity. We vary…
Evolution of Differentially Rotating Supermassive Stars to the Onset of Bar Instability
Kimberly C. B. New, Stuart L. Shapiro
Thermal emission from a rotating, supermassive star will cause the configuration to contract slowly and spin up. If internal viscosity and magnetic fields are sufficiently weak, th…
Computing the Complete Gravitational Wavetrain from Relativistic Binary Inspiral
Matthew D. Duez, Thomas W. Baumgarte, Stuart L. Shapiro
We present a new method for generating the nonlinear gravitational wavetrain from the late inspiral (pre-coalescence) phase of a binary neutron star system by means of a numerical…
The Formation of Supermassive Black Holes and the Evolution of Supermassive Stars
Kimberly C. B. New, Stuart L. Shapiro
The existence of supermassive black holes is supported by a growing body of observations. Supermassive black holes and their formation events are likely candidates for detection by…