Numerical simulations of the approach to the singularity in vacuum spacetimes are presented here. The spacetimes examined have no symmetries and can be regarded as representing the general behaviorâ€¦ (More)

LemÃ¢itre-Tolman-Bondi inhomogeneous spacetimes are used as a cosmological model for type Ia supernova data. It is found that with certain parameter choices the model fits the data as well as theâ€¦ (More)

Critical gravitational collapse at the threshold of black hole formation, as first found by Choptuik, [2] has been studied in many systems. [3] With the exception of a study of vacuum, axisymmetricâ€¦ (More)

We use the numerical solution describing the evolution of a perturbed black string presented in [1] to elucidate the intrinsic behavior of the horizon. It is found that by the end of the simulation,â€¦ (More)

LemÃ¢Ä±tre-Tolman-Bondi inhomogeneous spacetimes can be used as a cosmological model to account for the type Ia supernova data. However, such models also give rise to large velocities of galaxyâ€¦ (More)

Gravitational radiation is one of the most important predictions of Einsteinâ€™s general theory of relativity. It has been detected indirectly through its effect on the orbital period of theâ€¦ (More)

Ratindranath Akhoury, David Garfinkle, Ryo Saotome, Alexander Vikman

2011

Numerical simulations of the accretion of test scalar fields with nonstandard kinetic terms (of the k-essence type) onto a Schwarzschild black hole are performed. We find a full dynamical solutionâ€¦ (More)