Gravitational collapse of Vaidya spacetime

Spherical and Non-spherical Gravitational Collapse in Monopole-anti-de Sitter-vaidya Spacetime

Gravitational collapse and spacetime singularities

The nature of gravitational collapse was the subject of debate and controversy for much of the last century. During the 1960’s and 1970’s our understanding of general relativity consolidated and culminated in our modern understanding of black holes and spacetime singularities. Since then, there has been significant advances in understanding the dynamics of gravitational collapse and the nature ...

Gravitational collapse of a Hagedorn fluid in Vaidya geometry

The gravitational collapse of a high-density null charged matter fluid, satisfying the Hagedorn equation of state, is considered in the framework of the Vaidya geometry. The general solution of the gravitational field equations can be obtained in an exact parametric form. The conditions for the formation of a naked singularity, as a result of the collapse of the compact object, are also investi...

Analytic approximations to the spacetime of a critical gravitational collapse.

We present analytic expressions that approximate the behavior of the spacetime of a collapsing spherically symmetric scalar eld in the critical regime rst discovered by Choptuik. We nd that the critical region of spacetime can usefully be divided into a \quiescent" region and an \oscillatory" region, and a moving \transition edge" that separates the two regions. We nd that in each region the cr...

Gravitational collapse in 2+1 dimensional AdS spacetime

We present results of numerical simulations of the formation of black holes from the gravitational collapse of a massless, minimally-coupled scalar field in 2+1 dimensional, axially-symmetric, anti de-Sitter (AdS) spacetime. The geometry exterior to the event horizon approaches the BTZ solution, showing no evidence of scalar ‘hair’. To study the interior structure we implement a variant of blac...