A grid environment to experiment on Spherically Symmetric General Relativistic Radiation Hydrodynamics

Abstract:

This paper presents a Grid application, GridChoque: a distributed, and a grid based, environment devised to explore the general relativistic spherically radiative stellar collapse using several tools of calculus and visualization. GridChoque calculation engine uses a general method to solve the Einstein Equations for Spherically Radiant spacetimes proposed by L. Herrera, and Collaborators. Besides regularity conditions, models are only restricted by a heuristic assumption relating hydrodynamics and radiation physical variables such as density, pressure, energy flux and radial matter velocity. This ansatz, guided by very solid physical intuition, reduces the problem of solving the partial and nonlinear Einstein Equations to a numerical integration of a system of ordinary differential equations for quantities evaluated at the surfaces (shocks and/or boundaries).

Año de publicación:

2009

Keywords:

Fuente:

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