Relaxational effects in radiating stellar collapse
General Relativity and Quantum Cosmology
2009-10-31 v1
Abstract
Relaxational effects in stellar heat transport can in many cases be significant. Relativistic Fourier-Eckart theory is inherently quasi-stationary, and cannot incorporate these effects. The effects are naturally accounted for in causal relativistic thermodynamics, which provides an improved approximation to kinetic theory. Recent results, based on perturbations of a static star, show that relaxation effects can produce a significant increase in the central temperature and temperature gradient for a given luminosity. We use a simple stellar model that allows for non-perturbative deviations from staticity, and confirms qualitatively the predictions of the perturbative models.
Cite
@article{arxiv.gr-qc/9810001,
title = {Relaxational effects in radiating stellar collapse},
author = {Megan Govender and Roy Maartens and Sunil Maharaj},
journal= {arXiv preprint arXiv:gr-qc/9810001},
year = {2009}
}
Comments
10 pages