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.
Original language | English |
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Pages (from-to) | 557-564 |
Journal | Monthly Notices of the Royal Astronomical Society |
Volume | 310 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1 Dec 1999 |
Keywords
- hydrodynamics
- radiation mechanisms : thermal
- relativity