The Role of Shear in Dissipative Gravitational Collapse
Abstract
In this paper, we investigate the physics of a radiating star undergoing dissipative collapse in the form of a radial heat flux. Our treatment clearly demonstrates how the presence of shear affects the collapse process; we are in a position to contrast the physical features of the collapsing sphere in the presence of shear with the shear-free case. By employing a causal heat transport equation of the Maxwell-Cattaneo form we show that the shear leads to an enhancement of the core temperature thus emphasizing that relaxational effects cannot be ignored when the star leaves hydrostatic equilibrium.
- Publication:
-
International Journal of Modern Physics D
- Pub Date:
- November 2014
- DOI:
- 10.1142/S0218271814500138
- arXiv:
- arXiv:1312.1546
- Bibcode:
- 2014IJMPD..2350013G
- Keywords:
-
- Heat flux;
- shear;
- gravitational collapse;
- 04.40.Dg;
- 95.30.Sf;
- 04.50.Gh;
- Relativistic stars: structure stability and oscillations;
- Relativity and gravitation;
- Higher-dimensional black holes black strings and related objects;
- General Relativity and Quantum Cosmology
- E-Print:
- 15 pages, To appear in Int. J. Mod. Phys. D