Two effects in slowly evolving dissipative self-gravitating spheres

Details Two effects in slowly evolving dissipative self-gravitating spheres Two effects in slowly evolving dissipative self-gravitating spheres

Feb 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997phrvd..55.2044h&link_type=abstract

Physical Review D (Particles, Fields, Gravitation, and Cosmology), Volume 55, Issue 4, 15 February 1997, pp.2044-2050

Physics

12

Relativistic Stars: Structure, Stability, And Oscillations, Stellar Structure, Interiors, Evolution, Nucleosynthesis, Ages

Scientific paper

We study the slow evolution of spherically symmetric fluid distributions undergoing dissipation in the form of a radial heat flow. We analyze three examples and show that, depending on the heat flow distribution, different signs in the velocity of fluid elements may appear, giving rise to the splitting of the configuration. It is also shown that whenever the slowly evolving regime is compatible with very strong gravitational fields, the heat flux becomes negative (directed inward), and the fluid will eventually expand.

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