The Active Gravitational Mass of a Heat Conducting Sphere Out of Hydrostatic Equilibrium

Details The Active Gravitational Mass of a Heat Conducting Sphere Out of Hydrostatic Equilibrium The Active Gravitational Mass of a Heat Conducting Sphere Out of Hydrostatic Equilibrium

1998-10-06

arxiv.org/abs/gr-qc/9810020v1

Gen.Rel.Grav.31:301-313,1999

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

To appear in General Relativity and Gravitation

Scientific paper

10.1023/A:1026684409560

We obtain an expression for the active gravitational mass of a relativistic heat conducting fluid, just after its departure from hydrostatic equilibrium, on a time scale of the order of relaxation time. It is shown that an increase of a characteristic parameter leads to larger (smaller) values of active gravitational mass of collapsing (expanding) spheres, enhacing thereby the instability of the system.

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