Nonlocal Equation of State in General Relativistic Radiating Spheres

Details Nonlocal Equation of State in General Relativistic Radiating Spheres Nonlocal Equation of State in General Relativistic Radiating Spheres

1998-06-05

arxiv.org/abs/gr-qc/9806029v1

Class.Quant.Grav.16:871-896,1999

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

19 pages, Revtex, 1 Postscript Figure

Scientific paper

10.1088/0264-9381/16/3/017

We show that under particular circumstances a general relativistic spherically symmetric bounded distribution of matter could satisfy a nonlocal equation of state. This equation relates, at a given point, the components of the corresponding energy momentum tensor not only as function at that point, but as a functional throughout the enclosed configuration. We have found that these types of dynamic bounded matter configurations, with constant gravitational potentials at the surface, admit a Conformal Killing Vector and fulfill the energy conditions for anisotropic imperfect fluids. We also present several analytical and numerical models satisfying these equations of state which collapse as reasonable radiating anisotropic spheres in general relativity.

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