The evolution of discontinuities in radiating spheres in the diffusion approximation
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2005-12-08Palabras Clave
Astrofísica, Distribuciones autogravitantesDiffusion relativity, Shock waves, Astrophysics, Radiation distribution, Rankine-Hugoniot relation, Relativity, Shock discontinuity, Approximation, Diffusion, Heat transmission, Spheres
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The evolution of discontinuities in radiating spheres in the diffusion approximation
(Barreto Acevedo, Willians; Herrera, L.; Núñez, Luis)
Abstract
The evolution of discontinuities in a general relativistic sphere free of singularities is studied. The energy transport mechanism through fluid is diffusive. The distribution of matter is divided by a shock wave front in two regions. The equations of state at both sides of the shock are different, and the solutions are matched on it via the Rankine-Hugoniot conditions. The outer metric joins the Vaidya solution at the boundary surface of the sphere. Exploding models are obtained, and their dynamics are studied using a generalized compressibility coefficient for nonadiabatic systems.
Artículo publicado en: The Astrophysical Journal, 375:663-673,1991 July 10
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Correo Electrónico | wbarreto@ula.ve nunez@ula.ve laherrera@telcel.net.ve |
Editor | SABER ULA |