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Título: The evolution of discontinuities in radiating spheres in the diffusion approximation
Autores: Barreto Acevedo, Willians
Núñez, Luis
Herrera, L.
Fecha: 2005-12-08
2005-12-08
2005-12-08
1991-07-10
2005-12-08
Publicador: Universidad de los Andes Venezuela
Fuente:
Tipo:
Tema: Astrofísica
Distribuciones autogravitantes
Facultad de Ciencias.
Diffusion relativity
Shock waves
Astrophysics
Radiation distribution
Rankine-Hugoniot relation
Relativity
Shock discontinuity
Approximation
Diffusion
Heat transmission
Spheres
Artículos
Laboratorio de Física Teórica
Descripción: 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
wbarreto@ula.ve
nunez@ula.ve
laherrera@telcel.net.ve
Nivel monográfico
Idioma: Español