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Título: Sound speeds, cracking and stability of self-gravitating anisotropic compact objects.
Autores: Abreu, Henso
Núñez, Luis
Hernández G., Héctor
Correo Electrónico: henso@ula.ve
nunez@ula.ve
hector@ula.ve
Editor: SABER ULA
Resumen: Sound speeds, cracking and stability of self-gravitating anisotropic compact objects. Abstract Using the the concept of cracking we explore the influence of density fluctuations and local anisotropy have on the stability of local and non-local anisotropic matter configurations in general relativity. This concept, conceived to describe the behaviour of a fluid distribution just after its departure from equilibrium, provides an alternative approach to consider the stability of selfgravitating compact objects. We show that potentially unstable regions within a configuration can be identify as a function of the difference of propagations of sound along tangential and radial directions. In fact, it is found that these regions could occur when, at particular point within the distribution, the tangential speed of sound is greater than radial one.
Fecha: 25-Jun-2007
Palabras Clave: Sound speeds
Cracking
URI: http://www.saber.ula.ve/handle/123456789/17094
Aparece en colecciones:Articulos, Pre-prints (Facultad de Ciencias)
Articulos, Pre-prints (Centro Nacional de Cálculo Científico (CeCalCULA))
Articulos, Pre-prints (Centro de Física Fundamental (CFF))

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