Elastic Stars in General Relativity: I. Foundations and Equilibrium Models

Details Elastic Stars in General Relativity: I. Foundations and Equilibrium Models Elastic Stars in General Relativity: I. Foundations and Equilibrium Models

2002-11-07

arxiv.org/abs/gr-qc/0211026v2

Class.Quant.Grav. 20 (2003) 3613-3648; Class.Quant.Grav. 22 (2005) 771

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

33 pages, 5 eps-figures, referencenses and comments added

Scientific paper

10.1088/0264-9381/22/4/C02

The aim of this paper is twofold. First, we set up the theory of elastic matter sources within the framework of general relativity in a self-contained manner. The discussion is primarily based on the presentation of Carter and Quintana but also includes new methods and results as well as some modifications that in our opinion make the theory more modern and transparent. For instance, the equations of motion for the matter are shown to take a neat form when expressed in terms of the relativistic Hadamard elasticity tensor. Using this formulation we obtain simple formulae for the speeds of elastic wave propagation along eigendirections of the pressure tensor. Secondly, we apply the theory to static spherically symmetric configurations using a specific equation of state and consider models either having an elastic crust or core.

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