The chaplygin dark star

• Tipo: Artigo em Revista Científica Internacional
• Data: 2005

Autores

Orfeu Bertolami (Autor) Outra; Jorge Páramos (Autor) Outra

Revista

Título: Physical Review D: Particles and fields

Vol. 72

Página Inicial: 123512

ISSN: 0556-2821

Editora: American Physical Society

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

DOI: 10.1103/PhysRevD.72.123512

Abstract (EN): We study the general properties of a spherically symmetric body described through the generalized Chaplygin equation of state. We conclude that such object, dubbed generalized Chaplygin dark star, should exist within the context of the generalized Chaplygin gas model of unification of dark energy and dark matter, and derive expressions for its size and expansion velocity. A criteria for the survival of the perturbations in the GCG background that give origin to the dark star are developed, and its main features are analyzed.

Idioma: Português

Tipo (Avaliação Docente): Científica