The chaplygin dark star

• Type: Article in International Scientific Journal
• Date: 2005

Authors

Orfeu Bertolami (Author) Other; Jorge Páramos (Author) Other

Journal

Title: Physical Review D: Particles and fields

Vol. 72

Initial page: 123512

ISSN: 0556-2821

Publisher: American Physical Society

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

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.

Language: Portuguese

Type (Professor's evaluation): Scientific