Chaplygin dark star

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

Authors

bertolami, o (Author) Other; paramos, j (Author) Other

Journal

Title: Physical Review D - Particles, Fields, Gravitation and Cosmology

Vol. 72 No. 9

ISSN: 1550-7998

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 61 Citations

Scopus - 65 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-000-0CE

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 an object, dubbed generalized Chaplygin dark star, should exist within the context of the generalized Chaplygin gas (GCG) 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: English

Type (Professor's evaluation): Scientific

No. of pages: 6