Role of baryons in unified dark matter models

• Type: Article in International Scientific Journal
• Date: 2003

Authors

Beca, LMG (Author) Other; Avelino, PP (Author) FCUP; de Carvalho, JPM (Author) FCUP; Martins, CJAP (Author) Other

Journal

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

Vol. 67

Pages: 1013011-1013014

ISSN: 1550-7998

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 76 Citations

Scopus - 55 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-000-GND

DOI: 10.1103/physrevd.67.101301

Abstract (EN): We discuss the importance of including baryons in analyses of unified dark matter scenarios, focusing on toy models involving a generalized Chaplygin gas. We determine observational constraints on this unified dark matter scenario coming from large-scale structure, type Ia supernovae and CMB data showing how this component can bring about a different behavior from the classical cold dark matter model with a cosmological constant and thus motivate further studies of this type of models. We also speculate on interesting new features which are likely to be important on nonlinear scales in this context.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4