Dark matter from cosmic defects on galactic scales?

• Type: Article in International Scientific Journal
• Date: 2008

Authors

Guerreiro, N (Author) Other; Avelino, PP (Author) FCUP; de Carvalho, JPM (Author) FCUP; Martins, CJAP (Author) FCUP

Journal

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

Vol. 78 No. 103508

ISSN: 1550-7998

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 8 Citations

Scopus - 8 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-003-WS9

DOI: 10.1103/physrevd.78.067302

Abstract (EN): We discuss the possible dynamical role of extended cosmic defects on galactic scales, specifically focusing on the possibility that they may provide the dark matter suggested by the classical problem of galactic rotation curves. We emphasize that the more standard defects (such as Goto-Nambu strings) are unsuitable for this task but show that more general models (such as transonic wiggly strings) could in principle have a better chance. In any case, we show that observational data severely restricts any such scenarios.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4