Dark matter from cosmic defects on galactic scales?
Astrophysics
2010-05-12 v2 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
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.
Keywords
Cite
@article{arxiv.0807.4373,
title = {Dark matter from cosmic defects on galactic scales?},
author = {N. Guerreiro and P. P. Avelino and J. P. M. de Carvalho and C. J. A. P. Martins},
journal= {arXiv preprint arXiv:0807.4373},
year = {2010}
}
Comments
Submitted to Phys. Rev. D (Brief Reports). v2: Reference added and some typos corrected, matches published version