Dark Matter Haloes and Rotation Curves via Brans-Dicke Theory
Astrophysics
2007-05-23 v2 General Relativity and Quantum Cosmology
High Energy Physics - Theory
Space Physics
Abstract
In the present work, the Brans-Dicke (BD) theory of gravity is taken as a possible theory of k-essence. Then starting with the (already known) Brans-Dicke-Schwarzschild solution which can represent the gravitationally bound static configurations of the BD scalar k-essence, issues like whether these configurations can reproduce the observed properties of galactic dark matter haloes have been addressed. It has been realized that indeed the BD scalar k-essence can cluster into dark matter halo-like objects with flattened rotation curves while exhibiting a dark energy-like negative pressure on larger scales.
Cite
@article{arxiv.astro-ph/0507399,
title = {Dark Matter Haloes and Rotation Curves via Brans-Dicke Theory},
author = {Hongsu Kim},
journal= {arXiv preprint arXiv:astro-ph/0507399},
year = {2007}
}
Comments
9 pages, Revtex4, Minor changes