Empirical testing of Tsallis' Thermodynamics as a model for dark matter halos
Astrophysics
2009-11-11 v1
Abstract
We study a dark matter halo model from two points of view: the ``stellar polytrope'' (SP) model coming from Tsallis' thermodynamics, and the one coming from the Navarro-Frenk-White (NFW) paradigm. We make an appropriate comparison between both halo models and analyzing the relations between the global physical parameters of observed galactic disks, coming from a sample of actual galaxies, with the ones of the unobserved dark matter halos, we conclude that the SP model is favored over the NFW model in such a comparison.
Keywords
Cite
@article{arxiv.astro-ph/0604126,
title = {Empirical testing of Tsallis' Thermodynamics as a model for dark matter halos},
author = {Dario Nunez and Roberto A. Sussman and Jesus Zavala and Luis G. Cabral-Rosetti and Tonatiuh Matos},
journal= {arXiv preprint arXiv:astro-ph/0604126},
year = {2009}
}
Comments
5 pages, 1 figure, To appear in the Proceedings of X Mexican Workshop on Particles and Fields, Morelia Michoac\'an, M\'exico, November 7-12, 2005