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Empirical testing of Tsallis' Thermodynamics as a model for dark matter halos

Dario Nunez·Roberto A. Sussman·Jesus Zavala·Luis G. Cabral-Rosetti·Tonatiuh Matos
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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.

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Dario Nunez, Roberto A. Sussman, Jesus Zavala, Luis G. Cabral-Rosetti, Tonatiuh Matos. 2006-04-06. Empirical testing of Tsallis' Thermodynamics as a model for dark matter halos. https://doi.org/10.1063/1.2359275

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