2000/03/31 by F. Siddhartha Guzman, Tonatiuh Matos, Dario Nunez +1 · 1 citation
Physics and Astronomy · #astro-ph
published as Rev.Mex.Fis. 49 (2003) 203-206 · 4 pages, no figures. Requires REVTeX. Misprints corrected and references updated
arxiv created 2000/04/10 · arxiv updated 2009/12/01
Through the geodesic analysis of a static and axially symmetric space time, we present conditions on the state equation of an isotropic perfect fluid p=ωd, when it is considered as dark matter in spiral galaxies. The main conclusion is that it can be an exotic fluid (-1<ω<-1/3) as it is found for Quintessence at cosmological scale.