Circular velocity profiles of dark matter haloes

摘要: We use a high-resolution simulation of galaxy-sized dark matter halo, published simulated data as well four cluster-sized haloes from Fukushige, Kawai & Makino to study the inner halo structure in A cold cosmology. find that circular velocity curves are substantially better described by Stoehr et al. (SWTS) profiles than Navarro, Frenk White (NFW) or Moore profiles. Our findings confirm no asymptotic slope is reached and nearly universal, but not perfectly. The curve at constant rate log (r) over full converged range radii corresponding extrapolated density reach finite maximum density. claim strong discrepancy between observed slopes low surface brightness galaxies their counterparts on grounds currently available observations simulations unfounded. In addition, if SWTS profile turns out be good description for regions cannot probed with today, then even these agreement very reasonable.