2006/08/29 by Leonid Chuzhoy, Chuzhoy, Leonid
Physics and Astronomy · #Galaxies: Formation, Evolution, Phenomena #Scientific Research and Discoveries #Stellar, planetary, and galactic studies
paper · pdf · doi:10.48550/arxiv.astro-ph/0608637
We derive the density profile of cold dark matter halos using a self-similar\naccretion model. We show that if the clumpiness of the infalling matter is\ntaken into account, then the inner density slope, d(logrho)/d(logr), is\nclose to -1. Compared with the density profiles predicted by different\nnumerical simulations, we find that outside ~0.1% of the virial radius, our\nsolutions agree best with the fitting formula proposed by Navarro et al.\n(2004), d(lnrho)/d(lnr)=-2(r/R)0.17, where R is a characteristic radius,\ninside which the density profile becomes shallower than isothermal.\n