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Proceedings of Identification of Dark Matter 2010 — PoS(IDM2010)
We study the matter distribution in and around dark halos in the standard Λ cold dark matter (ΛCDM) universe. We use the outputs of high resolution N-body simulations to compute the mean surface density profile around galactic size dark matter halos. The result is compared with the observed surface density profile from the lensing magnification measurement of quasars in Sloan Digital Sky Survey (SDSS) recently reported by Ménard et al. (2010) . We show that the ΛCDM simulations reproduce thedoi:10.22323/1.110.0080 fatcat:j6uyqwxfpvew5gl73d4hs4aziq