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We use the Millennium Simulation to measure the cross-correlation between halo centres and mass (or equivalently the average density profiles of dark haloes) in a LCDM cosmology.
- We present results for radii in the range 10 kpc/h < r < 30 Mpc/h for halo masses in the range 4e10 Msol/h < M200 < 4e14 Msol/h.
- Both at z=0 and at z=0.76 these cross-correlations are surprisingly well fit by approximating the inner region by a density profile of NFW or Einasto form, the outer region by a biased version of the linear mass autocorrelation function, and by adopting the maximum of the two where they are comparable.
- We use a simulation of the formation of galaxies within the Millennium Simulation to explore how these results are reflected in cross-correlations between galaxies and mass.
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Trudy Inst. Astrofiz. Alma-Ata
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in R. Schaeffer, J. Silk, M. Spiro, and J. Zinn-Justin (eds.), Les Houches Session LX, Cosmology and Large Scale Structure
White, S.: 1996, · 1996
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Gao, L. and White, S. D. M.: 2007, · 2007
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Neto, A. F., Gao, L., Bett, P., Cole, S., Navarro, J. F., Frenk, C. S., White, S. D. M., Springel, V., and Jenkins, A.: 2007, · 2007
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