On the Origin of the Inner Structure of Halos

  title={On the Origin of the Inner Structure of Halos},
  author={Alberto Manrique and Andreu Raig and Eduard Salvador-Sol{\'e} and Teresa Barber Sanch{\'i}s and Jos{\'e} Mar{\'i}a Solanes},
  journal={The Astrophysical Journal},
We calculate by means of the Press-Schechter formalism the density profile developed by dark matter halos during accretion, i.e., the continuous aggregation of small clumps. We find that the shape of the predicted profile is similar to that shown by halos in high-resolution cosmological simulations. Furthermore, the mass-concentration relation is correctly reproduced at any redshift in all the hierarchical cosmologies analyzed except for very large halo masses. The role of major mergers, which… 

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