Cosmic Emulation: The Concentration-Mass Relation for wCDM Universes

Understand

The concentration-mass relation for dark matter-dominated halos is one of the essential results expected from a theory of structure formation.

• We present a simple prediction scheme, a cosmic emulator, for the c-M relation as a function of cosmological parameters for wCDM models.
• The emulator is constructed from 37 individual models, with three nested N-body gravity-only simulations carried out for each model.
• The mass range covered by the emulator is 2 x 10^{12} M_sun < M <10^{15} M_sun with a corresponding redshift range of z=0 -1.