A deeper look into the structure of {\Lambda}CDM haloes: correlations between halo parameters from Einasto fits

Understand

We used high resolution dark matter only cosmological simulations to investigate the structural properties of Lambda Cold Dark Matter ($\Lambda$CDM) haloes over cosmic time.

• The haloes in our study range in mass from $\sim 10^{10}$ to $\sim 10^{12} \mathrm{M}_\odot$, and are resolved with $10^5$ to $10^7$ particles.
• We fit the spherically averaged density profiles of DM haloes with the three parameter Einasto function.
• For our sample of haloes, the Einasto shape parameter, $\alpha$, is uncorrelated with the concentration, $c$, at fixed halo mass, and at all redshifts.