no code implementations • 3 Jun 2019 • Marcel P. van Daalen, Ian G. McCarthy, Joop Schaye
We conduct a detailed investigation of the dependence of the relative difference between the total matter power spectra in hydrodynamical and collisionless simulations on the effectiveness of stellar and AGN feedback, cosmology and redshift.
Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies
no code implementations • 6 Apr 2011 • Marcel P. van Daalen, Joop Schaye, C. M. Booth, Claudio Dalla Vecchia
Our simulation that includes AGN feedback, which we consider to be our most realistic simulation as, unlike those used in previous studies, it has been shown to solve the overcooling problem and to reproduce optical and X-ray observations of groups of galaxies, predicts a decrease in power relative to a dark matter only simulation ranging, at z=0, from 1% at k~0. 3 h/Mpc to 10% at k~1 h/Mpc and to 30% at k~10 h/Mpc.
Cosmology and Nongalactic Astrophysics
