590 citations · 2.3k across the 33 of their papers we have counts for
6 papers · 1 filter
Large scatter in X-ray emission among elliptical galaxies: correlations with mass of host halo
W. G. Mathews, F. Brighenti, A. Faltenbacher +4
The enormous range of X-ray luminosities among elliptical galaxies with similar optical luminosities can be attributed to large scatter and systematic variations in the dark halo m…
Evolution of Characteristic Quantities for Dark Matter Halo Density Profiles
Emilio Romano-Diaz, Yehuda Hoffman, Clayton Heller +3
We investigate the effect of an assembly history on the evolution of dark matter (DM) halos of 10^{12} Msun/h using Constrained Realizations of random Gaussian fields. Five differe…
Oscillatory relaxation of a merging galaxy cluster
A. Faltenbacher, S. Gottloeber, W. G. Mathews
Within the cosmic framework clusters of galaxies are relatively young objects. Many of them have recently experienced major mergers. Here we investigate an equal mass merging event…
The concentration-velocity dispersion relation in galaxy groups
Andreas Faltenbacher, William G. Mathews
Based on results from cold dark matter N-body simulations we develop a dynamical model for the evolution of subhaloes within host haloes of galaxy groups. Only subhaloes more massi…
Entropy of gas and dark matter in galaxy clusters
A. Faltenbacher, Y. Hoffman, S. Gottloeber +1
On the basis of a large scale 'adiabatic', namely non-radiative and non-dissipative, cosmological smooth particle hydrodynamic simulation we compare the entropy profiles of the gas…
Velocity distributions in clusters of galaxies
A. Faltenbacher, J. Diemand
We employ a high-resolution dissipationless N-body simulation of a galaxy cluster to investigate the impact of subhalo selection on the resulting velocity distributions. Applying a…