6 papers
Simulations of the Local Universe
Stefan Gottloeber, Anatoly Klypin, Andrey Kravtsov +2
The theory of structure formation predicts that galaxies form within extended massive dark matter halos built from smaller pieces that collided and merged, resulting in the hierarc…
The evolution of groups and clusters
S. Gottloeber, A. Klypin, A. V. Kravtsov +1
Using high resolution N-body simulations we have studied the formation and evolution of clusters and groups in a LCDM cosmological model. Groups of galaxies have been formed alread…
Halo evolution in a cosmological environment
S. Gottloeber, A. A. Klypin, A. V. Kravtsov
We study the formation and evolution of the dark matter halos in a LCDM model. The dynamics of 16.8 million DM particles is followed numerically in a box of 60 Mpc/h with the dynam…
Evolution of isolated halos and halos inside of groups and clusters in a LCDM model
Stefan Gottloeber, Anatoly Klypin, Andrey Kravtsov
A significant fraction of mass in the universe is believed to be in the form of dark matter (DM). Due to gravitational instability, the DM collapses hierarchically into DM halos. I…
The Cross Correlation between the Gravitational Potential and the Large Scale Matter Distribution
Soeren Madsen, Andrei G. Doroshkevich, Stefan Gottloeber +1
The large scale gravitational potential distribution and its influence on the large-scale matter clustering is considered on the basis of six simulations. It is found that the mean…
Optimizing Higher-order Lagrangian Perturbation Theory for Cold Dark Matter Models
A. G. Weiss, S. Gottloeber, T. Buchert
We report on the performance of Lagrangian perturbation theory up to the second order for the standard cold dark matter (SCDM) and broken scale invariance (BSI) scenarios. We norma…