10 papers · 1 filter
The ART of Cosmological Simulations
Stefan Gottloeber, Anatoly Klypin
We describe the basic ideas of MPI parallelization of the N-body Adaptive Refinement Tree (ART) code. The code uses self-adaptive domain decomposition where boundaries of the domai…
The time-delay of the gravitationally lensed double quasar UM 673
T. A. Akhunov, R. W. Schmidt, O. Burkhonov +11
The paper has been withdrawn because double checking and comparison with other data sets after the original submission showed that a broken R-band filter at the Maidanak telescope…
Mass modelling of galaxy clusters via velocity moments
Ewa L. Lokas, Radoslaw Wojtak, Gary A. Mamon +1
We summarize the method of mass modelling of galaxy clusters based on reproducing the dispersion and kurtosis of the projected velocity distribution of galaxies. The models are par…
Shape, spin and baryon fraction of clusters in the MareNostrum Universe
Stefan Gottloeber, Gustavo Yepes
The MareNostrum Universe is one of the largest cosmological SPH simulation done so far. It consists of dark and gas particles in a box of 500 Mpc on a si…
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…