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Arc Statistics with Realistic Cluster Potentials. II. Influence of Cluster Asymmetry and Substructure
Matthias Bartelmann, Matthias Steinmetz, Achim Weiss
We construct a sample of numerical models for clusters of galaxies and employ these to investigate their capability of imaging background sources into long arcs. Emphasis is laid o…
On the spin parameter of dark-matter haloes
Matthias Steinmetz, Matthias Bartelmann
The study by White (1984) on the growth of angular momentum in dark haloes is extended towards a more detailed investigation of the spin parameter .…
Simulating Self-gravitating Hydrodynamic Flows
Ewald Mueller, Matthias Steinmetz
An efficient algorithm for solving Poisson's equation in two and three spatial dimensions is discussed. The algorithm, which is described in detail, is based on the integral form o…
The Formation of Galaxies: A Challenge for Supercomputers -- a Simple Task for GRAPE ?
Matthias Steinmetz
We present numerical simulations of galaxy formation, one of the most challenging problems in computational astrophysics. The key point in such simulations is the efficient solutio…