M
Matthias Bartelmann
Researcher at Heidelberg University
Publications - 469
Citations - 31330
Matthias Bartelmann is an academic researcher from Heidelberg University. The author has contributed to research in topics: Galaxy cluster & Weak gravitational lensing. The author has an hindex of 77, co-authored 463 publications receiving 29828 citations. Previous affiliations of Matthias Bartelmann include ITA Software & University of Bonn.
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Journal Article
High spatial resolution in three dimensions: A Challenge for large-scale structure formation models
TL;DR: In this article, a link of large-scale distributions of galaxies to galactic scales is constructed by treating high spatial resolution calculations of semi-analytical models for the formation of large scale structure, which allow for the realization of this link in 3D.
Journal Article
Arc statistics with realistic cluster potentials. III. A systematic effect on cluster mass estimates.
TL;DR: In this article, it is shown that deviations of galaxy cluster lenses from spherical symmetry can render mass estimates for galaxy clusters based on the formation of large arcs systematically to high, and that deviations from radial symmetry will in general decrease the required lens mass.
Journal ArticleDOI
Divergence cleaning techniques in smoothed particle magnetohydrodynamics simulations
TL;DR: In this paper, a smoothed Particle Magnetohydrodynamics (SPMHD) algorithm for treating magnetic shocks in clusters of galaxies is presented, in particular the treatment of a nonvanishing divergence of B is discussed because of its appearance due to numerical errors.
Posted Content
Joint reconstruction of galaxy clusters from gravitational lensing and thermal gas. II. Inversion of the thermal Sunyaev-Zel'dovich effect
TL;DR: In this paper, Richardson-Lucy deconvolution is used to convert the intensity change of the CMB due to the thermal SunyaevZelovich e ect into an estimate for the two-dimensional gravitational potential.
Journal Article
On Computer Simulation, with Particular Regard to their Application in Contemporary Astrophysics
TL;DR: This survey contribution considers and discusses computer simulations from a variety of perspectives with particular attention to computer simulations in astrophysics and cosmology and concludes with the conjecture that computer simulations are technically amplified gedankenexperiments (thought experiments).