924 citations · 16.4k across the 323 of their papers we have counts for
5 papers · 1 filter
Do arcs require flat halo cusps?
Matthias Bartelmann, Massimo Meneghetti
It was recently claimed that several galaxy clusters containing radial and tangential gravitational arcs and having a measured velocity-dispersion profile for the brightest cluster…
The impact of cluster mergers on arc statistics
Elena Torri, Massimo Meneghetti, Matthias Bartelmann +3
We study the impact of merger events on the strong lensing properties of galaxy clusters. Previous lensing simulations were not able to resolve dynamical time scales of cluster len…
Numerical study of halo concentrations in dark-energy cosmologies
Klaus Dolag, Matthias Bartelmann, Francesca Perrotta +4
We study the concentration parameters, their mass dependence and redshift evolution, of dark-matter halos in different dark-energy cosmologies with constant and time-variable equat…
Arc statistics with realistic cluster models
Massimo Meneghetti, Matthias Bartelmann, Lauro Moscardini +3
Arc statistics is known to be a powerful cosmological tool. Numerical lensing simulations show that orders of magnitude differences in the number of {\em giant} arcs on the whole s…
cD galaxy contribution to the strong lensing cross sections of galaxy clusters
Massimo Meneghetti, Matthias Bartelmann, Lauro Moscardini
We perform ray-tracing simulations evaluating the effect of a cD galaxy on the strong lensing properties of five galaxy cluster halos obtained from N-body simulations. The cD galax…