881 citations · 2.9k across the 20 of their papers we have counts for
14 papers · 1 filter
Intrinsic galaxy shapes and alignments II: Modelling the intrinsic alignment contamination of weak lensing surveys
B. Joachimi, E. Semboloni, S. Hilbert +4
Intrinsic galaxy alignments constitute the major astrophysical systematic of forthcoming weak gravitational lensing surveys but also yield unique insights into galaxy formation and…
Probing Satellite Halos with Weak Gravitational Lensing
Bryan R. Gillis, Michael J. Hudson, Stefan Hilbert +1
We demonstrate the possibility of detecting tidal stripping of dark matter subhalos within galaxy groups using weak gravitational lensing. We have run ray-tracing simulations on ga…
Intrinsic galaxy shapes and alignments I: Measuring and modelling COSMOS intrinsic galaxy ellipticities
B. Joachimi, E. Semboloni, P. E. Bett +5
The statistical properties of the ellipticities of galaxy images depend on how galaxies form and evolve, and therefore constrain models of galaxy morphology, which are key to the r…
Cosmic shear covariance: The log-normal approximation
Stefan Hilbert, Jan Hartlap, Peter Schneider
[Abridged] We seek approximations to the cosmic shear covariance that are as easy to use as the common approximations based on normal statistics, but yield more accurate covariance…
Probing the dark-matter halos of cluster galaxies with weak lensing
E. Pastor Mira, S. Hilbert, J. Hartlap +1
Context: Understanding the evolution of the dark matter halos of galaxies after they become part of a cluster is essential for understanding the evolution of these satellite galaxi…
The origin of peak-offsets in weak-lensing maps
J. P. Dietrich, A. Böhnert, M. Lombardi +2
Centroid positions of peaks identified in weak lensing mass maps often show offsets with respect to other means of identifying halo centres, like position of the brightest cluster…