289 citations · 1.5k across the 66 of their papers we have counts for
8 papers · 1 filter
Environmental dependence of ellipticity correlation functions of intrinsic alignments
Robert Reischke, Björn Malte Schäfer
In this work we investigate the environmental dependence of the intrinsic ellipticity correlations in cosmic shear surveys. We use the quadratic and linear alignment model to descr…
Influence of the local Universe on weak gravitational lensing surveys
Robert Reischke, Björn malte Schäfer, Krzysztof Bolejko +2
Observations of the large-scale structure (LSS) implicitly assume an ideal FLRW observer with the ambient structure having no influence on the observer. However, due to correlation…
The Dark Universe - Exercises and Proceedings from the German-Italian WE Heraeus Summer School held in 2017 in Heidelberg
Stefan S. Brems, Björn Malte Schäfer, Niccolò Bucciantini +4
The Heraeus Summer School series "Astronomy from four perspectives", funded by the WE Heraeus Foundation, draws together teachers and teacher students, astronomers, physicists and…
3D cosmic shear: numerical challenges, 3D lensing random fields generation and Minkowski Functionals for cosmological inference
A. Spurio Mancini, P. L. Taylor, R. Reischke +5
Cosmic shear - the weak gravitational lensing effect generated by fluctuations of the gravitational tidal fields of the large-scale structure - is one of the most promising tools f…
Statistical separation of weak gravitational lensing and intrinsic ellipticities based on galaxy colour information
Tim M. Tugendhat, Robert Reischke, Bjoern Malte Schaefer
Intrinsic alignments of galaxies are recognised as one of the most important systematic in weak lensing surveys on small angular scales. In this paper we investigate ellipticity co…
Investigating scalar-tensor-gravity with statistics of the cosmic large-scale structure
Robert Reischke, Alessio Spurio Mancini, Björn Malte Schäfer +1
Future observations of the large-scale structure have the potential to investigate cosmological models with a high degree of complexity, including the properties of gravity on larg…
Gravitational corrections to light propagation in a perturbed FLRW-universe and corresponding weak lensing spectra
Carolina Cuesta-Lazaro, Arnau Quera-Bofarull, Robert Reischke +1
When the gravitational lensing of the large-scale structure is calculated from a cosmological model a few assumptions enter: one assumes that the photons follow unperturbed b…
Testing (modified) gravity with 3D and tomographic cosmic shear
A. Spurio Mancini, R. Reischke, V. Pettorino +2
Cosmic shear is one of the primary probes to test gravity with current and future surveys. There are two main techniques to analyse a cosmic shear survey; a tomographic method, whe…