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Cosmic shear and biasing
Peter Schneider
The correlation between cosmic shear as measured by the image distortion of high-redshift galaxies and the number counts of foreground galaxies is calculated. For a given power spe…
A new measure for cosmic shear
Peter Schneider, Ludovic van Waerbeke, Bhuvnesh Jain +1
We consider here a new statistical measure for cosmic shear, the aperture mass Map, which is defined as a spatially filtered projected density field and which can be measured direc…
Evidence for substructure in lens galaxies?
Shude Mao, Peter Schneider
We discuss whether one should expect that multiply imaged QSOs can be understood with `simple' lens models which contain a handful of parameters. Whereas for many lens systems such…
Constraining the Mass Distribution of Cluster Galaxies by Weak Lensing
Bernhard Geiger, Peter Schneider
Analysing the weak lensing distortions of the images of faint background galaxies provides a means to constrain the average mass distribution of cluster galaxies and potentially to…
The cosmological lens equation and the equivalent single-plane gravitational lens
Peter Schneider
The gravitational lens equation resulting from a single (non-linear) mass concentration (the main lens) plus inhomogeneities of the large-scale structure is shown to be strictly eq…
Constraining the Mass Distribution of Cluster Galaxies by Weak Lensing
Bernhard Geiger
Analysing the weak lensing distortions of the images of faint background galaxies provides a means to constrain the mass distribution of cluster galaxies and potentially to test th…