64 citations · 148 across the 6 of their papers we have counts for
4 papers · 1 filter
Weak lensing by galaxy troughs in DES Science Verification data
D. Gruen, O. Friedrich, A. Amara +89
We measure the weak lensing shear around galaxy troughs, i.e. the radial alignment of background galaxies relative to underdensities in projections of the foreground galaxy field o…
A further study on Palatini f(R)-theories for polytropic stars
Annalisa Mana, Lorenzo Fatibene, Marco Ferraris
After briefly reviewing the results about polytropic stars in Palatini f(R)-theories, we first show how these results rely on the assumption of a regular function f(R). In particul…
Environment-based selection effects of Planck clusters
Ralf Kosyra, Daniel Gruen, Stella Seitz +5
We investigate whether the large scale structure environment of galaxy clusters imprints a selection bias on Sunyaev Zel'dovich (SZ) catalogs. Such a selection effect might be caus…
Cosmic variance of the galaxy cluster weak lensing signal
D. Gruen, S. Seitz, M. R. Becker +2
Intrinsic variations of the projected density profiles of clusters of galaxies at fixed mass are a source of uncertainty for cluster weak lensing. We present a semi-analytical mode…