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The 400d Galaxy Cluster Survey Weak Lensing Programme: I: MMT/Megacam Analysis of CL0030+2618 at z=0.50
Holger Israel, Thomas Erben, Thomas H. Reiprich +7
The mass function of galaxy clusters at high redshifts is a particularly useful probe to learn about the history of structure formation and constrain cosmological parameters. We ai…
Evidence for the accelerated expansion of the Universe from weak lensing tomography with COSMOS
Tim Schrabback, Jan Hartlap, Benjamin Joachimi +19
We present a tomographic cosmological weak lensing analysis of the HST COSMOS Survey. Applying our lensing-optimized data reduction, principal component interpolation for the ACS P…
Focusing Cosmic Telescopes: Exploring Redshift z~5-6 Galaxies with the Bullet Cluster 1E0657-56
M. Bradač, T. Treu, D. Applegate +7
The gravitational potential of clusters of galaxies acts as a cosmic telescope allowing us to find and study galaxies at fainter limits than otherwise possible and thus probe close…
Measuring cosmic shear with the ring statistics
Tim Eifler, Peter Schneider, Elisabeth Krause
Commonly used methods to decompose E- and B-modes in cosmic shear, namely the aperture mass dispersion and the E/B-mode shear correlation function, suffer from incomplete knowledge…
A fitting formula for the non-Gaussian contribution to the lensing power spectrum covariance
J. Pielorz, J. Rödiger, I. Tereno +1
Weak gravitational lensing is one of the most promising tools to investigate the equation-of-state of dark energy. In order to obtain reliable parameter estimations for current and…
Bispectrum covariance in the flat-sky limit
B. Joachimi, X. Shi, P. Schneider
To probe cosmological fields beyond the Gaussian level, three-point statistics can be used, all of which are related to the bispectrum. Hence, measurements of CMB anisotropies, gal…