Israel, Holger, Erben, Thomas, Reiprich, Thomas H., Vikhlinin, Alexey, Hildebrandt, Hendrik, Hudson, Daniel S., ...
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 aim at deriving...
Schrabback, Tim, Hartlap, Jan, Joachimi, Benjamin, Kilbinger, Martin, Simon, Patrick, Benabed, Karim, ...
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 PSF, and improved...
Handbook for the GREAT08 Challenge: An image analysis competition for cosmological lensing (2008)
Bridle, Sarah, Shawe-Taylor, John, Amara, Adam, Applegate, Douglas, Balan, Sreekumar T., Berge, Joel, ...
The GRavitational lEnsing Accuracy Testing 2008 (GREAT08) Challenge focuses on a problem that is of crucial importance for future observations in cosmology. The shapes of distant galaxies can be used...
Studying the Nature of Dark Energy with Galaxy Clusters (2008)
Thomas H. Reiprich, Daniel S. Hudson, Thomas Erben, Craig L. Sarazin
Summary. We report on the status of our effort to constrain the nature of dark energy through the evolution of the cluster mass function. Chandra temperature profiles for 31 clusters from a local...
Dark Matter and Baryons in the Most X-ray Luminous and Merging Galaxy Cluster RX J1347.5-1145 (2007)
Bradač, Maruša, Schrabback, Tim, Erben, Thomas, McCourt, Michael, Million, Evan, Mantz, Adam, ...
The galaxy cluster RX J1347-1145 is one of the most X-ray luminous and most massive clusters known. Its extreme mass makes it a prime target for studying issues addressing cluster formation and...
Cluster Mass Profiles from Weak Lensing: Shear vs. Magnification Information (2007)
Peter Schneider, Lindsay King, Thomas Erben
A massive foreground cluster lens changes the shapes (shear effect) and number density (magnification effect) of the faint background galaxy population. In this paper we investigate how the shear,...
Cosmological Constraints From the 100 Square Degree Weak Lensing Survey (2007)
Benjamin, Jonathan, Heymans, Catherine, Semboloni, Elisabetta, Van Waerbeke, Ludovic, Hoekstra, Henk, Erben, Thomas, ...
We present a cosmic shear analysis of the 100 square degree weak lensing survey, combining data from the CFHTLS-Wide, RCS, VIRMOS-DESCART and GaBoDS surveys. Spanning ~100 square degrees, with a...
The Shear TEsting Programme 2: Factors affecting high precision weak lensing analyses (2006)
Massey, Richard, Heymans, Catherine, Berge, Joel, Bernstein, Gary, Bridle, Sarah, Clowe, Douglas, ...
The Shear TEsting Programme (STEP) is a collaborative project to improve the accuracy and reliability of weak lensing measurement, in preparation for the next generation of wide-field surveys. We...
Schirmer, Mischa, Erben, Thomas, Hetterscheidt, Marco, Schneider, Peter
The aim of the present work is the construction of a mass-selected galaxy cluster sample based on weak gravitational lensing methods. This sample will be subject to spectroscopic follow-up...
Studying the Nature of Dark Energy with Galaxy Clusters (2006)
Reiprich, Thomas H., Hudson, Daniel S., Erben, Thomas, Sarazin, Craig L.
We report on the status of our effort to constrain the nature of dark energy through the evolution of the cluster mass function. Chandra temperature profiles for 31 clusters from a local cluster...
The Shear Testing Programme - I. Weak lensing analysis of simulated ground-based observations (2006)
Heymans, Catherine, Van Waerbeke, Ludovic, Bacon, David, Berge, Joel, Bernstein, Gary, Bertin, Emmanuel, ...
The Shear Testing Programme (STEP) is a collaborative project to improve the accuracy and reliability of all weak lensing measurements in preparation for the next generation of wide-field surveys. In...
The Shear TEsting Programme 1: Weak lensing analysis of simulated ground-based observations (2005)
Heymans, Catherine, Van Waerbeke, Ludovic, Bacon, David, Berge, Joel, Bernstein, Gary, Bertin, Emmanuel, ...
The Shear TEsting Programme, STEP, is a collaborative project to improve the accuracy and reliability of all weak lensing measurements in preparation for the next generation of wide-field surveys. In...
Galaxy-galaxy lensing studies from COMBO-17 (2005)
Kleinheinrich, Martina, Rix, Hans-Walter, Schneider, Peter, Erben, Thomas, Meisenheimer, Klaus, Wolf, Christian, ...
We study the dark matter halos of galaxies with galaxy-galaxy lensing using the COMBO-17 survey. This survey offers an unprecedented data set for studying lens galaxies at z=0.2-0.7 including...
The galaxy-dark matter bias in the Garching-Bonn Deep Survey (2004)
Simon, Patrick, Schneider, Peter, Erben, Thomas, Schirmer, Mischa, Wolf, Christian, Meisenheimer, Klaus
We measured the bias and correlation factor of galaxies with respect to the dark matter using the aperture statistics including the aperture mass from weak gravitational lensing. The analysis was...
Galaxy-galaxy lensing studies from COMBO-17 (2004)
Kleinheinrich, Martina, Rix, Hans-Walter, Schneider, Peter, Erben, Thomas, Meisenheimer, Klaus, Wolf, Christian, ...
We study the dark matter halos of galaxies with galaxy-galaxy lensing using the COMBO-17 survey. This survey offers an unprecedented data set for studying lens galaxies at z=0.2-0.7 including...
Schirmer, Mischa, Erben, Thomas, Schneider, Peter, Wolf, Christian, Meisenheimer, Klaus
We report the first confirmation of colour-selected galaxy cluster candidates by means of weak gravitational lensing. Significant lensing signals were identified in the course of the shear-selection...
Schirmer, Mischa, Erben, Thomas, Schneider, Peter, Pietrzynski, Grzesiek, Gieren, Wolfgang, Micol, Alberto, ...
The Garching-Bonn Deep Survey (GaBoDS) is a virtual 12 square degree cosmic shear and cluster lensing survey, conducted with the WFI@2.2m MPG/ESO telescope at La Silla. It consists of shallow, medium...
Galaxy-galaxy lensing results from COMBO-17 (2003)
Kleinheinrich, Martina, Schneider, Peter, Erben, Thomas, Schirmer, Mischa, Rix, Hans-Walter, Meisenheimer, Klaus, ...
We use galaxy-galaxy lensing to study the statistical properties of the dark matter halos of galaxies. Our data is taken from the COMBO-17 survey which has imaged 1 square degree in 17 optical...
Measuring dark matter halos using galaxy-galaxy lensing (2003)
Kleinheinrich, Martina, Schneider, Peter, Rix, Hans-Walter, Erben, Thomas, Wolf, Christian, Meisenheimer, Klaus, ...
Weak lensing study of Abell 2029 (2002)
Menard, Brice, Erben, Thomas, Mellier, Yannick
Abell 2029 is one of the most studied clusters due to its proximity (z=0.07), its strong X-ray brightness and its giant cD galaxy which is one of the biggest stellar aggregates we know. We present...
Galaxy-galaxy lensing in the FORS Deep Field (2002)
Stella Seitz Thomas, Thomas Erben, Ralf Bender
We demonstrate the presence of a galaxy-galaxy lensing signal of z = 0.5 1.0 foreground galaxies by analyzing the distortion of z = 2.5 4.5 background galaxies in the FORS Deep Field. The signal...
How accurately can we measure weak gravitational shear? (2000)
Erben, Thomas, Van Waerbeke, Ludovick, Bertin, Emmanuel, Mellier, Yannick, Schneider, Peter
With the recent detection of cosmic shear, the most challenging effect of weak gravitational lensing has been observed. The main difficulties for this detection were the need for a large amount of...
Cluster mass profiles from weak lensing: shear vs. magnification information (1999)
Schneider, Peter, King, Lindsay, Erben, Thomas
A massive foreground cluster lens changes the shapes (shear effect) and number density (magnification effect) of the faint background galaxy population. In this paper we investigate how the shear,...
Poröser Glasionomerzement als Antibiotikadepot. (1992)
Mikroreprod. eines Ms. 57, [5] Bl. : graph. Darst.