Mathematics – Logic
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21913004h&link_type=abstract
American Astronomical Society, AAS Meeting #219, #130.04
Mathematics
Logic
Scientific paper
Weak lensing magnification is an emerging technique to study the dark sector of the Universe, especially at high redshifts. The unique CFHT Lensing Survey (CFHTLenS based on the raw data of the CFHTLS) data set has the quality to carry out the first astrophysically relevant magnification measurements. First I will summarise the efforts that went into the photometric redshift estimation in CFHTLenS, an indispensable ingredient not only for magnification-based but also for shear-based science projects. Then I will present measurements of the magnitude-shift induced by galaxies up to redshifts of z 1.4 which allow us to estimate their average dark matter and dust halos. I will give an outlook and show mass estimates of high-redshift clusters and cosmological measurements involving magnification tomography.
CFHTLenS Collaboration cfhtlens. org http://www.
Hildebrandt Hendrik
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