Mathematics – Logic
Scientific paper
Sep 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011head...12.4601m&link_type=abstract
American Astronomical Society, HEAD meeting #12, #46.01
Mathematics
Logic
Scientific paper
Gas mass fractions of massive, dynamically relaxed clusters, measured through X-ray observations, are a powerful tool for measuring cosmic distances, and have provided strong constraints both on the mean dark matter density and on dark energy. Since the last major work on this subject in 2008, the total Chandra exposure for suitably relaxed clusters has doubled. In conjunction with improved modeling and analysis techniques, this expanded data set provides precise constraints on cosmic distances, extending to redshifts greater than unity. I will report updated cosmological constraints from this work, and associated astrophysical studies using the data.
Allen Steven W.
Mantz Adam
Morris Richard G.
Rapetti David
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