Mathematics – Logic
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21720401b&link_type=abstract
American Astronomical Society, AAS Meeting #217, #204.01; Bulletin of the American Astronomical Society, Vol. 43, 2011
Mathematics
Logic
Scientific paper
We present cosmological results from the recently-completed WiggleZ Dark Energy Survey at the Anglo-Australian Telescope. We have obtained spectroscopic redshifts for over 200,000 star-forming galaxies over 1000 square degrees up to redshift z=1. We measure the imprint of baryon acoustic oscillations in the galaxy distribution at the highest redshift to date, and use our detection as a standard ruler mapping the cosmic expansion history. We also exploit redshift-space distortions in the pattern of galaxy clustering to measure the growth rate of cosmic structure across the redshift range z < 1, recovering the first precise measurements in the intermediate-redshift Universe. This combination of cosmic distance and growth measurements allows us to make a powerful self-consistency test of the physical nature of dark energy, spanning the whole epoch for which it is thought to dominate cosmic dynamics.
Blake Chris
WiggleZ Dark Energy Survey Team
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