Chris Blake, Swinburne ()
"The cosmic distance scale and growth rate at z=0.6 from the WiggleZDark Energy Survey"
Abstract. We presentcosmological results from the nearly-completed WiggleZ Dark Energy Survey at the AAT. We have obtained spectroscopic redshifts for over 200,000 star-forming galaxies over 1000 sq deg 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.
Held in the AAO Conference room at 03:30 PM on Thursday, 28 October 2010back