作者: T Giannantonio , P Fosalba , R Cawthon , Y Omori , M Crocce
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摘要: We measure the cross-correlation between galaxy density in Dark Energy Survey (DES) Science Verification data and lensing of cosmic microwave background (CMB) as reconstructed with Planck satellite South Pole Telescope (SPT). When using DES main sample over full redshift range 0.2 2sigma) detections all bins. Comparing to fiducial cosmology, we find evolution signal matches expectations, although amplitude is consistently lower than predicted across test for possible systematics that could affect our result no evidence significant contamination. Finally, demonstrate how these measurements can be used constrain growth structure time. are fit by a model which z< 1.2 universe 0.73 ± 0.16 times large Lambda cold dark matter 1.7sigma deviation.