1304.3474 (Alberto Vallinotto)

The synergy between the Dark Energy Survey and the South Pole Telescope    [PDF]

Alberto Vallinotto

The Dark Energy Survey (DES) has recently completed the Science Verification phase (SV), collecting data over 150 sq. deg. of sky. In this work we analyze to what extent it is beneficial to supplement the analysis of DES data with CMB lensing data. We provide forecasts for both DES-SV and for the full survey covering 5000 sq. deg. We show that data presently available from DES-SV and SPT-SZ would allow a ~8% measurement of the linear galaxy bias in four redshift bins. We further show that a joint analysis of cosmic shear, galaxy density and CMB lensing data allows to self calibrate the shear multiplicative bias and the linear galaxy bias to the percent or sub-percent level, depending on the quality of available data, fraction of overlap of the footprints and priors included in the analysis.

View original: http://arxiv.org/abs/1304.3474