Speaker
Mr
Ziang Yan
(UBC)
Description
This study is basically a noise analysis in an existing result. We reconstructed a $y$ map using NILC method to null CMB and galactic dust signal. We then constructed a CIB-subtracted $y$ map. We estimated the fraction of CIB contamination in the $\kappa-y$ cross-correlation in the reconstructed $y$ map by comparing the cross correlation signal in the two $y$ maps. The result suggest that The result suggests that $\kappa-\mathrm{CIB}$ contributes $7.75\%\pm5.21\%$ with only $1.87\sigma$ significance. So the reconstructed $y$ map is not significantly contaminated by CIB.
Primary authors
Mr
Ziang Yan
(UBC)
Dr
Alireza Hojjati
(UBC)
Prof.
Gary Hinshaw
(UBC)
Prof.
Ludovic van Waerbeke
(UBC)
