1301.0475 (András Kovács et al.)

Cross-correlation of WMAP7 and the WISE Full Data Release    [PDF]

András Kovács, István Szapudi, Benjamin R. Granett, Zsolt Frei

We measured the cross-correlation of the Wilkinson Microwave Anisotropy Probe (WMAP) 7 year temperature map and the full sky data release of the Wide-field Infrared Survey Explorer (WISE) galaxy map. Using careful mapmaking and masking techniques we find a positive cross-correlation signal. The results are fully consistent with a Lambda-CDM Universe, although not statistically significant. Our findings are robust against changing the galactic latitude cut from |b|>10 to |b|>20 and no color dependence was detected when we used WMAP Q, V or W maps. We confirm higher significance correlations found in the preliminary data release. The change in significance is consistent with cosmic variance.

View original: http://arxiv.org/abs/1301.0475