no code implementations • 1 Feb 2021 • Aleksandra Kusiak, Boris Bolliet, Simone Ferraro, J. Colin Hill, Alex Krolewski
Using a new "asymmetric" estimator that combines different foreground-cleaned CMB maps to maximize the signal-to-noise, we measure the kSZ$^2$-galaxy cross-power spectrum for three subsamples of the \emph{unWISE} galaxy catalog, which peak at mean redshifts $z \approx$ 0. 6, 1. 1, and 1. 5, have average halo mass $\sim 1$-$5\times 10^{13}$ $h^{-1} M_{\odot}$, and in total contain over 500 million galaxies.
Cosmology and Nongalactic Astrophysics
