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
1 code implementation • 3 Dec 2017 • Boris Bolliet, Barbara Comis, Eiichiro Komatsu, Juan Francisco Macías-Pérez
Finally, by combining the tSZ power spectrum and the CMB data we find, in the $\Lambda$ Cold Dark Matter (CDM) model, the mass bias of $B=1. 71\pm 0. 17$, i. e., $1-b=0. 58\pm 0. 06$ (68% CL).
Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies
