Kavli Affiliate: Toshiya Namikawa
| First 5 Authors: Toshiya Namikawa, Ippei Obata, , ,
| Summary:
We consider the polarized Sunyaev-Zel’dovich (pSZ) effect for a tomographic
probe of cosmic birefringence, including all relevant terms of the pSZ effect
in the CMB observables, some of which were ignored in the previous works. The
pSZ effect produces late-time polarization signals from the scattering of the
local temperature quadrupole seen by an electron. We forecast the expected
constraints on cosmic birefringence at the late time of the universe with the
pSZ effect. We find that the birefringence angles at $2lesssim zlesssim 5$
are constrained at a sub-degree level by the cross-correlations between CMB
$E$- and $B$-modes or between CMB $B$-modes and remote quadrupole $E$-modes
using data from LiteBIRD, CMB-S4, and LSST. In particular, the
cross-correlation between large-scale CMB $B$-modes and remote-quadrupole
$E$-modes has a much smaller bias from the Galactic foregrounds and is useful
to cross-check the results from the $EB$ power spectrum.
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