English

Cosmic birefringence tomography with polarized Sunyaev Zel'dovich effect

Cosmology and Nongalactic Astrophysics 2024-12-30 v2

Abstract

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 cosmic microwave background (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 2z52\lesssim z\lesssim 5 are constrained at a subdegree level by the cross-correlations between CMB EE- and BB-modes or between CMB BB-modes and remote quadrupole EE-modes using data from LiteBIRD, CMB-S4, and LSST. In particular, the cross-correlation between large-scale CMB BB-modes and remote-quadrupole EE-modes has a much smaller bias from the Galactic foregrounds and is useful to cross-check the results from the EBEB power spectrum.

Keywords

Cite

@article{arxiv.2306.08875,
  title  = {Cosmic birefringence tomography with polarized Sunyaev Zel'dovich effect},
  author = {Toshiya Namikawa and Ippei Obata},
  journal= {arXiv preprint arXiv:2306.08875},
  year   = {2024}
}

Comments

9 pages, 5 figures, accepted for publication in Physical Review D

R2 v1 2026-06-28T11:05:35.820Z