Beyond CMB cosmic variance limits on reionization with the polarized Sunyaev-Zel'dovich effect

Joel Meyers, P. Daniel Meerburg, Alexander Van Engelen, Nicholas Battaglia

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Upcoming cosmic microwave background (CMB) surveys will soon make the first detection of the polarized Sunyaev-Zel'dovich effect, the linear polarization generated by the scattering of CMB photons on the free electrons present in collapsed objects. Measurement of this polarization along with knowledge of the electron density of the objects allows a determination of the quadrupolar temperature anisotropy of the CMB as viewed from the space-time location of the objects. Maps of these remote temperature quadrupoles have several cosmological applications. Here we propose a new application: the reconstruction of the cosmological reionization history. We show that with quadrupole measurements out to redshift 3, constraints on the mean optical depth can be improved by an order of magnitude beyond the CMB cosmic variance limit.

Original languageEnglish (US)
Article number103505
JournalPhysical Review D
Volume97
Issue number10
DOIs
StatePublished - May 15 2018
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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