1998/08/31 by M. V. Sazhin, Sazhin, M. V., A. V. Toporensky +1
Earth and Planetary Sciences · Physics and Astronomy · #Astrophysics (astro-ph) #Cosmology and Gravitation Theories #FOS: Physical sciences #Geophysics and Gravity Measurements #Radio Astronomy Observations and Technology #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9808352
9 pages with 1 eps figure To appear in Astronomy Letters
arxiv created 1998/08/31 · openalex publication_date 1998/08/31 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The cosmic microwave background (CMB) polarization, whose experimental detection must become the next natural step in the study of the CMB radiation, depends on the dynamics of hydrogen recombination in the Universe, on the relation between the power of scalar perturbations and gravitational waves, and on the presence or absence of secondary ionization. The spectrum of the CMB anisotropy is currently known with an accuracy that is high enough to draw some conclusions about the cosmological parameters and about the presence of secondary ionization of matter. The reduction of observational data strongly suggests the presence of secondary ionization. We consider the effect of this ionization at redshifts z<100 on the CMB polarization generated by the scalar mode on various angular scales.