Stokes parameters spectral distortions due to the Sunyaev-Zel’dovich effect and an independent estimation of the CMB low multipoles

We consider the Stokes parameters' frequency spectral distortions arising due to Compton scattering of the anisotropic cosmic microwave background (CMB) radiation, the Sunyaev-Zel'dovich effect (SZ), towards clusters of galaxies. We single out a very special type of such distortions and fi...

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Bibliographic Details
Published in:Physical review. D 2020-06, Vol.101 (12), p.1, Article 123510
Main Authors: Novikov, D. I., Pilipenko, S. V., De Petris, M., Luzzi, G., Mihalchenko, A. O.
Format: Article
Language:English
Subjects:
Big Bang theory
Contaminants
Cosmic microwave background
Dipoles
Distortion
Elastic scattering
Galactic clusters
Galaxies
Multipoles
Quadrupoles
Space missions
Spectra
Stokes parameters
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Summary:We consider the Stokes parameters' frequency spectral distortions arising due to Compton scattering of the anisotropic cosmic microwave background (CMB) radiation, the Sunyaev-Zel'dovich effect (SZ), towards clusters of galaxies. We single out a very special type of such distortions and find simple analytical formulas for them. We show that this kind of distortion has a very distinctive spectral shape and can be separated from other kinds of contaminants. We demonstrate that this effect gives us an opportunity for an independent estimation of the low-multipole angular CMB anisotropies, such as the dipole, the quadrupole, and the octupole. We also show that, using distorted signals from nearby and distant clusters, one can distinguish between the Sachs-Wolfe and the integrated Sachs-Wolfe effects. The detection of such distortions can be feasible with high-angular-resolution and high-sensitivity space missions, such as the upcoming Millimetron Space Observatory experiment.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.101.123510