Relativistic Corrections to the Thermal Sunyaev-Zel'dovich Power Spectrum

Details Relativistic Corrections to the Thermal Sunyaev-Zel'dovich Power Spectrum Relativistic Corrections to the Thermal Sunyaev-Zel'dovich Power Spectrum

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003chjaa...3..410l&link_type=abstract

Chinese Journal of Astronomy & Astrophysics, Vol. 3, No. 5, p. 410-414

Astronomy and Astrophysics

Astrophysics

Cosmic Microwave Background, Cosmology: Theory, Galaxies: Clusters: General

Scientific paper

We present a quantitative estimate of the relativistic corrections to the thermal SZ power spectrum produced by the energetic electrons in massive clusters. The corrections are well within 10% for current experiments with working frequencies below ν<100 GHz, but become non-negligible at high frequencies ν>350 GHz. Moreover, the corrections appear to be slightly smaller at higher ℓ or smaller angular scales. We conclude that there is no need to include the relativistic corrections in the theoretical study of the SZ power spectrum especially at low frequencies unless the SZ power spectrum is used for precision cosmology.

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