The effect of cluster magnetic field on the Sunyaev Zeldovich power spectrum

Abstract

Precision measurements of the Sunyaev Zeldovich (SZ) effect in upcoming blank sky surveys require theoretical understanding of all physical processes with $\ga 10%$ effects on the SZ power spectrum. We show that, observed cluster magnetic field could reduce the SZ power spectrum by $\sim 20$ at $l\sim 4000$, where the SZ power spectrum will be precisely measured by the Sunyaev Zeldovich array (SZA) and the Atacama cosmology telescope (ACT). At smaller scale, this effect is larger and could reach a factor of several. Such effect must be considered for an unbiased interpretation of the SZ data. Though the magnetic effect on the SZ power spectrum is very similar to that of radiative cooling, it is measurable by multi-band CMB polarization measurement.

8 pages, 7 figures. Revised version accepted by MNRAS

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Cited by in corpus (10)

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• The probability distribution function of the SZ power spectrum: an analytical approach
• S-Z power spectrum produced by primordial magnetic fields
• Primordial magnetic fields with X-ray and S-Z cluster survey
• Magnetic Sunyaev-Zel'dovich effect in galaxy clusters
• Structure and evolution of magnetized clusters: entropy profiles, S-T and L_X-T relations
• Sunyaev-Zel'dovich power spectrum with decaying cold dark matter
• Magnetic fields and Sunyaev-Zel'dovich effect in galaxy clusters