Power spectrum of the Sunyaev-Zel’dovich effect

The Sunyaev - Zeldovich Effect

During passage through a cluster of galaxies some of the photons of the cosmic microwave background (CMB) radiation are scattered by electrons in the hot intracluster (IC) gas. The scattering slightly modifies the incident Planck spectrum, imprinting on it a unique spectral signature that was first described by Sunyaev & Zeldovich (1972). [The impact of hypothetical hot intergalactic gas on the...

Sunyaev–Zeldovich Effect

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

Precision measurements of the Sunyaev Zeldovich (SZ) effect in upcoming blank sky surveys require theoretical understanding of all physical processes with & 10% effects on the SZ power spectrum. We show that, observed cluster magnetic field could reduce the SZ power spectrum by ∼ 20% at l ∼ 4000, where the SZ power spectrum will be precisely measured by the Sunyaev Zeldovich array (SZA) and the...

Estimating Power Spectrum of Sunyaev-Zeldovich Effect from the Cross-Correlation between WMAP and 2MASS

We estimate the power spectrum of SZ(Sunyaev-Zel’dovich)-effect-induced temperature fluctuations on sub-degree scales by using the cross correlation between the three-year WMAP maps and 2MASS galaxy distribution. We produced the SZ effect maps by hydrodynamic simulation samples of the ΛCDM model, and show that the SZ effect temperature fluctuations are highly non-Gaussian. The PDF of the temper...

Triple Experiment Spectrum of the Sunyaev - Zeldovich Effect in the Coma Cluster : H 0

The Sunyaev-Zeldovich (SZ) effect was previously measured in the Coma cluster by the OVRO and MITO experiments, and recently also with the WMAP satellite. We assess the consistency of these results and their implications on the feasibility of high frequency SZ work with ground-based telescopes. The unique dataset from the combined measurements at six frequency bands is jointly analyzed to deter...