Probing the Evolution of Gas Mass Fraction with Sunyaev-Zel'dovich Effect

Abstract

Study of the primary anisotropies of the Cosmic Microwave Background (CMB) can be used to determine the cosmological parameters to a very high precision. The power spectrum of the secondary CMB anisotropies due to the thermal Sunyaev-Zel'dovich Effect (SZE) by clusters of galaxies, can then be studied, to constrain more cluster specific properties (like gas mass). We show the SZE power spectrum from clusters to be a sensitive probe of any possible evolution (or constancy) of the gas mass fraction. The position of the peak of the SZE power spectrum is a strong discriminatory signature of different gas mass fraction evolution models. For example, for a flat universe, there can be a difference in the $l$ values (of the peak) of {\it as much as 3000} between a constant gas mass fraction model and an evolutionary one. Moreover, observational determination of power spectrum, from blank sky surveys, is devoid of any selection effects that can possibly affect targeted X-ray or radio studies of gas mass fractions in galaxy clusters.

4 pages plus 2 figures, uses emulateapj

References in corpus (2)

• Galaxy Cluster Gas Mass Fractions from Sunyaev-Zel'dovich Effect Measurements: Constraints on Omega_M
• New Light on the Baryon Fraction in Galaxy Clusters

Cited by in corpus (14)

• Secondary anisotropies of the CMB
• The case for non-gaussianity on cluster scales
• Point sources in the context of future SZ surveys
• Cluster abundances and S-Z power spectra: effects of non-Gaussianity and early dark energy
• The intergalactic medium temperature and Compton y parameter
• The probability distribution function of the SZ power spectrum: an analytical approach
• The hybrid SZ power spectrum: Combining cluster counts and SZ fluctuations to probe gas physics
• CMB distortion from circumgalactic gas
• Simultaneous determination of ${\Omega }_{M0}$ and $H_0$ from joint Sunyaev-Zeldovich effect and X-ray observations with median statistics
• On the Detectability of the SZ Effect of Massive Young Galaxies
• The effect of cluster magnetic field on the Sunyaev Zeldovich power spectrum
• CMB Comptonization in Clusters: Spectral and Angular Power from Evolving Polytropic Gas
• AGN feedback with the Square Kilometer Array (SKA) and implications for cluster physics and cosmology
• The non-thermal secondary CMB anisotropies from a cosmic distribution of radio galaxy lobes