Investigation of Properties of the Intercluster Medium Rich Clusters of Galaxies

TL;DR

This study statistically analyzes 213 rich galaxy clusters, confirming known correlations and discovering a new anti-correlation between optical and X-ray luminosities, indicating significant mass variation in intracluster gas.

Contribution

It presents new evidence of an anti-correlation between optical and X-ray luminosities in galaxy clusters, revealing variations in intracluster gas mass.

Findings

Confirmed correlation between X-ray luminosity and temperature.

Confirmed correlation between X-ray luminosity and galaxy velocity dispersion.

Discovered anti-correlation between optical H-alpha and X-ray luminosities.

Abstract

The statistical analysis of properties of 213 rich clusters of galaxies is performed. The existence of correlations between the X-ray luminosity and the temperature of the intracluster medium and between the X-ray luminosity and the velocity dispersion of the galaxies is confirmed. New anti-correlation between optical luminosities L_Halpha and x-ray luminosities L_x of intracluster gas in clusters is discovered: log(L_Halpha/L_Sun)=a-b(log(L_x/L_Sun)). The existence of sequences in the log(L_Halpha/L_Sun)-log(L_x/L_Sun) plane testifies to that the masses of the intracluster gas in different clusters can differ significantly.