Babyk I. The distribution of visible and hidden masses in X-ray galaxy clusters at z < 1.4 obtained by the Chandra Space Observatory data

The thesis deals with the physical properties of X-clusters of galaxies in a wide redshift range. For this research we have selected the data of Chandra X-ray Space Observatory, namely, 128 clusters of galaxies from Abell, MACS, and RCS catalogs with spherically symmetrical shape. We have chosen clusters with X-ray flux values at the center not lower than 7.0 · 10^-12 erg s^-1 cm^-2, and with exposure time of observation not less than 5000 s, with proper morphology and a wide range of redshift z < 1.4. We used Xspec 12.6 to analyze the deprojected spectra. The spectral fitting was made using WABS*MEKAL model. We found the following physical characteristics as temperature, metalicity and luminosity, also we built the surface brightness profiles. In order to calculate the total mass profiles of galaxy clusters, the density profile of dark matter Navarro-Frenk-White and hydrostatic equilibrium of clusters were used. We got the mass of dark matter (~85%), intracluster gas (~12-14%), and stellar component (~1-3%). In addition, we found the fraction of stellar mass in total mass. For verification of measurements of total mass of galaxy clusters we made the comparison with results taken from another articles. We found that our results in a good agreement with previous work. For about 30 clusters the mass of each component was calculated firstly. We used all results for cosmological researches. We built the depending between the concentration parameter and total mass of cluster for all our sample and used few models to describe it. The correlation between the gas fraction and the inner slope indicates that the baryonic component affect the dark matter distribution in the central region of cluster, which is in agreement with some other results. In addition, we got relations between luminosity, temperature, and mass of intracluster gas at high redshifts.