X-ray line emission for clusters of galaxies. II - Numerical models

Abstract

The predicted X-ray spectra of clusters of galaxies have been calculated assuming that the X-ray emission arises from hot intracluster gas in collisional ionization equilibrium. An extensive grid of models is presented for isothermal models, polytropic hydrostatic models, and wind models. The integrated X-ray spectrum is given for each model, including line and recombination radiation. The intensities of satellite lines due to dielectronic recombination and inner-shell excitation are also presented; these satellites can be used to derive the temperature and ionization state of the gas. The projected distributions on the sky of continuum X-ray intensity, line strengths and line widths, and the satellite intensities are given as a function of projected radius from the cluster center. The predicted microwave diminution has been calculated as a function of cluster position. The observable X-ray emission properties scale simply with cluster parameters; relations are given for deriving the predicted X-ray properties from other observations.