Theoretical models of X-ray emission from rich clusters of galaxies

Details Theoretical models of X-ray emission from rich clusters of galaxies Theoretical models of X-ray emission from rich clusters of galaxies

Nov 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981assl...87..227c&link_type=abstract

In: X-ray astronomy with the Einstein satellite; Proceedings of the Meeting, Cambridge, MA, January 28-30, 1980. (A82-33476 16-9

Astronomy and Astrophysics

Astronomy

14

Astronomical Models, Galactic Clusters, Luminosity, Mass Flow, Polytropic Processes, X Ray Sources, Cosmology, Equations Of State, Gas Density, Gas Temperature, Gravitational Fields

Scientific paper

After assessing the theory of cluster gas with polytropic equations of state, and discussing the prediction of local polytropic indices in the gas distribution, attention is given to the consequences of modifying the equation of state by thermal cooling in the central regions of the cluster. It is suggested that, if the equation of state can be understood locally, an attempt may be made at (1) predicting the X-ray luminosities of the clusters at distant cosmological epochs and (2) measuring the evolution of the cluster's potential, through observation of the evolution of X-ray luminosity and surface brightness.

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