The evolution of cluster X-ray sources

Details The evolution of cluster X-ray sources The evolution of cluster X-ray sources

Dec 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...226..566p&link_type=abstract

Astrophysical Journal, Part 1, vol. 226, Dec. 1, 1978, p. 566-585. Research supported by the Smithsonian Research Foundation

Mathematics

Logic

57

Cosmology, Extragalactic Radio Sources, Galactic Clusters, Galactic Evolution, Intergalactic Media, X Ray Sources, Abundance, Density Distribution, Hydrodynamics, Red Shift, Stellar Mass Ejection, Temperature Profiles, Time Dependence, Velocity Distribution

Scientific paper

The evolutionary behavior over cosmological time scales of hot intracluster gas in rich clusters of galaxies is examined with a spherically symmetric hydrodynamical code, for the important case of a time-dependent cluster gravitational potential. Both infall of primordial matter and ejection of metal-enriched galactic material are considered. Cluster X-ray properties as a function of redshift are predicted, and the results are compared to observations of low-redshift clusters. The effects of evolution are strong; for example, cluster X-ray luminosities increase by about a factor of 10 from the epoch with redshift z = 1 until the present. It is shown that the effects of evolution dominate in any cosmological test with X-ray clusters.

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