The evolution of X-ray emitting gas in clusters of galaxies

Details The evolution of X-ray emitting gas in clusters of galaxies The evolution of X-ray emitting gas in clusters of galaxies

Mar 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.186..783f&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 186, Mar. 1979, p. 783-790. Research supported by the Radcliffe Trust.

Astronomy and Astrophysics

Astronomy

16

Galactic Clusters, Galactic Evolution, Gas Cooling, Interstellar Gas, X Ray Sources, Astronomical Models, Bremsstrahlung, Luminosity, Red Shift

Scientific paper

The bremsstrahlung cooling process in X-ray clusters is studied using a simple model. Only for a restricted range of initial conditions can the atmospheres in rich clusters of galaxies have undergone substantial cooling without leaving excessive present X-ray luminosities. From observational data it is found that it is unlikely that clusters can have gone through a high-temperature cooling phase since z = 3. It is concluded either that clusters of galaxies must have formed with little gas in their cores or that such gas was dispersed before cooling occurred.

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