On the equilibrium distribution of gas in clusters of galaxies

Details On the equilibrium distribution of gas in clusters of galaxies On the equilibrium distribution of gas in clusters of galaxies

Feb 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apl....16..141l&link_type=abstract

Astrophysical Letters, vol. 16, no. 4, 1975, p. 141-144.

Astronomy and Astrophysics

Astrophysics

70

Density Distribution, Galactic Clusters, Gas Density, Intergalactic Media, X Ray Sources, Hydrostatics, Mass Distribution, Spatial Distribution

Scientific paper

The hydrostatic-equilibrium solution for a polytropic gas in a cluster of galaxies has been calculated. The gas has a wider distribution than the galaxies. If the central gas density is 0.0008 particles/cu cm for gamma = 5/3 or 0.002 per cu cm for gamma = 1.35, the total X-ray emission from a model Coma cluster is equal to the observed emission. The spatial extent and spectrum for the source are also well-represented by the model if gamma = 1.35.

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