The accuracy of X-ray masses of galaxy clusters.

Details The accuracy of X-ray masses of galaxy clusters. The accuracy of X-ray masses of galaxy clusters.

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apl%26c..36..173s&link_type=abstract

Astrophysical Letters and Communications, Vol. 36, Nos. 1 - 6, p. 173 - 179

Astronomy and Astrophysics

Astrophysics

Clusters Of Galaxies: Masses, Clusters Of Galaxies: X Rays, Clusters Of Galaxies: Intergalactic Gas, Intracluster Gas: X Rays

Scientific paper

The author tests the reliability of mass determination in clusters of galaxies by X-ray observations. The true mass in cluster models is compared to the mass derived by the X-ray emission and X-ray temperature of a model assuming hydrostatic equilibrium and spherical symmetry for the intracluster gas. In general, the author finds good agreement between the X-ray mass and the true mass without any systematic over- or underestimation. The average deviation within the central 2 Mpc has an r.m.s. value of 15%.

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