Constraints on the mass fluctuation spectrum from X ray observations of clusters of galaxies

Details Constraints on the mass fluctuation spectrum from X ray observations of clusters of galaxies Constraints on the mass fluctuation spectrum from X ray observations of clusters of galaxies

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991tpsu.rept..119h&link_type=abstract

In its Traces of the Primordial Structure in the Universe p 119 (SEE N92-29833 20-90)

Computer Science

1

Galactic Clusters, Galactic Mass, Mass Distribution, Mass Spectra, Stellar Luminosity, X Ray Analysis, Galactic Evolution, Red Shift, Temperature Measurement, Universe

Scientific paper

Two independent constraints on the mass fluctuation spectrum of the Universe are reported. Both constraints use x-ray measurements of clusters of galaxies. A statistically complete sample of galaxy clusters which also have complete x-ray temperature information is presented. Using this sample the cluster temperature function was derived. A sample of clusters was extracted from the Einstein Medium sensitivity survey whose flow was limited and 98.4 percent identified. It contained 93 x-ray selected clusters out to a redshift of z = 0.58. Using this sample the x-ray luminosity function was obtained at three cosmic epochs.

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