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- W2083256402 abstract "The selection criteria adopted for the Einstein Observatory Medium Sensitivity survey are delineated and the results of an analysis of the source-count relation for extragalactic X ray sources is presented. Only IPC fields at least 20 deg outside of the galactic plane, and then only those images in the center of the fields, were included. A total of 345 objects were sighted in the 0.3-3.5 keV energy interval, and 77 percent were concluded to be extragalactic. Most were associated with active galactic nuclei (AGN), including Seyfert galaxies and quasars, and galactic clusters. A slope of about 1.7 was calculated for the power law of the energy spectra of AGNs and close to 1.0 for clusters." @default.
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- W2083256402 date "1984-01-01" @default.
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- W2083256402 title "The Euclidean slope of the X-ray source counts: A “cosmic conspiracy”" @default.
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- W2083256402 doi "https://doi.org/10.1016/0273-1177(84)90086-3" @default.
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