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First Measurement of a Rapid Increase in the AGN Fraction in High-Redshift Clusters of Galaxies
ASTROPHYSICAL JOURNAL, no. 1 (2007): L9-L12
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We present the first measurement of the AGN fraction in high-redshift clusters of galaxies (z similar to 0.6) with spectroscopy of one cluster and archival data for three additional clusters. We identify eight active galactic nuclei (AGNs) in these clusters from Chandra data that are sensitive to AGNs with hard X- ray (2 - 10 keV) luminos...更多
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