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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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academic.microsoft.com arxiv.org

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galaxies : activegalaxies : clusters : individual (Cl 0016+1609 Cl 0542-4100 Cl 0848.6+4453 MS 2053-04)更多(1+)

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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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