The radio luminosity function of radio galaxies in distant clusters

Details The radio luminosity function of radio galaxies in distant clusters The radio luminosity function of radio galaxies in distant clusters

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006an....327..571b&link_type=abstract

Astronomische Nachrichten, Vol.327, Issue 5/6, p.571

Mathematics

Logic

1

Galaxies: Clusters, Galaxies: High-Redshift, Radio Continuum: Galaxies

Scientific paper

A complete sample of 18 X-ray selected clusters of galaxies belonging to the ROSAT North Ecliptic Pole (NEP) survey has been observed with the Very Large Array at 1.4 GHz. These are the most distant clusters in the X-ray survey with redshift in the range 0.3 < z < 0.8. 79 radio sources are detected within half an Abell radius with an observed peak brightness ≥0.17 mJy beam-1. 32 out of the 79 sources are within 0.2 Abell radius, 22 of them are considered cluster members based on spectroscopic redshifts or their optical magnitude and morphological classification. The cluster radio galaxies are used to construct the radio luminosity function (RLF) of distant X-ray selected clusters. A comparison with two nearby cluster RLFs shows that the NEP RLF lies above the local ones, has a steeper slope at low radio powers (≤1024 W Hz-1) and shows no evidence for a break at ≈ 6 × 1024 W Hz-1 which is observed in the nearby cluster RLFs.

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