Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995mnras.277.1580e&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 277, Issue 4, pp. 1580-1586.
Astronomy and Astrophysics
Astronomy
19
Galaxies: Clusters: General, Radio Continuum: Galaxies, X-Rays: General
Scientific paper
From ROSAT imaging data we have detections and upper limits for a sample of 26 tailed radio sources in clusters of galaxies, taken mostly from the sample of O'Dea & Owen. 16 sources were detected, and all of these were unresolved in the ROSAT PSPC images. The sources bright enough to perform X-ray spectral analysis have power-law indices similar to BL Lacs and Seyfert galaxies. We find that there is a highly significant correlation between the core radio flux density and the X-ray flux, but only a weak correlation between the total radio flux density and the X-ray flux. The trend is similar to that found in earlier Einstein studies of 3C radio galaxies, and more recently with ROSAT. The result adds an additional constraint to models of the unification of BL Lac objects with FR I radio sources. Also, this result indicates that the observed enhanced X-ray emission near tailed sources is more likely to be a result of nuclear emission rather than substructure in the extended cluster gas.
Edge Alastair C.
Rottgering Huub
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