Radio Halos in Clusters of Galaxies from the WENSS Survey

Details Radio Halos in Clusters of Galaxies from the WENSS Survey Radio Halos in Clusters of Galaxies from the WENSS Survey

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...195.1014k&link_type=abstract

American Astronomical Society, 195th AAS Meeting, #10.14; Bulletin of the American Astronomical Society, Vol. 31, p.1390

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We have used the Westerbork Northern Sky Survey (WENSS) at 327 MHz to search for diffuse radio sources associated with clusters of galaxies in the Abell catalog. The WENSS source catalog was used in combination with the survey images to search for diffuse radio halos and relics as well as for narrow angle tail radio galaxies in Abell clusters. Halos and relics may be produced by electrons accelerated in cluster merger shocks and provide evidence of the recent formation history of the cluster. The survey provides data on structures ranging from about 30'' to 1o down to a limiting flux density of 18 mJy. This allows us to look at large, faint, diffuse objects on the scale of cluster-wide halos in all but the nearest clusters. The low observing frequency of the survey combines with the characteristically steep spectra of these sources to make the WENSS especially good for studying cluster halos and relics. This work was supported by NASA ADP grant NAG5-8390.

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