Work

Radio Halo and Relic Candidates from the Westerbork Northern Sky Survey

Year: 2001

Type: article

Abstract: We have undertaken a systematic search for diffuse radio halos and relics in all of the Abell clusters that are visible in the Westerbork Northern Sky Survey. In this survey we found 18 candidates, 11 of which are already known from the literature and seven for which we provide the first evidence of diffuse radio emission. All the clusters in this sample show other evidence for a recent or ongoing merger. We also investigate the correlation between cluster X-ray luminosity and radio power of halos. We develop a very simple model for merger shocks that reproduce the sense of this correlation, although it is probably not as steep as the correlation in the data. We discuss the implications of X-ray-radio correlations for future detections of radio halos.

Source: The Astrophysical Journal

DOI: 10.1086/319024

Authors: Joshua C. Kempner, Craig L. Sarazin

Institution: University of Virginia

Language: English

Topic: Galaxies: Formation, Evolution, Phenomena

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: Smithsonian Institution, National Aeronautics and Space Administration, Smithsonian Astrophysical Observatory

Award: G8945776167