Diffuse Radio Sources in Groups and Poor Clusters

Details Diffuse Radio Sources in Groups and Poor Clusters Diffuse Radio Sources in Groups and Poor Clusters

2005-11-03

arxiv.org/abs/astro-ph/0511110v1

Astronomy and Astrophysics

Astrophysics

Conference proceedings, "Origins and Evolution of Cosmic Magnetism". 2 pages, 2 figures

Scientific paper

10.1002/asna.200610588

We have discovered new diffuse radio sources likely associated with groups of galaxies at low redshift (0.01-0.04) and without apparent AGN by using the WENSS and WISH catalogs to perform an unbiased survey. These sources resemble the radio halos, mini-halos, and 'relics' of rich clusters, which are thought to be powered by shocks and turbulence from infall into their deep potential wells. Our detection of similar sources within the shallow potential wells of groups of galaxies challenges this model. Their radio luminosities are approximately two orders of magnitude higher than expected from the extrapolation of the apparent rich cluster radio/X-ray luminosity relation. Even if these sources are misidentified distant clusters, they would lie above the apparent rich cluster radio/X-ray luminosity relation in the literature, suggesting that detections of radio halos and relics thus far may be more biased than previously thought.

Affiliated with

Also associated with

No associations

Rating

Diffuse Radio Sources in Groups and Poor Clusters does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Diffuse Radio Sources in Groups and Poor Clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diffuse Radio Sources in Groups and Poor Clusters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-482645