| Type |
Conference Paper |
| Names |
Victoria Hartwick, E. Wilcots, K. M. Hess |
| Proceedings Title |
Bulletin of the American Astronomical Society |
| Conference Name |
American Astronomical Society, AAS Meeting #215, #436.24 |
| Volume |
42 |
| Pages |
388 |
| Date |
January 1, 2010 |
| URL |
http://adsabs.harvard.edu/abs/2010AAS...21543624H |
| Library Catalog |
NASA ADS |
| Abstract |
Fossil groups, luminous, isolated elliptical galaxies with extended
x-ray halos, represent the remnants of galactic cannibalism within
galaxy groups. Current research has concentrated primarily on visible
and x-ray observations. Here, we report the results of a preliminary
survey of 34 fossil groups observed at 1.4Ghz using the VLA. We detect
radio sources in many of the groups. Using radio emission as a tracer
for nuclear activity, we estimate the frequency of past and current AGN
activity in fossil groups and extract information about the age and
evolutionary history of the fossil groups. Further observations at
multiple radio frequencies may then provide information about the role
of minor mergers and AGN as sources of heat in the IGM and as remedies
to the cooling flow problem. |