What bends the lobes of WAT radio sources in isolated environments -- are they in fossil groups?

Details What bends the lobes of WAT radio sources in isolated environments -- are they in fossil groups? What bends the lobes of WAT radio sources in isolated environments -- are they in fossil groups?

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003cxo..prop.1570b&link_type=abstract

Chandra Proposal ID #05800812

Physics

Chandra Proposal Id #05800812

Scientific paper

Optical observations of WAT radio sources reveal several that appear to be associated with "fossil groups" -- isolated E galaxies with cD-like luminosities which have "cannibalized" nearby galaxies leaving behind extended, dense IGM. A few fossil groups have been discovered, all in X-ray surveys, and appear to be old (relaxed) systems. However, to bend the lobes in WATs, relative motion between the host galaxy and gas is needed to provide ram pressure. This can be achieved if there has been a recent group-group merger, or infalling gas. We will map out the distribution of the X-ray gas associated with the fossil groups to test this scenario, which is in contrast to the picture of fossil groups as old systems. We will measure the group masses and their locations on the L-T plane.

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