Chandra observations of clusters of galaxies containing fossil radio sources

Details Chandra observations of clusters of galaxies containing fossil radio sources Chandra observations of clusters of galaxies containing fossil radio sources

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004cxo..prop.1766m&link_type=abstract

Chandra Proposal ID #06800209

Computer Science

Chandra Proposal Id #06800209

Scientific paper

We propose Chandra observations of three galaxy clusters which harbor fossil radio galaxies recently discovered by us in the radio. Fossil radio sources are very rare objects. We argue that their intriguing association with clusters implies that the pressure of the dense intracluster medium (perhaps a cooling flow) prevents quick liquidation of a fossil radio lobe through adiabatic expansion. We will use the proposed observations to test this hypothesis and to compare the actual fading radio structures with the X-ray image, expecting to find cavities in the intracluster gas. We intend to establish an interaction history sequence in which our fossil sources are the progenitors of `ghost' bubbles, i.e. X-rays cavities that are not associated with the central radio source.

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