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VLBI observations of Brightest Cluster Galaxies: are cooling and parsec scale morphology correlated?

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arxiv 0910.5104 v1 pith:KV6NRXR2 submitted 2009-10-27 astro-ph.CO

classification astro-ph.CO
keywords scaleclustersparseccoolcorebcgsclustergalaxies
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We present a statistical study on parsec scale properties of a sample of Brigthest Cluster Galaxies (BCGs) in Abell Clusters. These data show a possible difference between BCGs in cool core clusters (two-sided parsec scale jets) and in non cool core clusters (one-sided parsec scale jet). We suggest that the two-sided morphology in cool core clusters could be due to the presence of mildly relativistic jets slowed down already at mas scale as consequence of the jet interaction with a dense surrounding medium.

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