Bulletin of the Astronomical Society of India
Dharam V. Lal1*, M. Sun2, R. P. Kraft3 and M. J. Hardcastle4
1National Centre for Radio Astrophysics, Tata Institute of Fundamental Research,
Pune 411007, India
2Department of Physics, University of Alabama in Huntsville, Huntsville, AL 35899, USA
3Smithsonian Astrophysical Observatory, 60 Garden St., Cambridge, MA 02134, USA
4School of Physics, Astronomy and Mathematics, University of Hertfordshire
College Lane, Hatfield AL10 9AB, UK
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Outbursts of radio active galactic nuclei (AGN) have significant impact on structure formation and evolution. It has been suggested that a cool core is always required for strong radio AGN of bright cluster galaxy (BCG, Sun 2009). We have observed a complete sample of groups with strong central radio AGN using Chandra and Giant Metrewave Radio telescope (GMRT). From this study, we present first results for the BCG in the Abell 736 group using GMRT. We have discovered synchrotron radio “bubble” emission in which the ‘Z’-shaped radio galaxy resides.
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Keywords : clusters: individual (Abell 736) – galaxies: active – groups: radio