Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1248..281g&link_type=abstract
X-RAY ASTRONOMY 2009; PRESENT STATUS, MULTI-WAVELENGTH APPROACH AND FUTURE PERSPECTIVES: Proceedings of the International Confer
Astronomy and Astrophysics
Astronomy
Clusters Of Galaxies, Intergalactic Matter, Brightness, Astrophysical Jets, Galactic Centre, Galaxy Clusters, Intergalactic Matter, Quasar Absorption And Emission-Line Systems, Lyman Forest, Luminosity And Mass Functions, Jets, Outflows, And Bipolar Flows, Galactic Center, Bar, Circumnuclear Matter, And Bulge
Scientific paper
As a part of an ongoing study of a sample of galaxy groups showing evidence for AGN/hot gas interaction, we report on the preliminary results of an analysis of Chandra, XMM-Newton and new GMRT data of the X-ray bright compact group HCG 62. This is one of the few groups known to possess very clear, small X-ray cavities in the inner region as shown by the existing Chandra image. At higher frequency (1.4 GHz) the cavities show minimal if any radio emission, but the radio appears clearly at lower frequencies (<=610 MHz). We find that the radio source is radiatively inefficient, with a ratio of mechanical cavity power to radio luminosity of ~104, and that the jets have hadronic content. We also identify a shock front located around 35 kpc to the south-west of the group center. Such a shock may have significantly heated the gas close to the southern cavity, as indicated by the temperature map.
David Liana
Giacintucci Simona
Gitti Myriam
Nulsen Paul
O'Sullivan Ewan
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