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Paper detail

AGN feedback in galaxy groups: a joint GMRT/X-ray study

We present an ongoing study of 18 nearby galaxy groups, chosen for the availability of Chandra and/or XMM-Newton data and evidence for AGN/hot intragroup gas interaction. We have obtained 235 and 610 MHz observations at the GMRT for all the groups, and 327 and 150 MHz for a few. We discuss two interesting cases - NGC 5044 and AWM 4 - which exhibit different kinds of AGN/hot gas interaction. With the help of these examples we show how joining low-frequency radio data (to track the history of AGN outbursts through emission from aged electron populations) with X-ray data (to determine the state of hot gas, its disturbances, heating and cooling) can provide a unique insight into the nature of the feedback mechanism in galaxy groups.

preprint2009arXivOpen access
S. GiacintucciJ. M. VrtilekE. O'SullivanS. RaychaudhuryL. P. DavidT. VenturiR. AthreyaM. Gitti
astro-ph.CO
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S. GiacintucciJ. M. VrtilekE. O'SullivanS. RaychaudhuryL. P. DavidT. VenturiR. AthreyaM. Gitti

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