Evidence of gas heating by the central AGN in MKW 3s

Details Evidence of gas heating by the central AGN in MKW 3s Evidence of gas heating by the central AGN in MKW 3s

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006an....327..573g&link_type=abstract

Astronomische Nachrichten, Vol.327, Issue 5/6, p.573

Astronomy and Astrophysics

Astronomy

2

Galaxies: Clusters: Individual (Mkw 3S), Cooling Flows, Radio Continuum: Galaxies, X-Rays: Galaxies: Clusters

Scientific paper

We present the results of radio observations of the galaxy cluster MKW 3s carried out at 1.28 GHz and 610 MHz with the Giant Metrewave Radio Telescope (GMRT). The Chandra observations of MKW 3s revealed that this cluster is characterized by a complex X-ray structure hosting both a X-ray filament and a X-ray cavity. The temperature structure of the cluster core is even more complex, with the presence of extended regions of gas heated above the radially averaged gas temperature at any radius. The magnetic field derived from the radio observations is ˜ 2 μG and provides radiative ages of the order of ˜ 2 × 108 yrs. Thanks to this estimate of the magnetic field strength and the comparison between the radio structure and the Chandra data, we found clear evidence for a close connection between the radio activity of the central AGN and the heated gas regions in this cluster.

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