A comprehensive study of the radio properties of brightest cluster galaxies

• DOI: 10.1093/mnras/stv1517
• Publication Date: 2016-08-04T19:13:55Z
• Authors: M. T. Hogan; A. C. Edge; J. Hlavacek-Larrondo; K. J. B. Grainge; S. L. Hamer; E. K. Mahony; H. R. Russell; A. C. Fabian; B. R. McNamara; R. J. Wilman
• Keywords: ROSAT; Jansky; Cooling flow

We examine the radio properties of brightest cluster galaxies (BCGs) in a large sample X-ray selected galaxy clusters comprising Brightest Cluster Sample (BCS), extended BCS and ROSAT-ESO Flux Limited catalogues. have multifrequency observations BCG using variety data from Australia Telescope Compact Array, Jansky Very Large Array Long Baseline telescopes. The spectral energy distributions these objects are decomposed into component attributed to on-going accretion by active galactic nuclei (AGN) that we refer as 'the core', more diffuse, ageing 'non-core'. These BCGs matched previous studies determine whether they exhibit emission lines (principally Hα), indicative presence strong cooling core. consider how vary with environmental factors. Line emitting shown generally host powerful sources, exhibiting strong, distinguishable core about 60 per cent cases. This strongly correlates BCG's [O iii] 5007 Å line emission. For clusters, cavity power both emission, suggestive steady fuelling AGN over bubble-rise time-scales clusters.