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        The nature of the variable millimetre-selected AGN in the Brightest Cluster Galaxy of Abell 851

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        1809.01700v1.pdf (PDF, 488Kb)
        Author
        Cheale, R. A.
        Geach, J. E.
        Edge, A. C.
        Perrott, Y. C.
        Cantwell, T.
        Attention
        2299/20771
        Abstract
        We present the detection of a bright 3mm continuum source in the brightest cluster galaxy (BCG) in Abell 0851 (z = 0.411) with the NOrthern Extended Millimeter Array (NOEMA). When this detection is compared to other multifrequency observations across 21cm-100μm, including new Arcminute Microkelvin Imager 15 GHz observations, we find evidence for a relatively flat, variable core source associated with the BCG. The radio power and amplitude of variability observed in this galaxy is consistent with the cores in lower redshift BCGs in X-ray-selected clusters, and the flat mm-cm spectrum is suggestive of the BCG being a low-luminosity active galactic nucleus archetype. The discovery of this system could provide a basis for a long-term study of the role of low-luminosity radio mode 'regulatory' feedback in massive clusters.
        Publication date
        2018-11-21
        Published in
        Monthly Notices of the Royal Astronomical Society: Letters
        Published version
        https://doi.org/10.1093/mnrasl/sly161
        Other links
        http://hdl.handle.net/2299/20771
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