The nature of the variable millimetre–selected AGN in the brightest cluster galaxy of Abell 851

Cheale, RA; Geach, JE; Edge, AC; Perrott, YC; Cantwell, T

doi:10.1093/mnrasl/sly161

The nature of the variable millimetre–selected AGN in the brightest cluster galaxy of Abell 851

Cheale, RA; Geach, JE; Edge, AC; Perrott, YC; Cantwell, T

Authors

RA Cheale

JE Geach

Professor Alastair Edge alastair.edge@durham.ac.uk
Professor

YC Perrott

T Cantwell

Abstract

We present the detection of a bright 3 mm 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.

Citation

Cheale, R., Geach, J., Edge, A., Perrott, Y., & Cantwell, T. (2018). The nature of the variable millimetre–selected AGN in the brightest cluster galaxy of Abell 851. Monthly Notices of the Royal Astronomical Society: Letters, 481(1), L54-L58. https://doi.org/10.1093/mnrasl/sly161

Journal Article Type	Article
Acceptance Date	Aug 25, 2018
Online Publication Date	Aug 31, 2018
Publication Date	Aug 31, 2018
Deposit Date	Sep 24, 2018
Publicly Available Date	Oct 10, 2018
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Electronic ISSN	1745-3933
Publisher	Oxford University Press
Peer Reviewed	Peer Reviewed
Volume	481
Issue	1
Pages	L54-L58
DOI	https://doi.org/10.1093/mnrasl/sly161
Related Public URLs	https://arxiv.org/pdf/1809.01700.pdf

Files

Published Journal Article (495 Kb)
PDF

Copyright Statement
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © 2018 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.