University of Hertfordshire

From the same journal

By the same authors

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

Research output: Contribution to journalArticlepeer-review

Documents

  • 1809.01700v1

    Accepted author manuscript, 488 KB, PDF document

  • R. A. Cheale
  • J. E. Geach
  • A. C. Edge
  • Y. C. Perrott
  • T. Cantwell
View graph of relations
Original languageEnglish
Pages (from-to)L54–L58
Number of pages5
JournalMonthly Notices of the Royal Astronomical Society: Letters
Volume481
Issue1
Early online date31 Aug 2018
DOIs
Publication statusPublished - 21 Nov 2018

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.

Notes

5 pages, 3 figures Cheale, R. A., Geach, J. E., Edge, A. C., Perrott, Y. C., & 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. DOI: 10.1093/mnrasl/sly161 This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society: Letters. © 2018 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

ID: 15602373