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A multiwavelength view of cooling versus AGN heating in the X-ray luminous cool-core of Abell 3581.

Canning, R.E.A. and Sun, M. and Sanders, J.S. and Clarke, T.E. and Fabian, A.C. and Giacintucci, S. and Lal, D.V. and Werner, N. and Allen, S.W. and Donahue, M. and Edge, A.C. and Johnstone, R.M. and Nulsen, P.E.J. and Salomé, P. and Sarazin, C.L. (2013) 'A multiwavelength view of cooling versus AGN heating in the X-ray luminous cool-core of Abell 3581.', Monthly notices of the Royal Astronomical Society., 435 (2). pp. 1108-1125.


We report the results of a multiwavelength study of the nearby galaxy group, Abell 3581 (z = 0.0218). This system hosts the most luminous cool core of any nearby group and exhibits active radio mode feedback from the supermassive black hole in its brightest group galaxy, IC 4374. The brightest galaxy has suffered multiple active galactic nucleus outbursts, blowing bubbles into the surrounding hot gas, which have resulted in the uplift of cool ionized gas into the surrounding hot intragroup medium. High velocities, indicative of an outflow, are observed close to the nucleus and coincident with the radio jet. Thin dusty filaments accompany the uplifted, ionized gas. No extended star formation is observed; however, a young cluster is detected just north of the nucleus. The direction of rise of the bubbles has changed between outbursts. This directional change is likely due to sloshing motions of the intragroup medium. These sloshing motions also appear to be actively stripping the X-ray cool core, as indicated by a spiralling cold front of high-metallicity, low-temperature, low entropy gas.

Item Type:Article
Keywords:Galaxies: active, Galaxies: clusters: intracluster medium, Galaxies: groups: individual: Abell 3581, Galaxies: ISM
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Publisher statement:This article has been accepted for publication in Monthly notices of the Royal Astronomical Society © 2013 The Authors Published by Oxford University Press on behalf of Royal Astronomical Society. All rights reserved.
Date accepted:No date available
Date deposited:19 June 2014
Date of first online publication:October 2013
Date first made open access:No date available

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