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Feedback and ionized gas outflows in four low-radio power AGN at z ∼ 0.15

Lookup NU author(s): Aishwarya Girdhar, Dr Christopher HarrisonORCiD

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


Abstract

© 2024 EDP Sciences. All rights reserved. An increasing number of observations and simulations suggests that low-power (< 1044 erg s1) jets may be a significant channel of feedback produced by active galactic nuclei (AGN), but little is known about their actual effect on their host galaxies from the observational point of view. We targeted four luminous type 2 AGN hosting moderately powerful radio emission (∼1044 erg s1), two of which and possibly a third are associated with jets, with optical integral field spectroscopy observations from the Multi Unit Spectroscopic Explorer (MUSE) at the Very Large Telescope (VLT) to analyze the properties of their ionized gas as well as the properties and effects of ionized outflows. We combined these observations with Very Large Array (VLA) and e-MERLIN data to investigate the relations and interactions between the radio jets and host galaxies. We detected ionized outflows as traced by the fast bulk motion of the gas. The outflows extended over kiloparsec scales in the direction of the jet, when present. In the two sources with resolved radio jets, we detected a strong enhancement in the emission-line velocity dispersion (up to 1000 km s1) perpendicular to the direction of the radio jets. We also found a correlation between the mass and the energetics of this high-velocity dispersion gas and the radio power, which supports the idea that the radio emission may cause the enhanced turbulence. This phenomenon, which is now being observed in an increasing number of objects, might represent an important channel for AGN feedback on galaxies


Publication metadata

Author(s): Ulivi L, Venturi G, Cresci G, Marconi A, Marconcini C, Amiri A, Belfiore F, Bertola E, Carniani S, D' Amato Q, Di Teodoro E, Ginolfi M, Girdhar A, Harrison C, Maiolino R, Mannucci F, Mingozzi M, Perna M, Scialpi M, Tomicic N, Tozzi G, Treister E

Publication type: Article

Publication status: Published

Journal: Astronomy and Astrophysics

Year: 2024

Volume: 685

Online publication date: 16/05/2024

Acceptance date: 18/01/2024

Date deposited: 14/08/2024

ISSN (print): 0004-6361

ISSN (electronic): 1432-0746

Publisher: EDP Sciences

URL: https://doi.org/10.1051/0004-6361/202347436

DOI: 10.1051/0004-6361/202347436


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Funding

Funder referenceFunder name
UKRI - MR/V022830/1

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