paper

Feedback from low-to-moderate luminosity radio-AGN with MaNGA

arXiv:2503.20889 · doi:10.1051/0004-6361/202453307

Abstract

Spatially resolved spectral studies of radio-AGN host galaxies have shown that these systems can impact the ionised gas on galactic scales. However, whether jet and radiation-driven feedback occurs simultaneously is still unclear. We select a large and representative sample of 806 radio-AGN from the MaNGA survey, from W/Hz, and trace the warm ionised gas kinematics using the [OIII] emission line from the IFU spectra. We measure the [OIII] line width and compare it to the stellar velocity dispersion to determine the presence and location of the disturbed gas. We find most disturbed [OIII] kinematics and proportion of disturbed sources up to a radial distance of 0.25, when both radio and optical AGN are present in a source, and the radio luminosity is larger than W/Hz. When either radio or optical-AGN are present, the impact on [OIII] is milder. Irrespective of the presence of an optical-AGN, we find significant differences in the feedback from high and low luminosity radio-AGN only up to a radial distance of 0.25. The presence of more kinematically disturbed warm ionised gas in the central region of radio-AGN host galaxies is related to both jets and radiation in these sources. We propose that in moderate radio luminosity AGN (W/Hz) gas clouds pushed to high velocities by the jets (radiation) are driven to even higher velocities by the impact of radiation (jets) when both radio and optical-AGN are present. At lower luminosities (W/Hz), the correlation between the disturbed ionised gas and enhanced radio emission could either be due to wind-driven shocks powering the radio emission, or low-power jets disturbing the gas.

arXiv commentAccepted for publication in Astronomy and Astrophysics

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