The physical properties and impact of AGN outflows from high to low redshift

Abstract

Feedback from active galactic nuclei (AGN) on their host galaxies, in the form of gas outflows capable of quenching star formation, is considered a major player in galaxy evolution. However, clear observational evidence of such major impact is still missing; uncertainties in measuring outflow properties might be partly responsible because of their critical role in comparisons with models and in constraining the impact of outflows on galaxies. Here we briefly review the challenges in measuring outflow physical properties and present an overview of outflow studies from high to low redshift. Finally, we present highlights from our MAGNUM survey of nearby AGN with VLT/MUSE, where the high intrinsic spatial resolution (down to $\sim$10 pc) allows us to accurately measure the physical and kinematic properties of ionised gas outflows.

arXiv comment8 pages, 2 figures, to be published in Proceeding IAU Symposium No. 359, 2020, "Galaxy evolution and feedback across different environments", Eds. T. Storchi-Bergmann, R. Overzier, W. Forman and R. Riffel

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