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Constraining the driving mechanism of galaxy-scale winds with emission line spectra

Published online by Cambridge University Press:  28 October 2024

Jonathan Stern Open the ORCID record for Jonathan Stern [Opens in a new window] ,
Jose Oñorbe ,
Alexander J. Richings ,
Sean D. Johnson  and
Claude-André Faucher-Giguère
Jonathan Stern*
Affiliation:
School of Physics & Astronomy, Tel Aviv University, Tel Aviv 69978, Israel
Jose Oñorbe
Affiliation:
Facultad de Físicas, Universidad de Sevilla, E-41012 Seville, Spain
Alexander J. Richings
Affiliation:
Data Science AI and Modelling Centre, University of Hull, Hull HU6 7RX, UK
Sean D. Johnson
Affiliation:
Department of Astronomy, University of Michigan, Ann Arbor, MI 48109, USA
Claude-André Faucher-Giguère
Affiliation:
Department of Physics and Astronomy and CIERA, Northwestern University, Evanston, IL 60208, USA
*
email: sternjon@tauex.tau.ac.il
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Abstract

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Using hydrodynamic simulations and photoionization calculations, we demonstrate that quasar emission line spectra contain information on the driving mechanism of galaxy-scale outflows. Outflows driven by a hot shocked bubble are expected to exhibit LINER-like optical line ratios, while outflows driven by radiation pressure are expected to exhibit Seyfert-like line ratios. Driving by radiation pressure also has a distinct signature in the narrow UV lines, which is detected in an HST-COS spectrum of a nearby quasar hosting a large-scale wind.

Keywords

AGNoutflowsISM: jets and outflowsMagneto-hydrdynamical simulations
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 19 , Symposium S378: Black Hole Winds at All Scales , December 2023 , pp. 45 - 49
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Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.
Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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