Matches in SemOpenAlex for { <https://semopenalex.org/work/W3113019054> ?p ?o ?g. }
- W3113019054 endingPage "1585" @default.
- W3113019054 startingPage "1568" @default.
- W3113019054 abstract "ABSTRACT Observations of emission lines in active galactic nuclei (AGNs) often find fast (∼1000 km s−1) outflows extending to kiloparsec scales, seen in ionized, neutral atomic and molecular gas. In this work we present radiative transfer calculations of emission lines in hydrodynamic simulations of AGN outflows driven by a hot wind bubble, including non-equilibrium chemistry, to explore how these lines trace the physical properties of the multiphase outflow. We find that the hot bubble compresses the line-emitting gas, resulting in higher pressures than in the ambient interstellar medium or that would be produced by the AGN radiation pressure. This implies that observed emission line ratios such as [O iv]$_{25 , rm {mu m}}$ / [Ne ii]$_{12 , rm {mu m}}$, [Ne v]$_{14 , rm {mu m}}$ / [Ne ii]$_{12 , rm {mu m}}$, and [N iii]$_{57 , rm {mu m}}$ / [N ii]$_{122 , rm {mu m}}$ constrain the presence of the bubble and hence the outflow driving mechanism. However, the line-emitting gas is under-pressurized compared to the hot bubble itself, and much of the line emission arises from gas that is out of pressure, thermal and/or chemical equilibrium. Our results thus suggest that assuming equilibrium conditions, as commonly done in AGN line emission models, is not justified if a hot wind bubble is present. We also find that ≳50 per cent of the mass outflow rate, momentum flux, and kinetic energy flux of the outflow are traced by lines such as [N ii]$_{122 , rm {mu m}}$ and [Ne iii]$_{15 , rm {mu m}}$ (produced in the 10$^{4} , rm {K}$ phase) and [C ii]$_{158 , rm {mu m}}$ (produced in the transition from 10$^{4} , rm {K}$ to 100 K)." @default.
- W3113019054 created "2020-12-21" @default.
- W3113019054 creator A5013583777 @default.
- W3113019054 creator A5018606495 @default.
- W3113019054 creator A5071642553 @default.
- W3113019054 date "2021-02-27" @default.
- W3113019054 modified "2023-10-17" @default.
- W3113019054 title "Unravelling the physics of multiphase AGN winds through emission line tracers" @default.
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