Kavli Affiliate: Feng Yuan
| First 5 Authors: Fangzheng Shi, Feng Yuan, Francesco Tombesi, Fu-guo XIe,
| Summary:
Theoretical and numerical simulations of black hole hot accretion flows have
shown the ubiquitous existence of winds and predicted their properties such as
velocity and mass flux. In this paper, we have summarized from literature the
physical properties of winds launched from low-luminosity active galactic
nuclei (LLAGN), which are believed to be powered by hot accretion flows, and
compared them with theoretical predictions. We infer that for both ultra-fast
outflows and hot winds, the observed wind velocity as a function of their
launching radius and the ratio between wind mass flux and black hole accretion
rate show good consistency with theoretical predictions. For the prototype
LLAGN M81* with abundant observational data, we have examined various observed
properties of wind in detail, including velocity, mass flux of the wind, the
power-law index of the radial profile of inflow rate, and the jet-to-wind power
ratio. Good agreements are found with theoretical predictions, providing strong
support to the theory of wind launched from hot accretion flows.
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