  Previous numerical simulations have shown that strong winds can be produced
in the hot accretion flows around black holes. Most of those studies focus only
on the region close to the central black hole, therefore it is unclear whether
the wind production stops at large radii around Bondi radius. Bu et al. 2016
studied the hot accretion flow around the Bondi radius in the presence of
nuclear star gravity. They find that when the nuclear stars gravity is
important/comparable to the black hole gravity, winds can not be produced
around the Bondi radius. However, for some galaxies, the nuclear stars gravity
around Bondi radius may not be strong. In this case, whether winds can be
produced around Bondi radius is not clear. We study the hot accretion flow
around Bondi radius with and without thermal conduction by performing
hydrodynamical simulations. We use the virtual particles trajectory method to
study whether winds exist based on the simulation data. Our numerical results
show that in the absence of nuclear stars gravity, winds can be produced around
Bondi radius, which causes the mass inflow rate decreasing inwards. We confirm
the results of Yuan et al. which indicates this is due to the mass loss of gas
via wind rather convectional motions.
