The Subaru Seminar is
usually held in Room 104 of the Hilo Base Facility, adjacent
to the main lobby. Everyone is welcome to attend. If you are
interested in giving a seminar, please contact Subaru seminar organizers
(Tae-Soo Pyo, Sherry Yeh, Nagayoshi Ohashi)
by email : sseminar_at_subaru.naoj.org (please change"_at" to @).
December 9, Tuesday 11:00 am, 104A
" Radiation Hydrodynamic Simulations of Line-Driven Disk Winds "
Blueshifted absorption lines in the spectra suggest the existence of the outflows in active galactic nuclei (AGNs). Using two-dimensional radiation hydrodynamic simulations, we investigate the origin of the outflows. We found that the radiation force due to the spectral lines generates strong winds (line-driven disk winds) that are launched from the inner region of accretion disks (~ 30 Schwarzschild radii). In a wide range of black hole masses and Eddington ratios, funnel-shaped disk winds appear, in which dense matter is accelerated outward with an opening angle of ~70-80 degrees and with 10% of the light speed. We find that the line-driven winds reproduce the velocity, the column density, and the ionization state of Ultra Fast Outflows (UFOs), which is one of typical outflows in AGNs.
Seminars are also held at JAC,