Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..402..317m&link_type=abstract
Approaching Micro-Arcsecond Resolution with VSOP-2: Astrophysics and Technologies ASP Conference Series, Vol. 402, proceedings o
Astronomy and Astrophysics
Astrophysics
Scientific paper
We carried out global three-dimensional resistive magnetohydrodynamic simulations of radiatively inefficient black hole accretion flows. The disk magnetic fields, amplified by MRI, create magnetic loops emerging from the disk. Subsequently, these loops are twisted by the differential rotation of the disk and form large-scale poloidal magnetic fields even when the initial magnetic field is purely azimuthal. Semi-relativistic outflows emerge along the large-scale poloidal magnetic fields. By analyzing the simulation results, we obtained 43-GHz image of the launching region of outflows. We also discuss the possibility of detecting dynamo-driven reversals of mean magnetic fields.
Machida Mami
Matsumoto Ryo
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