Formation of Stationary Magnetohydrodynamic Outflows from a Disk by Time-dependent Simulations

Details Formation of Stationary Magnetohydrodynamic Outflows from a Disk by Time-dependent Simulations Formation of Stationary Magnetohydrodynamic Outflows from a Disk by Time-dependent Simulations

Jun 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apj...482..708r&link_type=abstract

Astrophysical Journal v.482, p.708

Astronomy and Astrophysics

Astronomy

59

Ism: Jets And Outflows, Magnetohydrodynamics: Mhd

Scientific paper

We report the discovery of a family of stationary magnetohydrodynamic (MHD) outflows from a disk found by time-dependent, axisymmetric MHD simulations. The initial poloidal magnetic field threading the disk was taken to be a tapered monopole field, with the field strength on the disk decreasing outwardly to small values. At the disk surface, matter was given a small initial push with a speed less than the slow magnetosonic speed. In the simulations, the outflowing matter is observed to be accelerated by magnetic and centrifugal forces up to velocities in excess of the fast magnetosonic speed and in excess of the escape speed.

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