General Axisymmetric Magnetohydrodynamic Flows: Theory and Solutions

Details General Axisymmetric Magnetohydrodynamic Flows: Theory and Solutions General Axisymmetric Magnetohydrodynamic Flows: Theory and Solutions

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...460..185c&link_type=abstract

Astrophysical Journal v.460, p.185

Astronomy and Astrophysics

Astronomy

12

Accretion, Accretion Disks, Galaxies: Jets, Magnetohydrodynamics: Mhd

Scientific paper

We formulate the theory of general axisymmetric, steady state, nonrelativistic, ideal magnetohydrodynamic (MHD) flows in the presence of pressure and gravity. Magnetic flux is continuously advected by the flow and accumulates in a region around the axis of symmetry. This situation might have direct astrophysical applications in accretion outflow scenarios around compact objects in stellar systems and active galactic nuclei. The present work is fundamentally different from all previous steady state analyses which have assumed that the poloidal flow velocity v_p_, is parallel to the poloidal magnetic field B_p_. We obtain the condition which determines the critical points of the flow. We also obtain self-consistent self-similar solutions which describe an accretion/outflow process around a compact object, under conditions allowing for magnetic flux advection.

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