Magnetized disk without outflow object

I simulated the circumnuclear disk without outflow object and extended the simulation time from 105 to 106 yr (corresponds to 3 orbital timescales at the accretion disks outer rim (4 pc) and to 100 orbital timescales at the "inner rim" 0.4 pc).

The first animation shows the 3D mass density. After ca. 40% of the simulation time the disk reaches a more or less settled state (i.e. its behaviour is not dominated by the initial conditions anymore). So I think 106 yr is an adequate simulation time.

The second animation shows egde-on and face-on views of the magnetic energy density with streamlines. We see that the ambient medium is in a quite turbulent state, with field strengths that vary by two orders of magnitude and magnetic loops that move away from the disk.

It seems that even without outflow object the magnetic field at the z-axis is converted into a vertical field. This can be seen best in the third Animation, where I plot the normalized z-component of the magnetic field.

​Animation of the 3D mass density

​Animation of the magnetic energy density (face-on and edge-on)

​Animation of the normalized Bz-component

Mass density:

Magnetic Fields (face-on and edge-on):

Magnetic Fields (normalized Bz-component):

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