Simulations of the circumnuclear disk with a larger inner cavity -- Marvin

I did some simulations of the circumnuclear disk with a larger inner cavity. My previous simulations, which are shown in the first figure below, have an inner cavity with a radius of 1 pc. The new simulations have an inner cavity of 2 pc and are shown in the second figure.

The plots show radial profiles for the surface density for Model 1 (without magnetic field but with outflow, dotted lines), Model 2 (with magnetic fields and with outflow, dashed lines) and Model 3 (without magnetic fields and without central outflow, solid lines). The vertical line marks the location of the disk's initial inner rim. The time is given in units of the orbital time-scale at 1 pc, which is 4.5e4 yr. The profiles have been calculated by using radial bins of the surface density with a bin size of 0.02 pc.

In the simulations with a small cavity we found that for Model 1 the disk was moving rapidly inwards, and that for Model 2 the inflow was to some extent suppressed by the magnetic field.

With a larger cavity the situation seems different, now for Model 2 the disk material moves inwards much faster than for Model 1, only after a very long time (note that the last subplot of the second figure corresponds to 22 orbital timescales and not 13 orbital timescales as in the first figure) the surface density of Model 2 is again lower than the surface density of Model 1.

According to these new results, is our previous statement that the magnetic field suppresses the inflow of material towards the black hole still valid?

Attachments (2)

Download all attachments as: .zip

Comments

No comments.