3D SIMULATIONS OF DISK ACCRETION TO AN INCLINED DIPOLE. HOT SPOTS AND VARIABILITY

Authors: Romanova M.M., Ustyugova G.V., Koldoba A.V., Lovelace R.V.E. 

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Fig. 1  Matter flow near the star and hot spots for the case of a relatively warm disk (Td =0 .03). The square panels show the surfaces of the density in the magnetospheric .ows (green color corresponds to r = 0.3 - 0.4, while yellow-green color to r = 0.6). Red lines are sample magnetic field lines; the dark-green lines show the sample streamlines of matter flow. The circular panels show density distribution in the hot spots for different misalignment angles Q. For Q = 15, 30 and 45, the magnetic axis is directed towards the observer, while for Q = 60, 75 and 90, it is directed at an angle 45 relative to the observer. It is shown by the crosses in the circular panels. The direction of the rotation axis is shown with the open circles. 

Fig. 2  Same as Figure 1 but for cooler disk (Td =0 .01).

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Fig. 4 An X - Z slice through the middle of the funnel stream at Q =15. The contour lines show the plane cross-section of the density distribution inside the funnel stream.The density changes exponentially from r =0 .2 (blue) to r =2 .0 (red).The density in the corona above the disk is r =0 .01 - 0.02. Red lines with arrows show selected magnetic field lines. The magnetic moment and the rotation axis W are shown.

 

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2000-2007, last updated on 29.01.07