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Fig. 4


Trajectories of gas for Run B. The black dots located at 40Rs are starting points of the “test particles”. Different colors denote the trajectory of “test particles” starting from different θ angle. From this Figure we can see that the real wind trajectories, that is, the trajectories which extend from r = 40 Rs to large radius and never come back to cross 40 Rs are very few. Winds are very weak.

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