Abstract
ABSTRACT Mechanisms giving rise to the moving emission lines in the unique emission-line object SS 433 are considered based on several sets of spectra taken on consecutive nights. The evidence is consistent with the view that the moving lines consist of potentially separable components, called bullets, that represent individual ejection events along one of the two beams. A correlation between the motions of bullets from the two beams is also observed, although no light travel time effects on the motions of the two moving lines are evident. Observations of an approximately six-day variation and stochastic jitter in moving line velocities are also noted.
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