Shocks Within HH 47A
A schematic of the shock fronts in the HH 47A region. The velocities
listed are with respect to the star. Fast jet gas overtakes the dense material
within HH 47A at the Mach disk, and this dense material in turn overtakes slower
jet material at the bow shock. Weak secondary shocks within the dense material
should be strongly magnetized. The densities and velocities shown are for the
`60/40' model described in the text.