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Variable jets with non-top hat ejection cross sections: a model for the knots of the HH 34 jet

Raga, A. C.; Noriega-Crespo, A.; Esquivel, A. +3 more

We compute axisymmetric, single-sinusoidal mode variable ejection models with a non-top hat ejection velocity cross section. We find that for decreasing edge-to-center velocity ratios one obtains internal working surfaces with progressively more extended bow shock wings. These wings produce [S II] emission which partially fills in the inter-knot r…