Variable Jets with Non-Top Hat Ejection Cross Sections: A Model For The Knots of the HH 34 Jet

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 regions in predicted intensity maps. We then compute 3-mode models (with parameters appropriate for the HH 34 jet), and compare predicted intensity maps with archival HST images of HH 34. We find that a model with a moderate edge-to-center velocity ratio produces knot structures with morphologies and time-variabilites with clear similarities to the observations of HH 34.

Bibliographic Details

Main Authors:	Raga,A. C., Noriega-Crespo,A., Kajdic,P., Colle,F. De, López-Cámara,D., Esquivel,A.
Format:	Digital revista
Language:	English
Published:	Universidad Nacional Autónoma de México, Instituto de Astronomía 2011
Online Access:	http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0185-11012011000200007
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