Published October 2011
| public
Journal Article
Variable jets with non-top hat ejection cross sections: a model for the knots of the HH 34 jet
Abstract
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 H] 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.
Additional Information
© 2011 Instituto de Astronomía, Universidad Nacional Autónoma de México. Received 2010 December 15; accepted 2011 May 9. This work was supported by the Conacyt grants 61547, 101356 and 101975. We acknowledge the support of E. Palacios of the ICN-Universidad Nacional Autόnoma de México computing staff. We also thank an anonymous referee for helpful comments.Additional details
- Eprint ID
- 27706
- Resolver ID
- CaltechAUTHORS:20111109-105459761
- 61547
- CONACyT
- 101356
- CONACyT
- 101975
- CONACyT
- ICN-Universidad National Autόnoma de México
- Created
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2011-11-09Created from EPrint's datestamp field
- Updated
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2020-03-09Created from EPrint's last_modified field