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On the time variability of the HH jet ejection process

Published online by Cambridge University Press:  24 February 2011

Fabio De Colle
Fabio De Colle*
Affiliation:
Astronomy & Astrophysics Department, University of California, Santa Cruz, CA 95064, USA. email: [email protected]
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Abstract

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Two-dimensional emission line images of the HH30 jet were recently used (De Colle et al. 2010) to recover the three-dimensional structure of the jet by applying standard tomographic technique (“Tikhonov regularization techniques”). In this paper I show that it is possible to determine the ejection history of the HH30 jet by directly comparing the outcome of numerical simulations with the results of the tomographic inversion. In particular, it is shown that the HH30 jet electron density map is best reproduced by assuming a velocity variation at the base of the jet with a large scale periodicity (with a period of ~3 yrs) added to small scales velocity variation (with periods ≲months).

Keywords

hydrodynamicsmethods: data analysismethods: numericalstars: windsoutflowsISM: Herbig-Haro objectsISM: jets and outflows
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S275: Jets at all Scales , September 2010 , pp. 392 - 395
Copyright
Copyright © International Astronomical Union 2011

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