On the time variability of the HH jet ejection process

Details On the time variability of the HH jet ejection process On the time variability of the HH jet ejection process

Feb 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011iaus..275..392d&link_type=abstract

Jets at all Scales, Proceedings of the International Astronomical Union, IAU Symposium, Volume 275, p. 392-395

Astronomy and Astrophysics

Astronomy

1

Hydrodynamics, Methods: Data Analysis, Methods: Numerical, Stars: Winds, Outflows, Ism: Herbig-Haro Objects, Ism: Jets And Outflows

Scientific paper

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).

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