Magneto-Hydrodynamical Models of the Knotty, Collimated Jet in Hen 2-90

Details Magneto-Hydrodynamical Models of the Knotty, Collimated Jet in Hen 2-90 Magneto-Hydrodynamical Models of the Knotty, Collimated Jet in Hen 2-90

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aspc..313..465l&link_type=abstract

Asymmetrical Planetary Nebulae III: Winds, Structure and the Thunderbird, Proceedings of the conference held 28 July - 1 August

Astronomy and Astrophysics

Astronomy

Scientific paper

A remarkably linear, bipolar, knotty jet was recently discovered in Hen 2-90, an object classified as a young planetary nebula (PN). Using two-dimensional magneto-hydrodynamical simulations, we investigate periodic variations in jet density and velocity as the mechanism for producing the jet and its knotty structures. From a detailed comparison between the Hα emission derived from our models to the observations, we find that a non-magnetized jet with density or velocity variations does not reproduce in detail the observed structure of the Hen 2-90 jet -- a magnetized jet with periodic velocity variations is required.

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