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| Paper: |
Magneto-Hydrodynamical Models of the Knotty, Collimated Jet in Hen 2-90 |
| Volume: |
313, Asymmetrical Planetary Nebulae III |
| Page: |
465 |
| Authors: |
Lee, C.-F.; Sahai, R. |
| Abstract: |
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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