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Are jets rotating at the launching?

Published online by Cambridge University Press:  21 October 2010

Noam Soker
Noam Soker*
Affiliation:
Department of Physics, Technion-Israel Institute of Technology, Haifa 32000Israel; soker@physics.technion.ac.il.
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Abstract

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I argue that the Doppler shift asymmetries observed in some young stellar object (YSO) jets result from the interaction of the jets with the circumstellar gas, rather than from jets' rotation. The jets do rotate, but at a velocity much below claimed values. During the meeting I carefully examined new claims, and found problems with the claimed jets' rotation. I will challenge any future observation that will claim to detect jet rotation in YSOs that requires the jets (and not a wind) to be launched from radii much larger than the accreting stellar radius. I conclude that the most likely jets' launching mechanism involves a very efficient dynamo in the inner part of the accretion disk, with a jets' launching mechanism that is similar to solar flares (coronal mass ejection).

Keywords

ISM: jets and outflowsaccretion disks
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Highlights H15: Highlights of Astronomy , November 2009 , pp. 249 - 250
Copyright
Copyright © International Astronomical Union 2010

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