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Are jets rotating at the launching?

Published online by Cambridge University Press:  21 October 2010

Noam Soker*
Affiliation:
Department of Physics, Technion-Israel Institute of Technology, Haifa 32000Israel; [email protected].
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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).

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2010

References

Bacciotti, F., Ray, T. P., Mundt, R., Eislöffel, J., & Solf, Jo.ApJ, 576, 222 (B2002)CrossRefGoogle Scholar
Cerqueira, A. H., Velazquez, P. F., Raga, A. C., Vasconcelos, M. J., & de Colle, F. 2006, A&A, 448, 231Google Scholar
de Gouvei Adal Pino, E. M. & Lazarian, A. 2005, A&A, 441, 845Google Scholar
de Gouvei ADal Pino, E. M., Piovezan, P., Kadowaki, L., Kowal, G., & Lazarian, A., this proceedings (IUA JD 7 at the XXVIIth IAU General Assembly)Google Scholar
Laor, A. & Behar, E. 2008, MNRAS, 390, 847CrossRefGoogle Scholar
Lee, C.-F., et al. 2007, ApJ, 670, 1188CrossRefGoogle Scholar
Lee, C.-F., et al. 2008, ApJ, 685, 1026Google Scholar
Lee, C.-F., et al. 2009. ApJ, 699, 1584CrossRefGoogle Scholar
Soker, N. 2005, A&A, 435, 125Google Scholar
Soker, N. 2007a, astro-ph/0703474Google Scholar
Soker, N. 2007b, IAUS, 243, 195 (arXiv:0706.4241).CrossRefGoogle Scholar
Soker, N. & Vrtilek, S. D. 2009, arXiv:0904.0681Google Scholar
Zapata, L. A., Schmid-Burgk, J., Muders, D., Schilke, P., Menten, K., & Guesten, R. 2009, A&A in pressGoogle Scholar