What Role Do Magnetic Fields Play in Jets from Young Stars?

Details What Role Do Magnetic Fields Play in Jets from Young Stars? What Role Do Magnetic Fields Play in Jets from Young Stars?

Nov 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aps..dppcm1002r&link_type=abstract

American Physical Society, 46th Annual Meeting of the Division of Plasma Physics, 15-19 November, 2004, Savannah, GA. MEETING I

Physics

Plasma Physics

Scientific paper

The birth of stars involves not only the formation of accretion disks but also the generation of highly collimated jets/outflows. These outflows can stretch for several parsecs, transporting energy and momentum to the surrounding cloud and even, in some cases, producing turbulent cloud support against gravity. While it is very obvious that magnetic fields play a significant role in the generation and collimation of AGN jets, what function they have in jets from young stellar objects (YSOs) remains uncertain. This is primarily because we lack a good diagnostic tool of field strength in YSO jets although, ironically, we have excellent probes for their other basic parameters, e.g. velocity, density, temperature, etc. In this talk, I will review what we can infer about the importance of magnetic fields from a variety of sources, such as angular momentum transport, line ratios in the post-shock cooling zone and even, in some cases, gyro-synchrotron radiation.

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