Physics – Plasma Physics
Scientific paper
Nov 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aps..dppem1001b&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
Most stars produce highly collimated jets during their birth. Stellar jets have velocities ranging from less than 100 to over 1,000 km/s, attain lengths of 10s of light-years, and play a major role in the generation of interstellar turbulence. Protostellar jets exhibit physical properties ranging from weakly ionized, mostly molecular, and dusty media to fully ionized plasmas. Most stellar jets are probably accelerated and collimated by MHD processes. Protostellar jets are ideal laboratories for the investigation of the launch, collimation, and termination of all types of astrophysical jet because radial velocities, proper motions, densities, and composition can be measured. Jet symmetries provide evidence for variability in mass-loss rate, velocity, orientation, and degree of collimation. I will review recent observations and theoretical models of jet production, propagation, and interactions with surrounding radiation fields and interstellar media.
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