Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..393...51o&link_type=abstract
The seventh astrophysical conference: Star formation, near and far. AIP Conference Proceedings, Volume 393, pp. 51-62 (1997).
Astronomy and Astrophysics
Astrophysics
2
Star Formation, Origin, Formation, Evolution, Age, And Star Formation, Electric And Magnetic Fields, Molecular Clouds, H2 Clouds, Dense Clouds, And Dark Clouds
Scientific paper
Magnetized turbulence is believed to play an important role in the evolution of star-forming clouds in our Galaxy. I summarize the properties of these clouds, and outline the distinctions between various regimes of turbulence. I then present arguments and supporting calculations that in such clouds, MHD turbulence with mean magnetic field strengths of a few ×10μG is able to (1) preserve clouds against self-gravitating collapse for >10 Myr, (2) yield velocity power spectra ~v(k)~k-1/2 comparable to observations, and (3) generate very inhomogeneous density structure, in which lumps often coincide with discontinuities in velocities and magnetic field directions.
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