Formation of giant molecular clouds and helical magnetic fields by the Parker instability

Details Formation of giant molecular clouds and helical magnetic fields by the Parker instability Formation of giant molecular clouds and helical magnetic fields by the Parker instability

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991natur.353..633s&link_type=abstract

Nature (ISSN 0028-0836), vol. 353, Oct. 17, 1991, p. 633-635.

Astronomy and Astrophysics

Astronomy

32

Interstellar Magnetic Fields, Magnetohydrodynamic Stability, Molecular Clouds, Star Formation, Carbon Monoxide, Magnetic Field Configurations, Magnetohydrodynamic Waves, Optical Polarization, Radio Sources (Astronomy)

Scientific paper

It is suggested that the Orion molecular cloud complex formed through the Parker instability (the buoyancy of a magnetic field entrained in matter) and that the helical filament found by Uchida et al. (1991) in the L1641 in the Orion cloud complex is the result of spinning gas falling along the magnetic field and twisting it. The twisted magnetic field, unlike a purely planar field, suppresses the Parker instability on small scales, allowing the generation of finite clouds rather than general turbulence.

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