Journal
ASTROPHYSICAL JOURNAL
Volume 696, Issue 1, Pages 567-573Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/696/1/567
Keywords
ISM: clouds; ISM: magnetic fields; polarization; turbulence
Categories
Funding
- NSF [AST 05-05230, AST 02-41356, AST 05-05124]
- Department of Astronomy
- Astrophysics of the University of Chicago
- NSERC
- Canada Research Chair
- Canada Foundation for Innovation
- Ontario Innovation Trust
- Western's Academic Development Fund
- CSO [AST 05-40882]
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We describe a method for determining the dispersion of magnetic field vectors about large-scale fields in turbulent molecular clouds. The method is designed to avoid inaccurate estimates of magnetohydrodynamic or turbulent dispersion-and help avoiding inaccurate estimates of field strengths-due to a large-scale, nonturbulent field structure when using the well known method of Chandrasekhar and Fermi. Our method also provides accurate, independent estimates of the turbulent to large-scale magnetic field strength ratio. We discuss applications to the molecular clouds OMC-1, M17, and DR21(Main).
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