Dispersion of Magnetic Fields in Molecular Clouds. I

Roger H. Hildebrand; Larry Kirby; Jessie L. Dotson; Martin Houde; John E. Vaillancourt

doi:10.1088/0004-637x/696/1/567

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arXiv · 0811.0813

Dispersion of Magnetic Fields in Molecular Clouds. I

Roger H. Hildebrand·Larry Kirby·Jessie L. Dotson·Martin Houde·John E. Vaillancourt

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Abstract

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 large-scale, non-turbulent 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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Roger H. Hildebrand, Larry Kirby, Jessie L. Dotson, Martin Houde, John E. Vaillancourt. 2009-02-03. Dispersion of Magnetic Fields in Molecular Clouds. I. https://doi.org/10.1088/0004-637x%2F696%2F1%2F567

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