NDLI: Magnetic Fields in Molecular Clouds

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Magnetic Fields in Molecular Clouds

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Magnetic Fields in Molecular Clouds

Content Provider	Annual Reviews
Author	Crutcher, Richard M.
Description	Author Affiliation: •Department of Astronomy, University of Illinois, Urbana, Illinois 61801 (Richard M. Crutcher)
Abstract	This review examines observations of magnetic fields in molecular clouds and what those observations tell us about the theory of molecular cloud evolution and star formation. First, the review briefly summarizes classes of theoretical models of molecular clouds and specific predictions of the models that can be tested by observation. Then, the review describes the techniques for observing and mapping magnetic fields in molecular clouds, followed by discussion of important examples of observational studies using each technique. A synthesis of results from all observational techniques summarizes the current state, which is that though magnetic fields generally dominate turbulence, there is no definitive evidence for magnetic fields dominating gravity in molecular clouds or for ambipolar-diffusion-driven star formation. Finally, the review discusses prospects for advances in our observational capabilities with telescopes and instruments now beginning operation or under construction.
Starting Page	29
Ending Page	63
Page Count	35
File Format	HTM / HTML PDF
ISSN	00664146
e-ISSN	15454282
DOI	10.1146/annurev-astro-081811-125514
Volume Number	50
Language	English
Publisher Date	2012-05-29
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ambipolar diffusion Dust polarization Magnetohydrodynamic (MHD) turbulence Spectral-line polarization Star formation Zeeman effect
Content Type	Text
Resource Type	Article
Subject	Astronomy and Astrophysics Space and Planetary Science

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