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Tracing the Magnetic Field in Molecular Clouds

Houde, M. and Phillips, T. G. and Hildebrand, R. H. and Dowell, C. D. and Bastien, P. and Peng, R. and Vaillancourt, J. E. and Dotson, J. L. and Yoshida, H. (1997) Tracing the Magnetic Field in Molecular Clouds. In: The Dense Interstellar Medium in Galaxies. Springer Proceedings in Physics. No.91. Springer , Berlin, pp. 365-368. ISBN 978-3-642-62348-6.

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The orientation of the magnetic field vector at any given point in a molecular cloud can be specified with two parameters: α, its inclination angle to the line of sight, and β, its projection angle on the plane of the sky (eastward from north). Until recently, of these two angles, only β could be measured. At submillimeter wavelengths, this can be accomplished, for example, with polarization measurements of the continuum radiation emanating from elongated dust grains that are aligned by the local magnetic field [2]. The angle β is thus obtained from the angle of the polarization vector since the projection of the magnetic field vector in the plane of the sky is oriented at right angles to the polarization vector [5].

Item Type:Book Section
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Additional Information:© 1997 Springer-Verlag Berlin Heidelberg. The Caltech Submillimeter Observatory is funded by the NSF through contract AST 9980846 and the observations made with Hertz were supported by NSF Grants AST 9987441 and AST 0204886.
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Subject Keywords:Polarization Vector; Molecular Cloud; Magnetic Field Vector; Submillimeter Wavelength; Mill Imeter
Series Name:Springer Proceedings in Physics
Issue or Number:91
Record Number:CaltechAUTHORS:20200221-090156145
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:101448
Deposited By: Tony Diaz
Deposited On:21 Feb 2020 17:20
Last Modified:16 Nov 2021 18:02

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