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Derivation of an Analytical Approximation of the Spectrum of Spinning Dust Emission

Stevenson, Matthew A. (2014) Derivation of an Analytical Approximation of the Spectrum of Spinning Dust Emission. Astrophysical Journal, 781 (2). Art. No. 113. ISSN 0004-637X. doi:10.1088/0004-637X/781/2/113.

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An analytical function for the spectrum of spinning dust emission is presented. It is derived through the application of careful approximations, with each step tested against numerical calculations. This approach ensures accuracy while providing an intuitive picture of the physics. The final result may be useful for fitting of anomalous microwave emission observations, as is demonstrated by a comparison with the Planck observations of the Perseus Molecular Cloud. It is hoped that this will lead to a broader consideration of the spinning dust model when interpreting microwave continuum observations, and that it will provide a standard framework for interpreting and comparing the variety of anomalous microwave emission observations.

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Additional Information:© 2014 American Astronomical Society. Received 2013 April 29; accepted 2013 December 17; published 2014 January 15. I thank Y. Ali-Haimoud, K. Cleary, C. Dickinson, B. Hensley, C. Hirata, T. Pearson, A. Readhead, C. Tibbs, and J. Villadsen for many useful conversations on the spinning dust radiation as this paper evolved. I also thank the anonymous referee for many insightful suggestions. This work was supported by the NSF grants AST-1010024 and AST-1212217.
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Subject Keywords: diffuse radiation; dust, extinction; radiation mechanisms: non-thermal; radio continuum: ISM
Issue or Number:2
Record Number:CaltechAUTHORS:20140321-100533408
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Official Citation:Derivation of an Analytical Approximation of the Spectrum of Spinning Dust Emission Matthew A. Stevenson 2014 ApJ 781 113
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:44443
Deposited On:21 Mar 2014 17:22
Last Modified:10 Nov 2021 16:52

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