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Observations of turbulence in the diffuse interstellar medium

Published online by Cambridge University Press:  01 August 2006

John M. Dickey
John M. Dickey*
Affiliation:
School of Maths and Physics, University of Tasmania, Hobart 7001, Australia email: [email protected]
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Abstract

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The warm neutral medium, warm ionized medium, and cool neutral medium all show strong evidence for turbulence as a process dominating their structure and motions on a wide range of scales. The spatial power spectra of density fluctuations in all three phases are consistent with a Kolmogorov slope. Turbulence in the magnetic field in the diffuse medium can also be measured through the structure function of the Faraday rotation measure. With new surveys, new analysis techniques, and new telescopes, in the next few years it will be possible to measure the structure function of the magnetic field over a similarly wide range of scales. This will give a complete picture of the turbulence as a magneto-acoustic process.

Keywords

ISM: structureISM: cloudsISM: evolutionISM: kinematics and dynamicsISM: magnetic fields
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S237: Triggered Star Formation in a Turbulent ISM , August 2006 , pp. 1 - 8
Copyright
Copyright © International Astronomical Union 2007

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