Hnat, B., Chapman, Sandra C., Rowlands, G. (George), Watkins, Nicholas W. and Farrell, W. M. (William M.). (2002) Finite size scaling in the solar wind magnetic field energy density as seen by WIND. Geophysical Research Letters, Vol.29 (No.10). ISSN 0094-8276

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Abstract

Statistical properties of the interplanetary magnetic field fluctuations can provide an important insight into the solar wind turbulent cascade. Recently, analysis of the Probability Density Functions (PDF) of the velocity and magnetic field fluctuations has shown that these exhibit non-Gaussian properties on small time scales while large scale features appear to be uncorrelated. Here we apply the finite size scaling technique to explore the scaling of the magnetic field energy density fluctuations as seen by WIND. We find a single scaling sufficient to collapse the curves over the entire investigated range. The rescaled PDF follow a non Gaussian distribution with asymptotic behavior well described by the Gamma distribution arising from a finite range Lévy walk. Such mono scaling suggests that a Fokker-Planck approach can be applied to study the PDF dynamics. These results strongly suggest the existence of a common, nonlinear process on the time scale up to 26 hours.

Item Type:	Journal Article
Subjects:	Q Science > QB Astronomy
Divisions:	Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	Solar wind, Magnetohydrodynamic waves, Sun -- Corona -- Magnetic fields, Interplanetary magnetic fields -- Statistical methods
Journal or Publication Title:	Geophysical Research Letters
Publisher:	American Geophysical Union
ISSN:	0094-8276
Date:	2002
Volume:	Vol.29
Number:	No.10
Identification Number:	10.1029/2001GL014587
Status:	Peer Reviewed
Access rights to Published version:	Open Access
Funder:	Leverhulme Trust (LT), Particle Physics and Astronomy Research Council (Great Britain) (PPARC)
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URI:	http://wrap.warwick.ac.uk/id/eprint/3839

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