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Finite size scaling in the solar wind magnetic field energy density as seen by WIND
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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 00948276

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Official URL: http://dx.doi.org/10.1029/2001GL014587
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 nonGaussian 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 FokkerPlanck 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, Interplanetary magnetic fields, Magnetohydrodynamic waves 
Journal or Publication Title:  Geophysical Research Letters 
Publisher:  American Geophysical Union 
ISSN:  00948276 
Official 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) 
References:  Bardou, F., and J.P. Bouchaud, A. Aspect and C. CohenTannoudji, Le´vy 
URI:  http://wrap.warwick.ac.uk/id/eprint/3866 
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