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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). doi:10.1029/2001GL014587 ISSN 0094-8276.
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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 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, Engineering and Medicine > 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: | 0094-8276 | ||||
| Official Date: | 2002 | ||||
| Dates: |
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| Volume: | Vol.29 | ||||
| Number: | No.10 | ||||
| DOI: | 10.1029/2001GL014587 | ||||
| Status: | Peer Reviewed | ||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||
| Funder: | Leverhulme Trust (LT), Particle Physics and Astronomy Research Council (Great Britain) (PPARC) |
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