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Fractal dissipation of small-scale magnetic fluctuations in solar wind turbulence as seen by CLUSTER
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Kiyani, K., Chapman, Sandra C., Khotyaintsev, Y., Dunlop, M. and Sahraoui, F. (2010) Fractal dissipation of small-scale magnetic fluctuations in solar wind turbulence as seen by CLUSTER. In: 12th International Solar Wind Conference, St Milo, France, June 21-26, 2009. Published in: AIP Conference Proceedings, Vol.1216 pp. 136-139. ISBN 978-0-7354-0759-6. doi:10.1063/1.3395819 ISSN 0094-243X.
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Official URL: http://dx.doi.org/10.1063/1.3395819
Abstract
A robust multiscale analysis of high-frequency magnetic field measurements from the Cluster spacecraft is presented using complimentary measurements from the magnetometer and search-coil instruments; in a stationary interval of fast ambient solar wind. We show a surprising and novel result: that for time-scales smaller than the ion-gyro period the magnetic field fluctuations exhibit non-Gaussian monoscaling i.e. are globally scale invariant and can be characterized by a single scaling exponent and thus a single universal scaling function for the probability density. This presents new questions, as well as theoretical constraints, for determining how magnetic turbulent energy is dissipated in collisionless plasmas.
| Item Type: | Conference Item (Paper) | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Series Name: | AIP Conference Proceedings | ||||
| Journal or Publication Title: | AIP Conference Proceedings | ||||
| Publisher: | American Institute of Physics | ||||
| ISBN: | 978-0-7354-0759-6 | ||||
| ISSN: | 0094-243X | ||||
| Editor: | Maksimovic, M and Issautier, K and MeyerVernet, N and Moncuquet, M and Pantellini, F | ||||
| Official Date: | 2010 | ||||
| Dates: |
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| Volume: | Vol.1216 | ||||
| Number of Pages: | 4 | ||||
| Page Range: | pp. 136-139 | ||||
| DOI: | 10.1063/1.3395819 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Conference Paper Type: | Paper | ||||
| Title of Event: | 12th International Solar Wind Conference | ||||
| Type of Event: | Conference | ||||
| Location of Event: | St Milo, France | ||||
| Date(s) of Event: | June 21-26, 2009 |
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