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Nemeth et al (Revised Resubmitted 6 May 2016, accepted 13 July) PSS3087R2.pdf (1.44 MB)

Periodic motion of the magnetodisk as a cause of quasi-periodic variations in the Kronian magnetosphere

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posted on 2017-06-07, 14:42 authored by Z . Nemeth, K. Szego, L. Foldy, Stanley W. H. Cowley, G. Provan, M. Thomsen
Most of the phenomena that describe the magnetized plasma filling the huge magnetosphere of Saturn exhibit periodic behavior. The fundamental period reflected in many magnetospheric phenomena is the rotational period of the planet, but the relationship is not at all trivial. In most cases clear periodic behavior can be found only for relatively short time intervals, and often even in these intervals abrupt phase-shifts occur and non-rotational frequencies appear. Several sophisticated methods have been developed to filter out interfering fluctuations and find the basic periodicity and phase of the variations. Although these methods proved to be very useful, some information is inevitably lost in the process. To recover this otherwise lost information we follow a different strategy to analyse the quasi-periodic variations of the plasma properties. We assume that the motion of the magnetodisk is periodic and that the observed quasi-periodic variations are due to the interplay of this periodic motion and the effects governing the spatial dependence of the plasma parameters (F), especially their dependence on the distance (d) from the central sheet of the magnetodisk. We found that relatively simple F(d) functions are able to reproduce the observed complex temporal dependence of the plasma properties.

History

Citation

Planetary and Space Science, 2016, 130, pp. 54-59

Author affiliation

/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Physics and Astronomy

Version

  • AM (Accepted Manuscript)

Published in

Planetary and Space Science

Publisher

Elsevier

issn

0032-0633

Acceptance date

2016-07-04

Copyright date

2016

Available date

2017-07-15

Publisher version

http://www.sciencedirect.com/science/article/pii/S0032063316301787?via=ihub

Notes

The file associated with this record is embargoed until 12 months after the date of publication. The final published version may be available through the links above.

Language

en

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