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American Geophysical Union, Geophysical Research Letters, 20(37), p. n/a-n/a, 2010

DOI: 10.1029/2010gl045159

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Influence of hot plasma pressure on the global structure of Saturn’s magnetodisk

Journal article published in 2010 by N. Achilleos, P. Guio, C. S. Arridge, N. Sergis, R. J. Wilson ORCID, M. F. Thomsen, A. J. Coates
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

Using a model of force balance in Saturn's disk-like magnetosphere, we show that variations in hot plasma pressure can change the magnetic field configuration. This effect changes (i) the location of the magnetopause, even at fixed solar wind dynamic pressure, and (ii) the magnetic mapping between ionosphere and disk. The model uses equatorial observations as a boundary condition—we test its predictions over a wide latitude range by comparison with a Cassini high-inclination orbit of magnetic field and hot plasma pressure data. We find reasonable agreement over time scales larger than the period of Saturn kilometric radiation (also known as the camshaft period).