Influence of Hot Plasma Pressure on the Global Structure of Saturn's Magnetodisk

Autor:	Achilleos, N., Guio, P., Arridge, C. S., Sergis, N., Wilson, R. J., Thomsen, M. F., Coates, A. J.
Rok vydání:	2010
Předmět:	Astrophysics - Earth and Planetary Astrophysics Physics - Space Physics
Druh dokumentu:	Working Paper
DOI:	10.1029/2010GL045159
Popis:	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). Comment: 15 pages, 3 figures, accepted for publication in GRL
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1008.3791 Zobrazit plný text záznamu View this record from Arxiv