Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsh43a1643s&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #SH43A-1643
Physics
2159 Plasma Waves And Turbulence, 2728 Magnetosheath, 2772 Plasma Waves And Instabilities (2471)
Scientific paper
Nonpropagating mirror-mode structures are commonly observed in many regions of natural plasma such as solar wind, planetary magnetosheaths, in cometary plasma, Io wake, terrestrial ring current and even on the outskirts of solar system. Mirror structures are typically observed in the shape of magnetic holes or peaks. The relatively low time resolution plasma data from the Cluster CIS instrument have been used to show that the magnetic holes are most commonly observed in a mirror stable plasma. However the duration of the magnetic hole is typically much smaller than time resolution of the Cluster plasma measurements. However, the THEMIS spacecraft are able to provide plasma parameters with a time resolution of 3 seconds. This enables the collection of a number of plasma distributions during the observation of a typical magnetic hole. The THEMIS data show that at the moment when the magnetic hole is observed the threshold of linear mirror instability is usually exceeded and the plasma is therefore mirror unstable. These experimental findings are explained by the nonlinear dynamics of mirror waves.
Pokhotelov O.
Sagdeev Roald
Sibeck David G.
Walker S. N.
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