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Giovannelli, F.;Martinez-Pais, I. G.
doi: 10.1007/BF00196631pmid: N/A
Abstract In this work we will try to give the most general panorama, comparatively with the conciseness, on SS Cygni which is the brightest dwarf nova. The dwarf novae form a sub-class of the more vaste panorama of the Cataclysmic Variables (CVs). For this reason firstly we will describe in general the CVs and the current theories which attempt to describe their physical behaviour (Sections 2 and 3). The up-to-date observational properties of SS Cygni (Section 4) and a discussion on their explanation within the framework of theories (Section 5) will allow us to draw the conclusions (Section 6) and to argue the most convenient line of investigation (Section 7) both experimental and theoretical for a better understanding of the underlying physics of these systems.
doi: 10.1007/BF00196632pmid: N/A
Abstract This paper reviews recent research on the theory and computer simulations of electromagnetic ion/ion instabilities and their consequences in space plasmas. ‘Ion/ion’ instabilities are growing modes in a collisionless plasma driven unstable by the relative streaming velocity v 0of two distinct ion components such that v 0is parallel or antiparallel to the uniform background magnetic field B 00. The space physics regimes which display enhanced fluctuations due to these instabilities and which are reviewed in this paper include the solar wind, the terrestrial foreshock, the plasma sheet boundary layer, and distant cometary environments.
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