Speaker
Shaaban Mohammed Shaaban
Description
See the full Abstract at http://ocs.ciemat.es/EPS2018ABS/pdf/O2.J301.pdf
Cumulative instabilities of the solar wind electron core and halo
temperature anisotropies, and their drift velocities
S.M.Shaaban1,2 , M. Lazar1,3 , S. Poedts1
1 Centre for Mathematical Plasma Astrophysics, KU Leuven, Leuven, Belgium
2 Theoretical Physics Research Group, Faculty of Sci., Mansoura University, Mansoura, Egypt
3 ITP IV, Weltraum- und Astrophysik, Ruhr-Universität Bochum, Bochum, Germany
In-situ measurements reveal two central components, i.e. thermal bi-Maxwellian core and a
bi-Kappa suprathermal halo, forming the electron velocity distribution in the solar wind. These
components may exhibit temperature anisotropies, which destabilize the electron anisotropy-
driven instabilities and core-halo relative velocity, which destabilize heat flux instabilities. In
the existing studies these two sources of free energy and the resulting instabilities are investi-
gated independent of each other. Here we present the results of an advanced study of the inter-
play of kinetic instabilities driven by the cumulative effect of relative drifting components and
their intrinsic temperature anisotropies. Such complex analysis leads to an important number of
various regimes of instability, and distinguishing between them becomes highly demanding.
