Two-dimensional Hybrid Simulations of Kinetic Plasma Turbulence: Current and Vorticity vs Proton Temperature

0472086 - ASÚ 2017 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Franci, L. - Hellinger, Petr - Matteini, L. - Verdini, A. - Landi, S.
Two-dimensional Hybrid Simulations of Kinetic Plasma Turbulence: Current and Vorticity vs Proton Temperature.
Solar Wind 14: Proceedings of the Fourteenth International Solar Wind Conference. Melville: American Institute of Physics, 2016, 040003/1-040003/4. AIP Conference Proceedings, 1720. ISBN 9780735413672. ISSN 0094-243X.
[Solar Wind 14. Weihai (CN), 22.06.2015-26.06.2015]
Institucionální podpora: RVO:67985815
Klíčová slova: solar-wind turbulence * scales * hybrid simulations
Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika

Proton temperature anisotropies between the directions parallel and perpendicular to the mean magnetic field are usually
observed in the solar wind plasma. Here, we employ a high-resolution hybrid particle-in-cell simulation in order to investigate
the relation between spatial properties of the proton temperature and the peaks in the current density and in the flow vorticity. Our
results indicate that, although regions where the proton temperature is enhanced and temperature anisotropies are larger correspond
approximately to regions where many thin current sheets form, no firm quantitative evidence supports the idea of a direct causality
between the two phenomena. On the other hand, quite a clear correlation between the behavior of the proton temperature and the
out-of-plane vorticity is obtained.
Trvalý link: http://hdl.handle.net/11104/0269437