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The impact of cold electrons and cold ions in magnetospheric physics
Delzanno, Gian Luca; Borovsky, Joseph E.; Henderson, Michael G. +3 more
A review of the impact of the cold-ion and cold-electron populations in the Earth's magnetosphere is presented. The cold populations are defined by total energy less than approximately 100 eV, i.e. in the energy range which is strongly affected by spacecraft charging and that often dominates the total plasma density. We also include the warm plasm…
Global and local processes of thin current sheet formation during substorm growth phase
Artemyev, A. V.; Runov, A.; Angelopoulos, V. +4 more
Formation of thin current sheets in Earth's magnetotail is a critical element of the magnetosphere dynamics. The configuration and stability of these thin current sheets control the onset of magnetic reconnection and particle acceleration in the magnetotail during substorms and other geomagnetic activities. In recent years, multipoint observations…
HYPERS simulations of solar wind interactions with the Earth's magnetosphere and the Moon
Chen, Li-Jen; Roytershteyn, Vadim; Omelchenko, Yuri A. +2 more
The hybrid simulations, where the ions are treated kinetically and the electrons as a fluid, seek to describe ion microphysics with maximum physical fidelity. The hybrid approach addresses the fundamental need for space plasma models to incorporate physics beyond magnetohydrodynamics. Global hybrid simulations must account for a wide range of both…
The Dynamics of the Alfvénic Oval
Keiling, Andreas
The auroral oval is a well-established concept, introduced more than five decades ago. The Alfvénic oval, on the other hand, is a very recent concept, which has been revealed in both observational and numerical studies. This is the first review of the global Alfvénic oval, while also defining primary, secondary and tertiary layers of the Alfvénic …
The role of magnetospheric plasma in solar wind-magnetosphere coupling: A review
Walsh, Brian M.; Zou, Ying
A variety of magnetospheric plasma populations have been proposed to impact solar wind-magnetosphere coupling. These magnetospheric populations could mass load the dayside magnetopause and include the plasmaspheric plume, plasma cloak, ion plasma sheet, and dayside ion outflow. Each has different densities, ion composition, and spatial/temporal oc…
Relations among eruptive prominence properties, flare evolution and CME kinematics in large solar energetic particle events
Koleva, K.; Duchlev, P.; Dechev, M.
We report a detailed study of the relationship between solar filament eruption, flare productivity and CME kinematics relevant to Solar Energetic Particle (SEP) events. We analyze kinematics and morphological behaviors of 32 filament eruptions appearing during the Solar Cycle 24, between Aug 14, 2010 and April 18, 2016. For our analysis a high res…