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2015

What frequencies of standing surface waves can the subsolar magnetopause support?

It is has been proposed that the subsolar magnetopause may support its own eigenmode, consisting of propagating surface waves which reflect at the northern/southern ionospheres forming a standing wave. While the eigenfrequencies of these so-called Kruskal-Schwartzschild (KS) modes have been estimated under typical conditions, the potential distribution of frequencies over the full range of solar wind conditions is not know. Using models of the magnetosphere and magnetosheath applied to an entire solar cycle\textquoterights w ...

Archer, M.; Plaschke, F.;

YEAR: 2015     DOI: 10.1002/2014JA020545

magnetopause; magnetosheath; Magnetosphere; Ulf; waves

Simulation of ULF wave modulated radiation belt electron precipitation during the 17 March 2013 storm

Balloon-borne instruments detecting radiation belt precipitation frequently observe oscillations in the mHz frequency range. Balloons measuring electron precipitation near the poles in the 100 keV to 2.5 MeV energy range, including the MAXIS, MINIS, and most recently the BARREL balloon experiments, have observed this modulation at ULF wave frequencies [e.g. Foat et al., 1998; Millan et al., 2002; Millan, 2011]. Although ULF waves in the magnetosphere are seldom directly linked to increases in electron precipitation since the ...

Brito, T.; Hudson, M.; Kress, B.; Paral, J.; Halford, A.; Millan, R.; Usanova, M.;

YEAR: 2015     DOI: 10.1002/2014JA020838

precipitation; Radiation belts; Ulf; ULF modulation

2014

Precipitation and energization of relativistic radiation belt electrons induced by ULF oscillations in the magnetosphere

There is a renewed interest in the study of the radiation belts with the recent launch of the Van Allen Probes satellites. The mechanisms that drive the global response of the radiation belts to geomagnetic storms are not yet well understood. Global simulations using magnetohydrodynamics (MHD) model fields as drivers provide a valuable tool for studying the dynamics of these MeV energetic particles. ACE satellite measurements of the MHD solar wind parameters are used as the upstream boundary condition for the Lyon-Fedder-Mob ...

Brito, Thiago;

YEAR: 2014     DOI:

0373:Geophysics; 0607:Electromagnetics; 0725:Atmospheric sciences; Atmospheric sciences; Earth sciences; Electromagnetics; Energization; Geophysics; precipitation; Pure sciences; Radiation belts; Ulf



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