Global simulation of EMIC waves in the He+ band for 2001 April 21st storm from RCM-RAM-HOTRAY self-consistent modeling

Details Global simulation of EMIC waves in the He+ band for 2001 April 21st storm from RCM-RAM-HOTRAY self-consistent modeling Global simulation of EMIC waves in the He+ band for 2001 April 21st storm from RCM-RAM-HOTRAY self-consistent modeling

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsm53a1349c&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SM53A-1349

Physics

[2772] Magnetospheric Physics / Plasma Waves And Instabilities, [2778] Magnetospheric Physics / Ring Current

Scientific paper

Global distribution of Electromagnetic ion cyclotron (EMIC) wave spectrum in the He+ band is simulated for the 2001 April 21st storm using a self-consistent model, which combines three different codes, the Ring current and atmospheric interaction model (RAM), the Rice Convection Model (RCM), ray tracing code (HOTRAY incorporated with growth rate solver). The ring current H+ provides the source of free energy for EMIC excitation during the storm time, and significant wave gain occurs in the region inside the plume and at the eastward edge of the plume in the dusk sector and pre-midnight sector. The ability of resonating with MeV electrons is also evaluated. Minimum electron resonant energy is generally above 3 MeV. The energetic O+ component of ring current is overestimated in the simulation and thus suppresses significantly on the EMIC waves in the He+. However, the pattern of excitation region basically remains the same.

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