Physics – Plasma Physics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsm13b2064w&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SM13B-2064
Physics
Plasma Physics
[6984] Radio Science / Waves In Plasma, [7867] Space Plasma Physics / Wave/Particle Interactions
Scientific paper
The observational data of THEMIS are adopted to identify possible equatorial emissions in the inner magnetosphere near the equatorial plane. By analyzing wave data from SCM (Search Coil Magnetometer) in the local afternoon sector for the year of 2008, two possible events are found. These events are both with emissions of frequencies at about 70Hz and 110Hz between fcH+ and flhr around 5RE. The analyzed wave vectors shows to be near perpendicular to the ambient geomagnetic fields. The ion velocities are with ring distributions at around 2000km/sec and the associated pitch-angle distribution are peaked in 90° at the event time, as measured by SST (Solid State Telescope). While for wave data at similar location with no specific emission events in the aforementioned frequency range, the corresponding ion velocities exhibit no clear ring distributions. The above results suggest that these events can be equatorial emissions.
Chen Rebecca
Jan Y.
Tam S. W.
Wang Kai
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