Physics – Plasma Physics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsm13b2063h&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SM13B-2063
Physics
Plasma Physics
[2772] Magnetospheric Physics / Plasma Waves And Instabilities, [2774] Magnetospheric Physics / Radiation Belts, [7845] Space Plasma Physics / Particle Acceleration, [7867] Space Plasma Physics / Wave/Particle Interactions
Scientific paper
Low-frequency electromagnetic emissions (usually called equatorial noise) are often detected by spacecraft near the Earth's geomagnetic equator. These fast magnetosonic waves can accelerate electrons and are believed to play an important role in transferring energy from the ring current particles to the Van Allen radiation belt. The Polar Plasma Wave Instrument (PWI) often detected these waves below a few hundred Hertz when the spacecraft was near the geomagnetic equator. These emissions showed a wide range of frequency structure, from macroscopic structure (funnel-shaped spectrum) to finer frequency structure (narrow frequency bands with a spacing of only a few Hertz). The Cassini spacecraft also detected low frequency electromagnetic emissions near the Earth's magnetic equator during its Earth flyby. A survey of the properties of these emissions will be presented.
Gurnett Donald A.
Hospodarsky George B.
Kurth Willaim S.
Menietti Douglas J.
Santolik Ondrej
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