Physics – Plasma Physics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsm22a..05s&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SM22A-05
Physics
Plasma Physics
[6984] Radio Science / Waves In Plasma, [7867] Space Plasma Physics / Wave/Particle Interactions
Scientific paper
Whistler-mode chorus emissions are known for their capacity to interact with energetic electrons. We use data collected by the Cluster mission after 2005, when the orbit of the four Cluster spacecraft changed, thus facilitating the analysis of chorus in a large range of different radial distances from the Earth. We concentrate our analysis on the equatorial source region of chorus. We use multipoint measurements of the WBD and STAFF-SA instruments to characterize propagation and spectral properties of the observed waves. We show that intense whistler-mode emissions are found at large radial distances up to the dayside magnetopause. These emissions either have the form of hiss or they contain the typical structure of chorus wave packets. This result is supported by case studies as well as by statistical results, using the unprecedented database of Cluster measurements.
Cornilleau-Wehrlin Nicole
Gurnett Donald A.
Macúšová E.
Pickett Jolene S.
Santolik Ondrej
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