Physics – Plasma Physics
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3719105m&link_type=abstract
Geophysical Research Letters, Volume 37, Issue 19, CiteID L19105
Physics
Plasma Physics
9
Radio Science: Waves In Plasma (7867), Magnetospheric Physics: Magnetosphere: Inner, Planetary Sciences: Solar System Objects: Saturn, Space Plasma Physics: Radiation Processes
Scientific paper
We calculate growth rates for extraordinary mode Saturnian kilometric radiation generated by the electron cyclotron maser instability using a ring-type (DGH) electron phase distribution model fitted to measured electron energy distributions in Saturn's auroral acceleration region. The observed distributions are unstable in spatially isolated regions of transverse linear size of order 103 km. Each unstable region has a growth rate consistent with amplification of background radiation to the peak observed intensity, approximately 14 electric field e-foldings. The observed propagation direction and frequency decrement below the electron cyclotron frequency are also consistent with the CMI growth model.
Arridge Chris
Cecconi Baptiste
Gurnett Donald A.
Kurth William
Lamy Laurent
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