Physics – Plasma Physics
Scientific paper
Jun 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009jgra..11406206m&link_type=abstract
Journal of Geophysical Research, Volume 114, Issue A6, CiteID A06206
Physics
Plasma Physics
5
Magnetospheric Physics: Planetary Magnetospheres (5443, 5737, 6033), Magnetospheric Physics: Plasma Waves And Instabilities (2471), Space Plasma Physics: Wave/Particle Interactions (2483, 6984), Space Plasma Physics: Wave/Wave Interactions, Magnetospheric Physics: Substorms
Scientific paper
Narrowband emission is observed at Saturn centered near 5 kHz and 20 kHz and harmonics of 20 kHz. This emission appears to be in many ways similar to Jovian narrowband emission observed at higher frequencies. We analyze one example of this emission near a possible source region. In situ electron distributions suggest narrowband emission has a source region associated with electrostatic cyclotron harmonic and upper hybrid emission. Linear growth rate calculations indicate that the observed plasma distributions are unstable to the growth of electrostatic harmonic emissions. In addition, it is found that when the local upper hybrid frequency is close to 2 f ce or 3 f ce (f ce is the electron cyclotron frequency), electromagnetic Z mode and weak ordinary (O mode) emission can be directly generated by the cyclotron maser instability. In the presence of density gradients, Z mode emission can mode-convert into O mode emission, and this might explain the narrowband emission observed by the Cassini spacecraft.
Coates Andrew J.
Gurnett Donald A.
Menietti Douglas J.
Rymer Abigail M.
Santolik Ondrej
No associations
LandOfFree
Analysis of narrowband emission observed in the Saturn magnetosphere does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Analysis of narrowband emission observed in the Saturn magnetosphere, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analysis of narrowband emission observed in the Saturn magnetosphere will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1629767