Whistler waves in Freja observations

Physics – Plasma Physics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

11

Magnetospheric Physics: Auroral Phenomena (2407), Magnetospheric Physics: Plasma Waves And Instabilities, Space Plasma Physics: Nonlinear Phenomena, Space Plasma Physics: Wave/Particle Interactions

Scientific paper

Several examples of whistler wave packets accompanied by density cavities are detected in F4 experiments of Freja satellite. The density depletion seems to be a fixed structure in space from the cross-correlation of two Langmuir probes. The wavelet analysis shows the frequency drift from 1 kHz (below the low-hybrid frequency) to 200 Hz (below the proton cyclotron frequency). The wave packets are always associated with an extremely low frequency component at 20-30 Hz (around the oxygen ion cyclotron frequency). The method of the minimum variance is used to calculate the oblique propagation of the wave packets with an angle decreased from 31 to 17 degrees between the wave vector and the ambient magnetic field. The right polarization of the wave packets is shown in the direction of the ambient magnetic field. Moreover, the phase velocity of the wave packets is inversely proportional to the frequency. These features may support the formation of envelope solitary whistler waves.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Whistler waves in Freja observations 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 Whistler waves in Freja observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Whistler waves in Freja observations will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1020854

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.