Amplitudes and frequency sweep rates of chorus wave packets

Details Amplitudes and frequency sweep rates of chorus wave packets Amplitudes and frequency sweep rates of chorus wave packets

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsm53b1382m&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SM53B-1382

Physics

[2772] Magnetospheric Physics / Plasma Waves And Instabilities

Scientific paper

Chorus is a wide-spread type of discrete electromagnetic emission which consists of individual chorus wave packets and plays an important role in the mechanism of generating relativistic electrons in the outer radiation belt during geomagnetic storms. Measurements of whistler-mode chorus wave packets provided by the WBD instrument onboard the Cluster spacecraft give us information about temporal and spatial variations of their amplitudes and their frequency sweep rates (df/dt). We discuss these properties in relation to the total electron density measured by the Whisper active sounder. For both types of chorus elements (falling and rising tones) we have found that the frequency sweep rate is a decreasing function of the plasma density, consistent with the backward wave oscillator (BWO) mechanism and 1-D Vlasov Hybrid numerical simulations. Our results also suggest that the frequency sweep rate increases with increasing chorus amplitudes.

Affiliated with

Also associated with

No associations

Rating

Amplitudes and frequency sweep rates of chorus wave packets 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 Amplitudes and frequency sweep rates of chorus wave packets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Amplitudes and frequency sweep rates of chorus wave packets will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1881754