Rapid formation of relativistic electron flux by whistler-mode chorus emissions in the Earth's inner magnetosphere

Details Rapid formation of relativistic electron flux by whistler-mode chorus emissions in the Earth's inner magnetosphere Rapid formation of relativistic electron flux by whistler-mode chorus emissions in the Earth's inner magnetosphere

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsm13b2045m&link_type=abstract

American Geophysical Union, Fall Meeting 2011, abstract #SM13B-2045

Physics

[0654] Electromagnetics / Plasmas, [0689] Electromagnetics / Wave Propagation, [2720] Magnetospheric Physics / Energetic Particles: Trapped, [2730] Magnetospheric Physics / Magnetosphere: Inner

Scientific paper

We analyze the mechanisms of acceleration of energetic electrons in the Earth's radiation belts by using test particle simulations. Chorus waves with rising frequency are generated at the geomagnetic equator due to the interaction between chorus wave and high-energy electrons trapped by the wave potential, and propagate in both northward and southward directions along the Earth's dipole magnetic field. The rapidly increasing frequency and amplitude are determined by model chorus equations. By taking into account the adiabatic variation of the energetic particle distribution, we determine the resonant current. Then by solving general wave equations applying backward differential method, we obtain the time evolutions of the chorus wave frequency and amplitude along the Earth's dipole magnetic field. By using this method, we reproduce the chorus emissions. The source particles are assumed to be located uniformly along magnetic field line, and initial pitch angles at the magnetic equator are assumed to be 5 to 90 degrees. Particles are evenly distributed in gyro-phase, and are assumed to take the form of a delta function in momentum space. Following interaction with chorus emissions, we calculate a distribution function which correspond to a Green's function for the chorus interaction. By repeating this process at different momentum, we thereby obtain a numerical Green's function as a function of the pitch angle and momentum. We follow time evolution of the distribution function of electrons by the interaction with a series of chorus emissions based on this numerical Green's function method.

Affiliated with

Also associated with

No associations

Rating

Rapid formation of relativistic electron flux by whistler-mode chorus emissions in the Earth's inner 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 Rapid formation of relativistic electron flux by whistler-mode chorus emissions in the Earth's inner magnetosphere, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rapid formation of relativistic electron flux by whistler-mode chorus emissions in the Earth's inner magnetosphere will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1889349