Vlasov simulations of Langmuir Electrostatic Decay and consequences for Type III observations
Abstract
The electrostatic decay enables energy transfer from a finite amplitude Langmuir to a backscattered daughter Langmuir wave and ion acoustic density fluctuations. This mechanism is thought to be a first step for the generation of type III solar radio emissions at twice the plasma frequency. The electrostatic decay is here investigated through Vlasov-Poisson simulations by considering Langmuir localized wave packets in the case Te = Tp. Simulation results are found to be in good agreement with recently reported observations from the STEREO mission of the electrostatic decay of beam-driven Langmuir waves during a type III burst.
- Publication:
-
Twelfth International Solar Wind Conference
- Pub Date:
- March 2010
- DOI:
- 10.1063/1.3395857
- arXiv:
- arXiv:1301.3066
- Bibcode:
- 2010AIPC.1216..288H
- Keywords:
-
- Vlasov equation;
- electric fields;
- Landau levels;
- solar wind;
- 52.65.Ff;
- 52.35.Fp;
- 71.70.Di;
- 96.60.Vg;
- Fokker-Planck and Vlasov equation;
- Electrostatic waves and oscillations;
- Landau levels;
- Particle emission solar wind;
- Astrophysics - Solar and Stellar Astrophysics;
- Astrophysics - Earth and Planetary Astrophysics;
- Physics - Plasma Physics;
- Physics - Space Physics
- E-Print:
- 4 pages, 4 figures, Solar Wind 12