Nonlinear stability of solar type 3 radio bursts. 2: Application to observations near 1 AU

Details Nonlinear stability of solar type 3 radio bursts. 2: Application to observations near 1 AU Nonlinear stability of solar type 3 radio bursts. 2: Application to observations near 1 AU

Dec 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978stin...7918871g&link_type=abstract

Nonlinear stability of solar type 3 radio bursts. 2: Application to observations near 1 AU

Physics

Magnetohydrodynamic Stability, Nonlinearity, Plasma Waves, Solar Radio Bursts, Electrical Resistivity, Electron Beams, Energetic Particles, Energy Spectra

Scientific paper

A set of rate equations including strong turbulence effects and anomalous resitivity are solved using parmeters which model several solar type 3 bursts. Exciter distributions observed at 1 AU are excitation of the linear bump-in-tail instability, amplifying Langmuir waves above the threshold for the oscillating two stream instability (OTSI). The OTSI, and the attendant anomalous resistivity produce a rapid spectral transfer of Langmuir waves to short wavelengths, out of resonance with the electron exciter. Further energy loss of the beam is thus precluded. The various parameters needed to model the bursts are extrapolated inside 1 AU with similar results. Again, the OTSI is excited and decouples the electron beam from the Langmuir radiation. Reabsorption of the Langmuir waves by the beam is shown to be unimportant in all cases, even at 0.1 AU. The theory provides a natural explanation for the observed realationship between radio flux, and the electron flux.

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