Wind Spacecraft Observations of Solar Impulsive Electron Events Associated with Solar Type III Radio Bursts

摘要: We present Wind spacecraft observations of solar impulsive electron events associated with locally generated Langmuir waves during type III radio bursts. The electrons had energies from ~600 eV to greater than 300 keV. Local emissions these fluxes generally coincided the arrival 2-12 keV electrons. A survey 27 over 1 yr shows that there were few occurrences distributions (~96 s averaged) unstable and none a substantial growth rate (>3 × 10-2 s-1) or endured for more 96 s. Intense occurred on 1995 April 2 are studied in detail. Marginally stable (plateaued) occasionally periods local emissions, but otherwise stable. These suggest kinetic processes modifying distribution also other one-dimensional quasilinear relaxation involved. find often oblique waves, such as quasi-electrostatic whistler electromagnetic ion cyclotron suggesting competition between may be important. There several features noteworthy. Nondispersive flux modulations visible many (also published ISEE 3 data) ~1-4 electrons, hydromagnetic instability have accompanied lowest energy fluxes. data differ spectra events. recorded only high-energy (>10 keV) fluxes, whereas substantially higher ratio flares could not been magnetically well connected satellite.