Two dimensional imaging observations of meter-decameter bursts associated with the February 1986 flare activity

Details Two dimensional imaging observations of meter-decameter bursts associated with the February 1986 flare activity Two dimensional imaging observations of meter-decameter bursts associated with the February 1986 flare activity

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987sici.symp...16g&link_type=abstract

In Alabama Univ., Huntsville. STIP Symposium on Physical Interpretation of Solar/Interplanetary and Cometary Intervals p 16 (SEE

Physics

Dimensions, Imagery, Interplanetary Medium, Solar Flares, Solar Radio Bursts, Decimeter Waves, Electrons, Magnetic Fields, Microwave Emission, Models, Shock Wave Interaction, X Ray Spectra

Scientific paper

An analysis is presented of the two dimensional imaging observations of a flare observed on 3 Feb. l986 using the Clark Lake Multifrequency Radioheliograph. The flare produced almost all types of Meter-decimeter radio emission: enhanced storm radiation, type III/V bursts, II and IV and flare continuum. The flare continuum had early (FCE) and late (FC II) components and the type II occurred during the period between these two components. Comparing the source positions of type III/V and FCE it was found that these bursts must have occurred along adjacent open and closed field lines, respectively. The positional analysis of type II and FC II implies that the nonthermal electrons responsible for FC II need not be accelerated by type II shock and this conclusion is further supported by the close association of FC II with a microwave peak. Using the positional and temporal analysis of all these bursts and the associated hard X-ray and microwave emissions, a schematic model is developed for the magnetic field configuration in the flaring region in which the nonthermal particles responsible for these bursts are confined or along which they propagate.

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