Directivity of low frequency solar type III radio bursts

Details Directivity of low frequency solar type III radio bursts Directivity of low frequency solar type III radio bursts

Feb 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976soph...46..465f&link_type=abstract

Solar Physics, vol. 46, Feb. 1976, p. 465-473.

Physics

20

Directivity, Long Wave Radiation, Radiant Flux Density, Satellite Observation, Type 3 Bursts, Explorer 43 Satellite, Interplanetary Magnetic Fields, Low Frequencies, Radiation Distribution, Solar Wind

Scientific paper

The occurrence rate of type III solar bursts in the frequency range 4.9 MHz to 30 kHz is analyzed as a function of burst intensity and burst arrival direction. We find that (1) the occurrence rate of bursts varies inversely with the 1.5 power of the flux, and (2) the distribution of burst arrival directions at each frequency shows a significantly larger number of bursts observed west of the earth-sun line than east of it. This western excess in occurrence rate appears to be correlated with the direction of the average interplanetary magnetic field, and is interpreted as beaming of the observed burst radiation along the magnetic field direction.

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