First results of the STEREO-5 experiment - Evidence of ionospheric intensity scintillation of solar radio bursts at decameter wavelengths

Details First results of the STEREO-5 experiment - Evidence of ionospheric intensity scintillation of solar radio bursts at decameter wavelengths First results of the STEREO-5 experiment - Evidence of ionospheric intensity scintillation of solar radio bursts at decameter wavelengths

May 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978a%26a....65l..23p&link_type=abstract

Astronomy and Astrophysics, vol. 65, no. 3, May 1978, p. L23-L26. Research sponsored by the Centre National d'Etudes Spatiales.

Astronomy and Astrophysics

Astrophysics

4

Decametric Waves, Ionospheric Propagation, Scintillation, Solar Radio Bursts, Directivity, Mars Probes, Radiant Flux Density, Solar Corona

Scientific paper

It is observed from simultaneous measurements of radio bursts at 30 and 60 MHz from earth (the Nancay observatory) and from space (the Mars-7 probe) that large (up to 3 db) differences exist between the peak intensities reported from both sources, with a time scale range between 1 sec and 1 min. Ionospheric intensity scintillation is presented as the most likely mechanism for the discrepancy, noting that such scintillation is usually considered negligible in solar burst observations. Two implications for the finding are discussed: (1) that fast scintillation affects type III time profiles, and (2) that peak intensities are affected by slow scintillation.

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