Solar X-ray flares and their corresponding sudden ionospheric disturbances
Abstract
Large-scale disturbances on the solar disk and in the earth's ionosphere and magnetosphere in early August 1972 are described in terms of solar X-ray flares and sudden ionospheric disturbances (SIDs). The data on the X-ray flares were obtained by SOLRAD 10-Explorer 44 and SOLRAD 9-Explorer 37 and those on the SIDs were obtained through various terrestrial radio propagation circuits. Time variations of the solar X-ray flux intensities are summarized, and the properties of four very large-scale X-ray events are described together with their corresponding SIDs. It is concluded that the magnitude of these events was unprecedented and that the events were accompanied by greatly enhanced solar gamma and EUV fluxes.
- Publication:
-
Radio Research Laboratory, Journal
- Pub Date:
- 1974
- Bibcode:
- 1974RaRLJ..21..311O
- Keywords:
-
- Earth Magnetosphere;
- Satellite Observation;
- Solar Flares;
- Solar X-Rays;
- Sudden Ionospheric Disturbances;
- X Ray Density Measurement;
- Explorer Satellites;
- Far Ultraviolet Radiation;
- Gamma Rays;
- Ionospheric Electron Density;
- Radiant Flux Density;
- Solar Physics