Accession Number : AD0432274


Title :   ON THE RADIO AND X-RAY EMISSION OF SOLAR FLARES,


Corporate Author : SACRAMENTO PEAK OBSERVATORY SUNSPOT N MEX


Personal Author(s) : Pankratov,A K ; Dunn,Alice B


Report Date : Jan 1963


Pagination or Media Count : 1


Abstract : The connection between X-ray emission and the emission in Ha of flares is studied statistically. Six intense chromospheric flares (importance 3 and 3+) which were not accompanied by X-ray emission were detected and also eight doubled flares which generated X-ray emission only in one knot or maximum. The absence of a directivity effect in the X-ray emission of flares is established. It is found that all type IV bursts of radio emission are accompanied by an appreciable flow of X-ray emission, sufficient for the appearance of a well noticeable (according to f/min) additional ionization of the D layer. The possibility of a unique relation between the presence of X-ray emission of solar flares and type IV bursts of radio emission is discussed briefly. It is proved that several intense ionospheric effects (in the D layer) are due to the X-ray emission from behind-the-limb flares, which are seen from the earth as subflares or not at all. An identical result was obtained in (11) and (12). This fact is apparently evidence that the region of generation of X-ray emission is not limited by the region of flare emission in Ha but extends to heights of several tens of thousands of kilometers into the region of coronal condensations. (Author)


Descriptors :   *RADIO WAVES , SOLAR FLARES , SOLAR DISTURBANCES , STATISTICAL ANALYSIS , ABSORPTION , IONOSPHERIC DISTURBANCES , COSMIC RAYS


Distribution Statement : APPROVED FOR PUBLIC RELEASE