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The spectrum and position of solar noise storms at decameter wavelengths
Authors:Jérôme De La Noë  Tomas E Gergely
Institution:(1) Clark Lake Radio Observatory, Astronomy Program, University of Maryland, 20742 College Park, Md., U.S.A.;(2) Observatoire de Paris, 92190 Meudon, France;(3) Clark Lake Radio Observatory, Astronomy Program, University of Maryland, 20742 College Park, Md., U.S.A.
Abstract:Decametric storm radiation during the period July–August 1970 has been observed simultaneously with a high sensitivity spectrograph at Arecibo Observatory and with the log-periodic, swept-frequency array of the Clark Lake Radio Observatory. The observations complement each other; different types of fine structure emissions can be easily identified on the spectrograph records and their position can be determined from the swept-frequency recordings. We study the relative positions of the different emissions which have been observed during the storms. Four distinct sources appeared to be present. The continuum emission, the type I bursts and the flare-related type III's were all emitted at different locations. The storm type III bursts, type IIIb's and drift pairs overlapped in position, but appeared at different locations than the previously mentioned sources.On leave of absence from Instituto Argentino de Radioastronomia, Argentina.
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