Radio observations of compact solar sources located between sunspots |
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| Authors: | R A Sych A M Uralov A N Korzhavin |
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| Institution: | (1) Institute of Solar-Terrestrial Physics, Siberian Division of the Russian Academy of Sciences, P.O. Box 4026, 664033 Irkutsk 33, Russia;(2) Special Astrophysical Observatory of the Russian Academy of Sciences, 196140 St. Petersburg, Pulkovo, Russia |
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| Abstract: | Data from SSRT form the basis for initiating a study of the properties of long-lived, compact microwave sources located outside sunspots. A step-like birth of such a source was detected and is described in this study. This sheds light on the relationship between the  step-like phenomenon detected with SSRT and the peculiar source phenomenon observed at RATAN-600. Peculiar sources precede large flares and are projected onto the photospheric neutral line. It seems likely that the build-up of a large flare is also step-like in character. We also discuss a source overlying the neutral line which accompanied a large active region that did not produce any large flare. |
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