High resolution observations of solar bursts at 3.7 and 11.1 cm wavelengths |
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| Authors: | C E Alissandrakis M R Kundu |
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| Institution: | (1) Astronomy Program, University of Maryland, 20742 College Park, Md., U.S.A.;(2) Laboratory for Solar Physics and Astrophysics, NASA-Goddard Space Flight Center, 20771 Greenbelt, Md., U.S.A.;(3) Astronomy Program, University of Maryland, 20742 College Park, Md., U.S.A. |
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| Abstract: | Four bursts were observed on August 9, 1973 with the NRAO 3-element interferometer at 3.7 and 11.1 cm. By using a simple source model we have calculated the temperature, flux, size and position of the small scale components of the bursts as a function of time. We obtained peak temperatures around 107 K for the components with size of about 10 at 11.1 cm and 3 at 3.7cm. The peak flux of these components lies between 4 and 40 % of the total peak flux of the bursts. Two of the bursts were found to be right circularly polarized. There is evidence that the location of these two bursts does not coincide with the location of the brightest point of the associated active regions. The existence of burst structures with temperatures of the order of 107K indicates that at least part of the radiation in these bursts is generated by a non-thermal mechanism.NAS-NRC Research Associate at Goddard Space Flight Center on Sabbatical Leave from the University of Maryland.
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