Journal
ASTRONOMISCHE NACHRICHTEN
Volume 330, Issue 7, Pages 691-697Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asna.200911226
Keywords
Sun: activity; Sun: radio radiation; space vehicles; telescopes
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Funding
- Paris-Meudon Observatory
- University of Minnesota
- Goddard Space Flight Center
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Decameter wavelength radio emission is finely structured in solar bursts. For their research it is very important to use a sufficient sensitivity of antenna systems. In this paper we study an influence of the radiotelescope-antenna effective area on the results of decameter solar radio observations. For this purpose we compared the solar bursts received by the array of 720 ground-based dipoles and the single dipole of the radiotelescope UTR-2. It is shown that a larger effective area of the ground-based antenna allows us to measure a weaker solar emission and to distinguish a fine structure of strong solar events. This feature has been also verified by simultaneous ground- and space-based observations in the overlapping frequency range. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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