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Solar radio astronomy at low frequenciesThe characteristics of solar radio emissions at decametric to kilometric wavelengths are reviewed. Special attention is given to the radiation of the quiet sun at several metric and decametric wavelengths and to nonthermal radiation from the active sun, including radio bursts of type III (electron beams), type-III bursts from behind the sun, storms of type III bursts, the flare-associated radio bursts, type II bursts (shock waves), and shock-associated bursts. It is pointed out that almost no observations have been made so far of solar radiation between about 20 MHz and about 2 MHz. Below about 2 MHz, dynamic spectra of flux densities of solar burst have been recorded in space and observations were made of the directions of centroids and characteristic sizes of the emitting sources.
Document ID
19910072414
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Dulk, George A.
(Colorado, University Boulder, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Subject Category
Solar Physics
Meeting Information
Meeting: International Workshop on Low Frequency Astrophysics from Space
Location: Crystal City, VA
Country: United States
Start Date: January 8, 1990
End Date: January 9, 1990
Accession Number
91A57037
Funding Number(s)
CONTRACT_GRANT: NSG-7287
CONTRACT_GRANT: NAGW-91
CONTRACT_GRANT: NSF ATM-87-19371
Distribution Limits
Public
Copyright
Other

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