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Determination of the decameter wavelength spectrum of the quiet sunThe Teepee Tee array of the Clark Lake Radio Observatory has been used to compare the flux of the Sun with that of the sidereal sources Tau A and Vir A at several frequencies in the range 109.0-19.0 MHz. Only the two central banks of the E-W arm of the array were used as elements of a phase switched interferometer so that the Sun could be observed as a point source and compared directly to the sidereal sources. The Sun was still partially resolved however, and appropriate corrections for this effect were made. The observations were taken at times when the Sun and either Tau A or Vir A were at the same declination. We have therefore been able to derive the values for the solar flux, without having to resort to a gain vs zenith distance correction. The observations, combined with those available in the literature, allow us to derive an accurate meter and decameter wavelength spectrum of the quiet Sun.
Document ID
19780030653
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Erickson, W. C.
(NASA Goddard Space Flight Center Greenbelt; Clark Lake Radio Observatory, College Park, Md., United States)
Kundu, M. R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Mahoney, M. J.
(Clark Lake Radio Observatory College Park, Md., United States)
Gergely, T. E.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 9, 2013
Publication Date
September 1, 1977
Publication Information
Publication: Solar Physics
Volume: 54
Subject Category
Solar Physics
Accession Number
78A14562
Funding Number(s)
CONTRACT_GRANT: NSF AST-70-01638-A09
CONTRACT_GRANT: NGR-21-002-199
CONTRACT_GRANT: NGL-21-002-033
Distribution Limits
Public
Copyright
Other

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