Abstract
view Abstract Citations (3) References (7) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Brightness Distribution of the Sun at 1.45 Meters. Firor, John Abstract By using a variable-spacing interferometer receiving 1.45-m wave-length radiation, the quiet sun h s been analyzed with the interferometer fringes both parallel and perpendicular to the solar axis. The antenna spacing was varied in small steps up to about 175 wave lengths, and some measurements were made at up to 340 wave lengths. Phase measurements were made by calibrating the interferometer lobe positions on the strong radio sources in Cygnus and Taurus. The brightness distribution derived from these measurements necessarily contains uncertainties arising from the fact that the interferometer trace was not zero for the longest spacings used. However, two main features seem certain: (1) the sun at this wave length has a bright limb, similar to that predicted theoretically, both at the equator and at the pole; and (2) the equatorial dimension of the sun is larger than the polar dimension. Publication: The Astrophysical Journal Pub Date: March 1956 DOI: 10.1086/146164 Bibcode: 1956ApJ...123..320F full text sources ADS |
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