Experimental results from measurements performed during the 12 November 1966 total solar eclipse with a 4.28-cm radio polarimeter

Kaufmann P.; Matsuura O.T.; Dos Santos P.M.

Experimental results from measurements performed during the 12 November 1966 total solar eclipse with a 4.28-cm radio polarimeter

Tipo

Artigo

Data de publicação

1967

Periódico

Icarus

Citações (Scopus)

2

Autores

Kaufmann P.
Matsuura O.T.
Dos Santos P.M.

Resumo

Radio observations of the Sun with a 4.28-cm radio polarimeter were performed during the 12 November 1966 total solar eclipse at a site located near the city of Bagé, in the extreme south of Brazil. The solar activity during that period is discussed, giving additional data for the eclipse measurements themselves. The difference between radio and optical contacts indicated that there is a significant radio emission at a height near 0.12 solar radii over the photosphere, and the basic residual flux due to the contribution of the ring during the totality was found to be 12.2% of the total flux. An important "radio spot" was present near the center of the solar disk, contributing almost alone to the observed basic left-handed circularly polarized component of solar radiation. During totality no important residual polarization was found and if it still existed it is neglectable. © 1967.