Occultation of a Radio Star by the Solar Corona

Details Occultation of a Radio Star by the Solar Corona Occultation of a Radio Star by the Solar Corona

Aug 1952

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1952natur.170..319m&link_type=abstract

Nature, Volume 170, Issue 4321, pp. 319-320 (1952).

Physics

15

Scientific paper

IT has been suggested1 that the radiation from a radio star might be cut off by refraction in the solar corona, even when the angular separation of the sun and the star is several times the angular radius of the visible disk (Rsolar). The existing data on the coronal electron density have been used for predicting the effective radius of the sun for occultation on various frequencies1. Link2 has calculated the circumstances of the occultation for 1952 and has also shown that the observed intensity of the radiation from the radio star should increase before the actual occultation. Attempts were made to observe these effects in June 1950 and 1951 when the radio star in Taurus (05.01) passed within an angular distance of about 4.5 Rsolar from the sun's centre, but intense sunspot radiation prevented any useful results being obtained.

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