Radio observations of total solar eclipse of November 3, 1994 at Chapecó (Brzil)

Details Radio observations of total solar eclipse of November 3, 1994 at Chapecó (Brzil) Radio observations of total solar eclipse of November 3, 1994 at Chapecó (Brzil)

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997adspr..20.2359s&link_type=abstract

Advances in Space Research, Volume 20, Issue 12, p. 2359-2363.

Physics

1

Scientific paper

Radio observations of the eclipse on November 3, 1994, were carried out at Chapecó, Brazil by using a decimetric spectrograph having high spectral and time resolution. The light curve shows that: (1) Time variation of the radio flux before the totality was more compared to that after. (2) During the totality radio emission at 1.5 GHz was observed. Advantage of high spatial resolution (~ 3.2 arc sec) possible during solar eclipse enabled us to determine the height of radio emission at 1.5 GHz. (3) Microwave bursts were observed associated with metric Type III-RS bursts. The source size of one of the microwave bursts was ~ 7 arc sec and its physical parameters have been estimated. (4) The time difference between radio and optical contacts suggested for the first time asymmetrical limb brightening at 1.5 GHz.

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