Photometric study of chromospheric and coronal spikes observed during the total solar eclipse of 30 June, 1973 |
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| Authors: | S Koutchmy G Stellmacher |
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| Institution: | (1) Sacramento Peak Observatory, AFCRL, 88349 Sunspot, New Mexico, U.S.A.;(2) Institut d'Astrophysique, S.A.S., 75014 Paris, France |
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| Abstract: | A photometric and colorimetric analysis of a color picture of the very inner solar corona, near the South pole region, is performed. Dimensions and average electron densities of both chromospheric and very fine resolved coronal spikes are deduced. For the coronal spike a half width of 1 .67 is measured, the estimate of electron density yields n
e = 1010 cm–3. Some conclusions are attempted on the light of a simultaneously observed spectrum of the same region which appeared to be a  disappearing coronal hole. The observations seem to support the concept of a striated corona.On leave from Institut d'Astrophysique, Paris as NRC Post-Doctoral Research Assistant. |
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