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Analysis of EUV Observations of a Coronal Active Region Made During the 7 March 1970 Eclipse

Published online by Cambridge University Press:  25 May 2016

A. H. Gabriel  and
C. Jordan
A. H. Gabriel
Affiliation:
SRC Astrophysics Research Division of the Appleton Laboratory, Culham Laboratory, Abingdon, Berkshire, England
C. Jordan
Affiliation:
SRC Astrophysics Research Division of the Appleton Laboratory, Culham Laboratory, Abingdon, Berkshire, England

Abstract

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(Monthly Notices Roy. Astron. Soc.). Rocket observations of the EUV solar spectrum obtained during the total eclipse of 7 March 1970 showed the presence of a large coronal condensation on the NE limb (Gabriel et al., 1971). The condensation shows the existence of loop structure, which defines the local magnetic fields, and is apparent in forbidden lines including those of Si viii, Si ix, S xi, Fe ix, Fe xi and Fe xii which lie between 1200 Å and 2050 Å (Jordan, 1971). These lines are formed in the temperature range 9.3 × 105K to 2.0 × 106K. The photographic observations of the active region show clearly that the spatial distribution of material varies considerably with its temperature.

Type
Part I Magnetic Structure Responsible for Coronal Disturbances
Information
Symposium - International Astronomical Union , Volume 57: Coronal Disturbances , 1974 , pp. 93 - 95
Copyright
Copyright © Reidel 1974 

References

Gabriel, A. H., Garton, W. R. S., Goldberg, L., Jones, T. J. L., Jordan, C., Morgan, F. J., Nicholls, R. W., Parkinson, W. H., Paxton, H. J. B., Reeves, E. M., Shenton, D. B., Speer, R. J., and Wilson, R.: 1971, Astrophys. J. 169, 595.Google Scholar
Jordan, C.: 1971, Solar Phys. 21, 381.Google Scholar