Soviet-French joint study of the solar corona. III - The structure and certain dynamic features of the corona of June 30, 1973

Details Soviet-French joint study of the solar corona. III - The structure and certain dynamic features of the corona of June 30, 1973 Soviet-French joint study of the solar corona. III - The structure and certain dynamic features of the corona of June 30, 1973

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981azh....58..810v&link_type=abstract

Astronomicheskii Zhurnal, vol. 58, July-Aug. 1981, p. 810-824. In Russian.

Astronomy and Astrophysics

Astronomy

1

Coronal Holes, International Cooperation, Solar Activity, Solar Corona, Fine Structure, French Space Program, Solar Cycles, Solar Magnetic Field, U.S.S.R. Space Program

Scientific paper

The overall, as well as the detailed and fine, structure of the corona extending to approximately 3.0-4.0 solar radii is studied. The structure is compared with formations on the solar surface, and certain changes in the structure are traced for periods of 80-90 min. The structure of the rays in the outer corona is studied out to 12 solar radii by reproducing computer-enhanced negatives from a short-focus camera. New phenomena are detected, namely, quasi-continuous dynamic disturbances occurring in and near coronal holes (rifts); they appear to be hydromagnetic in the same way as coronal transients. Data are obtained on the fine-filament structure of the corona, on the relationship between this structure and the magnetic fields and current layers, on the spatial arrangement of large helmet-like rays, on the width of the visibility zone, and on the relationship between the overall structure of the corona and the N-S asymmetry of the activity of the 20th cycle.

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