Ascending arches in the monochromatic corona at the July 1981 eclipse

Details Ascending arches in the monochromatic corona at the July 1981 eclipse Ascending arches in the monochromatic corona at the July 1981 eclipse

Apr 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984pazh...10..311d&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 10, Apr. 1984, p. 311-314) Soviet Astronomy Letters (ISSN 0360-0327), vol. 10, Mar.-Apr

Physics

1

Coronal Loops, Solar Corona, Solar Eclipses, Solar Physics, Astronomical Photography, Forbidden Bands, Solar Limb

Scientific paper

Projected velocities have been measured for several structures observed from widely spaced stations in monochromatic images of the corona at the west limb during the total eclipse of July 31, 1981. In the 5303 Fe XIV forbidden line, arches and knots in coronal condensations were rising at 10 km/sec; in the 6374 Fe X forbidden line, two arcs were ascending at 11-25 km/sec. Each of these features was visible in only one of the two emission lines and was absent from the white corona, suggesting that the radiation of the moving structures is attributable to an enhancement of temperature rather than of electron density.

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