The coronal disturbance (W 90 deg, N 25 deg) in the eclipse spectra of July 31, 1981

Details The coronal disturbance (W 90 deg, N 25 deg) in the eclipse spectra of July 31, 1981 The coronal disturbance (W 90 deg, N 25 deg) in the eclipse spectra of July 31, 1981

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984soph...91..141n&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 91, March 1984, p. 141-157.

Physics

4

Solar Corona, Solar Eclipses, Solar Prominences, Solar Spectra, Abundance, Electron Density (Concentration), Radial Velocity, Solar Temperature, Spectral Line Width

Scientific paper

The physical properties of the coronal disturbance (CD) (W 90 deg, N 25 deg) of July 31, 1981 are investigated. On the basis of temperature intensities and profiles of the Ca XV (5964 A) and the Ni XV (6702 A) lines measured in the eclipse of the coronal spectra, two discrete regions of the CD are identified, both with different temperatures. In the Ca XV region, temperature was measured at 3.8 x 10 to the 6th K, and in the Ni XV region, at 2.3 x 10 to the 6th K. The average height of the CD was 0.08 solar radii. Measurements of spectrograph slit length, total line-of-sight length and the nonthermal velocities for the two regions are provided in the form of graphic representations of the spectrograph profiles.

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