Spectroscopic studies of the solar corona at X-ray wavelengths

Details Spectroscopic studies of the solar corona at X-ray wavelengths Spectroscopic studies of the solar corona at X-ray wavelengths

May 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976rspta.281..383a&link_type=abstract

(Royal Society, Discussion on the Physics of the Solar Atmosphere, London, England, Jan. 14, 15, 1975.) Royal Society (London),

Physics

18

Oxygen Spectra, Radiation Distribution, Solar Corona, Solar X-Rays, X Ray Spectra, Forbidden Transitions, Graphs (Charts), Oxygen Ions, Spatial Distribution

Scientific paper

The spatial distribution of emission in several X-ray lines is discussed with emphasis on temperature dependence and association with active regions. Results are presented for the trio of helium-like O VII lines which demonstrate (1) a spatial variation in the density-dependent forbidden-to-intersystem line ratio, and (2) a strong spatial variation in the intensity of the O VII resonance line relative to the optically forbidden transitions. The second effect appears to be caused by resonance scattering by material in the line of sight.

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