A Discussion on the physics of the solar atmosphere - Spectroscopic studies of the solar corona at x-ray wavelengths
1976 ◽
Vol 281
(1304)
◽
pp. 383-390
◽
Keyword(s):
X Ray
◽
The spatial distribution of the emission in several X-ray lines is discussed with emphasis on temperature dependence and association with active regions. New 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.
2000 ◽
Vol 179
◽
pp. 213-220
Keyword(s):
1994 ◽
Vol 144
◽
pp. 431-434
Keyword(s):
1994 ◽
Vol 144
◽
pp. 21-28
◽
Keyword(s):