Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994soph..149..289r&link_type=abstract
Solar Physics, vol. 149, no. 2, p. 289-299
Astronomy and Astrophysics
Astronomy
3
Aluminum, Chromosphere, Emission Spectra, Line Spectra, Plasma Density, Plasma Diagnostics, Plasma Temperature, Sodium, Solar Corona, Solar Electrons, Solar Spectra, Stellar Models, Ultraviolet Astronomy, Ultraviolet Spectra, Astronomical Spectroscopy, Atmospheric Models, Collision Parameters, Electron Density (Concentration), Electron Pressure, Extreme Ultraviolet Radiation, Ions, Mathematical Models, Radiative Transfer, Soho Mission, Solar Atmosphere, Solar Cycles, Ultraviolet Spectrometers
Scientific paper
Line intensity ratios of extreme ultraviolet (EUV) emission lines from Na VII and Al IX have been considered for electron density and temperature determinations within the chromosphere-corona transition region and the corona. The electron pressure within the emission region has been assumed to be a constant parameter. Theoretical line intensities for these ions have been computed using a model solar atmosphere and compared with the values as observed by the Apollo Telescope Mount (ATM) ultraviolet spectrometer. The observed intensities correspond to the average quiet-Sun conditions near solar minimum.
Dwivedi Bhola N.
Gupta Asheesh K.
Raju K. P.
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