J. Lang

TL;DR: In this paper, the authors investigated the validity and limitations of the differential emission measure (DEM) method used for analysing solar EUV spectra, and showed that a spurious multiple peak in the DEM distribution between and 6.7, where is the electron temperature, may derive from an inaccurate treatment of the population densities of the excited levels and ionisation fractions or from using an integral inversion technique with arbitrary smoothing.

TL;DR: In this article, a constrained maximum likelihood spectral line fitting code was used to analyse the spectral features of the extreme ultraviolet quiet Sun spectrum, observed at normal incidence by the Coronal Diagnostic Spectrometer on the SOHO spacecraft.

TL;DR: In this paper, the authors carried out quantal calculations for the dielectronic recombination of C 3+ in an electric field and used these results in a collisional-radiative model for a carbon seeded hydrogen plasma.

TL;DR: In this paper, the authors discussed X-ray spectra and soft images of an M1.9 flare that occurred on 1992 January 5 near 13.3 UT, and calculated the electron temperature and emission measure of the flare as a function of time during the early rise phase using X-rays spectral line intensities and line ratios using spectral line widths, line profile asymmetries, and wavelength shifts due to the Doppler effect.