A further investigation of the Mg xii 8.42 � doublet in a solar flare spectrum

McWhirter, R. W. P.; MacNeice, P. J.

doi:10.1007/bf00152029

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1991

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Cited by 6 publications

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“…Dubau et al (1991) suggest different processes which may cause this anomalous ratio, including suprathermal electrons or huge electric fields. McWhirter & MacNeice (1987) studied 8 solar flare spectra of the Mgxn doublet. They found that the observed intensity ratio was inconsistent with the theoretical value (Ljepojevic et al 1984) and suggest non-negligible opacity as an explanation.…”

Section: Electron Excitation Ratesmentioning

confidence: 99%

Atomic physics calculations relevant to solar flare spectra

1991

Phil. Trans. R. Soc. Lond. A

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Solar flare spectra in the ultraviolet and X-ray wavelength regions are rich in emission lines from highly ionized ions, formed at temperatures around 10 7 K. These lines can be used as valuable diagnostics for probing the physical conditions in solar flares. Such analyses require accurate atomic data for excitation, ionization and recombination processes. In this paper, we present a review of work which has already been carried out, in particular for the Solar Maximum Mission observations, and we look to future requirements for Solar-A .

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Section: Electron Excitation Ratesmentioning

confidence: 99%