Application of CHIANTI to High Resolution Solar Spectra

Astronomy and Astrophysics – Astrophysics

Scientific paper

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7509 Corona, 7519 Flares, 7546 Transition Region, 7549 Ultraviolet Emissions, 7554 X-Rays, Gamma Rays, And Neutrinos

Scientific paper

CHIANTI has been developed to support the interpretation of solar and astrophysical spectroscopic measurements. The most recent release, version 5.0 (Landi et al., 2005) presents an improvement over previous versions by including new large scale datasets for Fe ions from Fe XVII to Fe XXIV for X-ray emission and improved atomic data for EUV line emission. We will show examples of its use in the analysis of X-ray spectra from SMM, ultraviolet spectra from SOHO and the interpretation of broadband instruments such as EIT and TRACE. Current work involves the analysis of ionization and recombination rates based on recent laboratory measurements and calculations with the Flexible Atomic Code. The incorporation of ionization and recombination rates into CHIANTI will allow us to explore such effects as the effect of finite densities on ionization balance and transient and nonthermal ionization populations.

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