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Benchmarked atomic data for astrophysics

Published online by Cambridge University Press:  12 October 2020

Giulio Del Zanna Open the ORCID record for Giulio Del Zanna [Opens in a new window]
Giulio Del Zanna*
Affiliation:
DAMTP, CMS, University of Cambridge, Wilberforce Road, CambridgeCB3 0WA, UK, email: gd232@cam.ac.uk
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Abstract

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The recent calculations of atomic data for ions of astrophysical interest are reviewed with a focus on work performed in Cambridge. The calculations have been benchmarked against high-resolution laboratory and astrophysical spectra. A framework for assessing uncertainties in atomic data has also been developed. Long-standing discrepancies in predicted spectral line intensities have been resolved, and a significant number of levels in coronal ions have finally been identified, improving the modelling of the extreme-ultraviolet and soft X-ray spectral regions. Recent improvements based on collisional-radiative modelling are presented. They are relevant for the modelling of satellite lines in the X-rays and for solving the long-standing problems in the chromosphere-corona transition in stellar atmospheres.

Keywords

atomic dataatomic processesline: identificationtechniques: spectroscopic
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S350: Laboratory Astrophysics: From Observations to Interpretation , April 2019 , pp. 341 - 344
Copyright
© International Astronomical Union 2020

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