Confronting atomic data with Fe L-shell spectra of stellar coronae
Abstract
It is common to suggest the uncertainties in the atomic data for explaining difficulties that arise in interpreting astrophysical x-ray spectra. The atomic data for the Fe L-shell ions have, over the years, been considered particularly suspect. In this paper, we confront Fe-L spectra calculated using the HULLAC atomic code assuming coronal conditions with recent observations of the stellar coronae of Capella and HR 1099, obtained with the high-resolution grating spectrometers on board Chandra and XMM-Newton. We find very good agreement, which indicates that Fe-L transition rates calculated with state-of-the-art codes, can generally be trusted in the analysis of x-ray spectra.
Cite
@article{arxiv.astro-ph/0106448,
title = {Confronting atomic data with Fe L-shell spectra of stellar coronae},
author = {E. Behar and J. Cottam and J. R. Peterson and M. Sako and S. M. Kahn and A. Bar-Shalom and M. Klapisch and A. C. Brinkman},
journal= {arXiv preprint arXiv:astro-ph/0106448},
year = {2007}
}
Comments
Submitted for the proceedings of "X-ray astronomy 2000",(Palermo Sep. 2000), Eds. R. Giacconi, L. Stella, S. Serio, ASP Conf. Series