https://doi.org/10.1140/epjd/s10053-023-00671-z
Regular Article – Atomic Physics
On the sensitivity of uranium opacity with respect to the atomic properties in the context of kilonova emission modeling
1
Institut d’Astronomie et d’Astrophysique, Université Libre de Bruxelles, 1050, Brussels, Belgium
2
Physique Atomique et Astrophysique, Université de Mons, 7000, Mons, Belgium
3
SQUARES, Université Libre de Bruxelles, 1050, Brussels, Belgium
4
IPNAS, Université de Liège, Sart Tilman, 4000, Liège, Belgium
Received:
24
March
2023
Accepted:
10
May
2023
Published online:
5
June
2023
In this study, the sensitivity of the opacities with respect to the atomic parameters is investigated in the case of weakly charged uranium ions. In order to do this, atomic data for U II and U III were calculated with the pseudo-relativistic Hartree–Fock method (HFR) and then, used to determine the expansion opacities for conditions characterizing the ejecta of kilonovae that follow neutron star mergers. In particular, we studied the sensitivity of the opacity with respect to the use of atomic data obtained considering several effects as the ionic core polarization and an adjustment procedure.
Helena Carvajal Gallego, Michel Godefroid, St’ephane Goriely, Patrick Palmeri, and Pascal Quinet these authors contributed equally to this work.
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© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
