[en] Abstract: 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. Graphical abstract: [Figure not available: see fulltext.].
Research center :
AGIF - Algèbre, Géométrie et Interactions fondamentales
Disciplines :
Physics
Author, co-author :
Deprince, Jerome ; Université de Mons - UMONS > Faculté des Sciences > Service de Physique atomique et astrophysique ; Université de Mons - UMONS ; Institut d’Astronomie et d’Astrophysique, Université Libre de Bruxelles, Brussels, Belgium
Carvajal Gallego, Helena ; Université de Mons - UMONS > Faculté des Sciences > Service de Physique atomique et astrophysique
Godefroid, Michel; SQUARES, Université Libre de Bruxelles, Brussels, Belgium
Goriely, Stéphane; Institut d’Astronomie et d’Astrophysique, Université Libre de Bruxelles, Brussels, Belgium
Fonds De La Recherche Scientifique - FNRS Fonds pour la Formation à la Recherche dans ı’Industrie et dans ı’Agriculture
Funding text :
The present work is supported by the FWO and F.R.S.-FNRS under the Excellence of Science (EOS) programme (numbers O.0004.22 and O022818F). HCG is a holder of a FRIA fellowship. SG and PP are Research Associate of the Belgian Fund for Scientific Research F.R.S.-FNRS. PQ is F.R.S.-FNRS Research Director. Computational resources have been provided by the Consortium des Equipements de Calcul Intensif (CECI), funded by the F.R.S. -FNRS under Grant No. 2.5020.11 and by the Walloon Region of Belgium.The present work is supported by the FWO and F.R.S.-FNRS under the Excellence of Science (EOS) programme (numbers O.0004.22 and O022818F). HCG is a holder of a FRIA fellowship. SG and PP are Research Associate of the Belgian Fund for Scientific Research F.R.S.-FNRS. PQ is F.R.S.-FNRS Research Director. Computational resources have been provided by the Consortium des Equipements de Calcul Intensif (CECI), funded by the F.R.S. -FNRS under Grant No. 2.5020.11 and by the Walloon Region of Belgium.
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