{"title":"Multiconfiguration Dirac–Hartree–Fock radiative parameters for emission lines in Ce ii–ivions and cerium opacity calculations for kilonovae","authors":"H. Carvajal Gallego, P. Palmeri, P. Quinet","doi":"10.1093/mnras/staa3729","DOIUrl":null,"url":null,"abstract":"Large-scale calculations of atomic structures and radiative properties have been carried out for singly, doubly- and trebly ionized cerium. For this purpose, the purely relativistic multiconfiguration Dirac-Hartree-Fock (MCDHF) method was used, taking into account the effects of valence-valence and core-valence electronic correlations in detail. The results obtained were then used to calculate the expansion opacities characterizing the kilonovae observed as a result of neutron star mergers. Comparisons with previously published experimental and theoretical studies have shown that the results presented in this work are the most complete currently available, in terms of quantity and quality, concerning the atomic data and monochromatic opacities for Ce II, Ce III and Ce IV ions.","PeriodicalId":8441,"journal":{"name":"arXiv: Atomic Physics","volume":"14 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2020-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv: Atomic Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1093/mnras/staa3729","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
Large-scale calculations of atomic structures and radiative properties have been carried out for singly, doubly- and trebly ionized cerium. For this purpose, the purely relativistic multiconfiguration Dirac-Hartree-Fock (MCDHF) method was used, taking into account the effects of valence-valence and core-valence electronic correlations in detail. The results obtained were then used to calculate the expansion opacities characterizing the kilonovae observed as a result of neutron star mergers. Comparisons with previously published experimental and theoretical studies have shown that the results presented in this work are the most complete currently available, in terms of quantity and quality, concerning the atomic data and monochromatic opacities for Ce II, Ce III and Ce IV ions.
对单电离、双电离和三电离的铈进行了大规模的原子结构和辐射特性计算。为此，我们采用了纯相对论多组态Dirac-Hartree-Fock (MCDHF)方法，详细考虑了价电子-价电子和核心-价电子相关的影响。得到的结果随后被用来计算中子星合并后观测到的千新星的膨胀不透明度。与先前发表的实验和理论研究的比较表明，在数量和质量方面，本工作中提出的结果是目前可用的最完整的，涉及Ce II, Ce III和Ce IV离子的原子数据和单色不透明度。
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