Silva, Ricardo F. ; Sampaio, Jorge M. ; Amaro, Pedro ; Flörs, Andreas ; Martínez-Pinedo, Gabriel ; Marques, José P. (2022)
Structure Calculations in Nd III and U III Relevant for Kilonovae Modelling.
In: Atoms, 10 (1)
doi: 10.3390/atoms10010018
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
The detection of gravitational waves and electromagnetic signals from the neutron star merger GW170817 has provided evidence that these astrophysical events are sites where the r-process nucleosynthesis operates. The electromagnetic signal, commonly known as kilonova, is powered by the radioactive decay of freshly synthesized nuclei. However, its luminosity, colour and spectra depend on the atomic opacities of the produced elements. In particular, opacities of lanthanides and actinides elements, due to their large density of bound–bound transitions, are fundamental. The current work focuses on atomic structure calculations for lanthanide and actinide ions, which are important in kilonovae modelling of ejecta spectra. Calculations for Nd III and U III, two representative rare-earth ions, were achieved. Our aim is to provide valuable insights for future opacity calculations for all heavy elements. We noticed that the opacity of U III is about an order of magnitude greater than the opacity of Nd III due to a higher density of levels in the case of the actinide.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Silva, Ricardo F. ; Sampaio, Jorge M. ; Amaro, Pedro ; Flörs, Andreas ; Martínez-Pinedo, Gabriel ; Marques, José P. |
| Art des Eintrags: | Bibliographie |
| Titel: | Structure Calculations in Nd III and U III Relevant for Kilonovae Modelling |
| Sprache: | Englisch |
| Publikationsjahr: | 2022 |
| Verlag: | MDPI |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Atoms |
| Jahrgang/Volume einer Zeitschrift: | 10 |
| (Heft-)Nummer: | 1 |
| Kollation: | 10 Seiten |
| DOI: | 10.3390/atoms10010018 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | The detection of gravitational waves and electromagnetic signals from the neutron star merger GW170817 has provided evidence that these astrophysical events are sites where the r-process nucleosynthesis operates. The electromagnetic signal, commonly known as kilonova, is powered by the radioactive decay of freshly synthesized nuclei. However, its luminosity, colour and spectra depend on the atomic opacities of the produced elements. In particular, opacities of lanthanides and actinides elements, due to their large density of bound–bound transitions, are fundamental. The current work focuses on atomic structure calculations for lanthanide and actinide ions, which are important in kilonovae modelling of ejecta spectra. Calculations for Nd III and U III, two representative rare-earth ions, were achieved. Our aim is to provide valuable insights for future opacity calculations for all heavy elements. We noticed that the opacity of U III is about an order of magnitude greater than the opacity of Nd III due to a higher density of levels in the case of the actinide. |
| Freie Schlagworte: | opacity, atomic data, kilonovae, oscillator strengths, neutron stars |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Kernphysik 05 Fachbereich Physik > Institut für Kernphysik > Theoretische Kernphysik |
| Hinterlegungsdatum: | 02 Aug 2024 12:39 |
| Letzte Änderung: | 02 Aug 2024 12:39 |
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| Suche nach Titel in: | TUfind oder in Google |
Verfügbare Versionen dieses Eintrags
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Structure Calculations in Nd III and U III Relevant for Kilonovae Modelling. (deposited 11 Apr 2022 11:13)
- Structure Calculations in Nd III and U III Relevant for Kilonovae Modelling. (deposited 02 Aug 2024 12:39) [Gegenwärtig angezeigt]
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