Effects of neutrino mixing upon electron fraction in core collapse supernovae
- Autores
- Sáez, María Manuela; Mosquera, Mercedes Elisa; Civitarese, Enrique Osvaldo
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The inclusion of massive neutrinos affects the cross sections involved in the formation of heavy nuclei, modifying their abundances.Rapid neutron capture processes (r-process) are often associated with explosive events such as core-collapse supernovae. In this work we study the effects of active and sterile neutrino oscillations and interactions, upon the calculation of neutrino fluxes, the baryonic density and the electron fraction of the material. We have considered two different initial distribution functions of the neutrinos and different combinations of mixing parameters (including θ34 ≠ 0). We use the formalism of density matrices for the calculations and included the effects of neutrino oscillations, interactions with matter and self-neutrino interactions. We found that the interactions of the neutrinos with matter and with themselves change the electron fraction, affecting the onset of the r-process.
Facultad de Ciencias Astronómicas y Geofísicas
Facultad de Ciencias Exactas - Materia
-
Astronomía
Física
Astroparticle physics
Neutrinos
Nuclear reactions
Nucleosynthesis
Abundances - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/102770
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Effects of neutrino mixing upon electron fraction in core collapse supernovaeSáez, María ManuelaMosquera, Mercedes ElisaCivitarese, Enrique OsvaldoAstronomíaFísicaAstroparticle physicsNeutrinosNuclear reactionsNucleosynthesisAbundancesThe inclusion of massive neutrinos affects the cross sections involved in the formation of heavy nuclei, modifying their abundances.Rapid neutron capture processes (r-process) are often associated with explosive events such as core-collapse supernovae. In this work we study the effects of active and sterile neutrino oscillations and interactions, upon the calculation of neutrino fluxes, the baryonic density and the electron fraction of the material. We have considered two different initial distribution functions of the neutrinos and different combinations of mixing parameters (including θ<sub>34</sub> ≠ 0). We use the formalism of density matrices for the calculations and included the effects of neutrino oscillations, interactions with matter and self-neutrino interactions. We found that the interactions of the neutrinos with matter and with themselves change the electron fraction, affecting the onset of the r-process.Facultad de Ciencias Astronómicas y GeofísicasFacultad de Ciencias Exactas2017-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf11-13http://sedici.unlp.edu.ar/handle/10915/102770enginfo:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/86312info:eu-repo/semantics/altIdentifier/url/http://www.astronomiaargentina.org.ar/uploads/docs/baaa_60.pdfinfo:eu-repo/semantics/altIdentifier/issn/1669-9521info:eu-repo/semantics/altIdentifier/hdl/11336/86312info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:20:30Zoai:sedici.unlp.edu.ar:10915/102770Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:20:31.276SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Effects of neutrino mixing upon electron fraction in core collapse supernovae |
| title |
Effects of neutrino mixing upon electron fraction in core collapse supernovae |
| spellingShingle |
Effects of neutrino mixing upon electron fraction in core collapse supernovae Sáez, María Manuela Astronomía Física Astroparticle physics Neutrinos Nuclear reactions Nucleosynthesis Abundances |
| title_short |
Effects of neutrino mixing upon electron fraction in core collapse supernovae |
| title_full |
Effects of neutrino mixing upon electron fraction in core collapse supernovae |
| title_fullStr |
Effects of neutrino mixing upon electron fraction in core collapse supernovae |
| title_full_unstemmed |
Effects of neutrino mixing upon electron fraction in core collapse supernovae |
| title_sort |
Effects of neutrino mixing upon electron fraction in core collapse supernovae |
| dc.creator.none.fl_str_mv |
Sáez, María Manuela Mosquera, Mercedes Elisa Civitarese, Enrique Osvaldo |
| author |
Sáez, María Manuela |
| author_facet |
Sáez, María Manuela Mosquera, Mercedes Elisa Civitarese, Enrique Osvaldo |
| author_role |
author |
| author2 |
Mosquera, Mercedes Elisa Civitarese, Enrique Osvaldo |
| author2_role |
author author |
| dc.subject.none.fl_str_mv |
Astronomía Física Astroparticle physics Neutrinos Nuclear reactions Nucleosynthesis Abundances |
| topic |
Astronomía Física Astroparticle physics Neutrinos Nuclear reactions Nucleosynthesis Abundances |
| dc.description.none.fl_txt_mv |
The inclusion of massive neutrinos affects the cross sections involved in the formation of heavy nuclei, modifying their abundances.Rapid neutron capture processes (r-process) are often associated with explosive events such as core-collapse supernovae. In this work we study the effects of active and sterile neutrino oscillations and interactions, upon the calculation of neutrino fluxes, the baryonic density and the electron fraction of the material. We have considered two different initial distribution functions of the neutrinos and different combinations of mixing parameters (including θ<sub>34</sub> ≠ 0). We use the formalism of density matrices for the calculations and included the effects of neutrino oscillations, interactions with matter and self-neutrino interactions. We found that the interactions of the neutrinos with matter and with themselves change the electron fraction, affecting the onset of the r-process. Facultad de Ciencias Astronómicas y Geofísicas Facultad de Ciencias Exactas |
| description |
The inclusion of massive neutrinos affects the cross sections involved in the formation of heavy nuclei, modifying their abundances.Rapid neutron capture processes (r-process) are often associated with explosive events such as core-collapse supernovae. In this work we study the effects of active and sterile neutrino oscillations and interactions, upon the calculation of neutrino fluxes, the baryonic density and the electron fraction of the material. We have considered two different initial distribution functions of the neutrinos and different combinations of mixing parameters (including θ<sub>34</sub> ≠ 0). We use the formalism of density matrices for the calculations and included the effects of neutrino oscillations, interactions with matter and self-neutrino interactions. We found that the interactions of the neutrinos with matter and with themselves change the electron fraction, affecting the onset of the r-process. |
| publishDate |
2017 |
| dc.date.none.fl_str_mv |
2017-09 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/102770 |
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eng |
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eng |
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