An asteroseismic constraint on the mass of the axion from the period drift of the pulsating DA white dwarf star L19-2
- Autores
- Córsico, Alejandro Hugo; Romero, Alejandra Daniela; Althaus, Leandro Gabriel; García Berro, Enrique; Isern, Jordi; Kepler, S. O.; Miller Bertolami, Marcelo Miguel; Sullivan, Denis J.; Chote, Paul
- Año de publicación
- 2016
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We employ an asteroseismic model of L19-2, a relatively massive M? ∼ 0.75M and hot (Teff ∼ 12 100 K) pulsating DA (H-rich atmosphere) white dwarf star (DAV or ZZ Ceti variable), and use the observed values of the temporal rates of period change of its dominant pulsation modes (Π ∼ 113 s and Π ∼ 192 s), to derive a new constraint on the mass of the axion, the hypothetical non-barionic particle considered as a possible component of the dark matter of the Universe. If the asteroseismic model employed is an accurate representation of L19-2, then our results indicate hints of extra cooling in this star, compatible with emission of axions of mass ma cos2 β . 25 meV or an axion-electron coupling constant of gae . 7×10−13
Instituto de Astrofísica de La Plata
Facultad de Ciencias Astronómicas y Geofísicas - Materia
-
Astronomía
Axions
Stars
White dwarfs
Brown dwarfs - 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:10915/93643
Ver los metadatos del registro completo
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An asteroseismic constraint on the mass of the axion from the period drift of the pulsating DA white dwarf star L19-2Córsico, Alejandro HugoRomero, Alejandra DanielaAlthaus, Leandro GabrielGarcía Berro, EnriqueIsern, JordiKepler, S. O.Miller Bertolami, Marcelo MiguelSullivan, Denis J.Chote, PaulAstronomíaAxionsStarsWhite dwarfsBrown dwarfsWe employ an asteroseismic model of L19-2, a relatively massive M? ∼ 0.75M and hot (Teff ∼ 12 100 K) pulsating DA (H-rich atmosphere) white dwarf star (DAV or ZZ Ceti variable), and use the observed values of the temporal rates of period change of its dominant pulsation modes (Π ∼ 113 s and Π ∼ 192 s), to derive a new constraint on the mass of the axion, the hypothetical non-barionic particle considered as a possible component of the dark matter of the Universe. If the asteroseismic model employed is an accurate representation of L19-2, then our results indicate hints of extra cooling in this star, compatible with emission of axions of mass ma cos2 β . 25 meV or an axion-electron coupling constant of gae . 7×10−13Instituto de Astrofísica de La PlataFacultad de Ciencias Astronómicas y Geofísicas2016-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/93643enginfo:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/1475-7516/2016/07/036/metainfo:eu-repo/semantics/altIdentifier/issn/1475-7516info:eu-repo/semantics/altIdentifier/doi/10.1088/1475-7516/2016/07/036info:eu-repo/semantics/altIdentifier/hdl/11336/36713info: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:UNLP2025-09-29T11:19:22Zoai:sedici.unlp.edu.ar:10915/93643Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:19:23.216SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
An asteroseismic constraint on the mass of the axion from the period drift of the pulsating DA white dwarf star L19-2 |
| title |
An asteroseismic constraint on the mass of the axion from the period drift of the pulsating DA white dwarf star L19-2 |
| spellingShingle |
An asteroseismic constraint on the mass of the axion from the period drift of the pulsating DA white dwarf star L19-2 Córsico, Alejandro Hugo Astronomía Axions Stars White dwarfs Brown dwarfs |
| title_short |
An asteroseismic constraint on the mass of the axion from the period drift of the pulsating DA white dwarf star L19-2 |
| title_full |
An asteroseismic constraint on the mass of the axion from the period drift of the pulsating DA white dwarf star L19-2 |
| title_fullStr |
An asteroseismic constraint on the mass of the axion from the period drift of the pulsating DA white dwarf star L19-2 |
| title_full_unstemmed |
An asteroseismic constraint on the mass of the axion from the period drift of the pulsating DA white dwarf star L19-2 |
| title_sort |
An asteroseismic constraint on the mass of the axion from the period drift of the pulsating DA white dwarf star L19-2 |
| dc.creator.none.fl_str_mv |
Córsico, Alejandro Hugo Romero, Alejandra Daniela Althaus, Leandro Gabriel García Berro, Enrique Isern, Jordi Kepler, S. O. Miller Bertolami, Marcelo Miguel Sullivan, Denis J. Chote, Paul |
| author |
Córsico, Alejandro Hugo |
| author_facet |
Córsico, Alejandro Hugo Romero, Alejandra Daniela Althaus, Leandro Gabriel García Berro, Enrique Isern, Jordi Kepler, S. O. Miller Bertolami, Marcelo Miguel Sullivan, Denis J. Chote, Paul |
| author_role |
author |
| author2 |
Romero, Alejandra Daniela Althaus, Leandro Gabriel García Berro, Enrique Isern, Jordi Kepler, S. O. Miller Bertolami, Marcelo Miguel Sullivan, Denis J. Chote, Paul |
| author2_role |
author author author author author author author author |
| dc.subject.none.fl_str_mv |
Astronomía Axions Stars White dwarfs Brown dwarfs |
| topic |
Astronomía Axions Stars White dwarfs Brown dwarfs |
| dc.description.none.fl_txt_mv |
We employ an asteroseismic model of L19-2, a relatively massive M? ∼ 0.75M and hot (Teff ∼ 12 100 K) pulsating DA (H-rich atmosphere) white dwarf star (DAV or ZZ Ceti variable), and use the observed values of the temporal rates of period change of its dominant pulsation modes (Π ∼ 113 s and Π ∼ 192 s), to derive a new constraint on the mass of the axion, the hypothetical non-barionic particle considered as a possible component of the dark matter of the Universe. If the asteroseismic model employed is an accurate representation of L19-2, then our results indicate hints of extra cooling in this star, compatible with emission of axions of mass ma cos2 β . 25 meV or an axion-electron coupling constant of gae . 7×10−13 Instituto de Astrofísica de La Plata Facultad de Ciencias Astronómicas y Geofísicas |
| description |
We employ an asteroseismic model of L19-2, a relatively massive M? ∼ 0.75M and hot (Teff ∼ 12 100 K) pulsating DA (H-rich atmosphere) white dwarf star (DAV or ZZ Ceti variable), and use the observed values of the temporal rates of period change of its dominant pulsation modes (Π ∼ 113 s and Π ∼ 192 s), to derive a new constraint on the mass of the axion, the hypothetical non-barionic particle considered as a possible component of the dark matter of the Universe. If the asteroseismic model employed is an accurate representation of L19-2, then our results indicate hints of extra cooling in this star, compatible with emission of axions of mass ma cos2 β . 25 meV or an axion-electron coupling constant of gae . 7×10−13 |
| publishDate |
2016 |
| dc.date.none.fl_str_mv |
2016-07 |
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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/10915/93643 |
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eng |
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eng |
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openAccess |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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