The rate of cooling of the pulsating white dwarf star G117-B15A: A new asteroseismological inference of the axion mass
- Autores
- Córsico, Alejandro Hugo; Althaus, Leandro Gabriel; Miller Bertolami, Marcelo Miguel; Romero, Alejandra Daniela; García-Berro, E.; Isern, J.; Kepler, S. O.
- Año de publicación
- 2012
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We employ a state-of-the-art asteroseismological model of G117-B15A, the archetype of the H-rich atmosphere (DA) white dwarf pulsators (also known as DAV or ZZ Ceti variables), and use the most recently measured value of the rate of period change for the dominant mode of this pulsating star to derive a new constraint on the mass of axion, the still conjectural non-baryonic particle considered as a candidate for dark matter of the Universe. Assuming that G117-B15A is truly represented by our asteroseismological model, and, in particular, that the period of the dominant mode is associated with a pulsation g mode trapped in the H envelope, we find strong indications of the existence of extra cooling in this star, compatible with emission of axions of mass macos2β=17.4-2.7+2.3 meV.
Facultad de Ciencias Astronómicas y Geofísicas - Materia
-
Ciencias Astronómicas
Asteroseismology
Elementary particles
Stars: individual: ZZ Ceti stars
Stars: interiors
Stars: oscillations
White 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:10915/84570
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The rate of cooling of the pulsating white dwarf star G117-B15A: A new asteroseismological inference of the axion massCórsico, Alejandro HugoAlthaus, Leandro GabrielMiller Bertolami, Marcelo MiguelRomero, Alejandra DanielaGarcía-Berro, E.Isern, J.Kepler, S. O.Ciencias AstronómicasAsteroseismologyElementary particlesStars: individual: ZZ Ceti starsStars: interiorsStars: oscillationsWhite dwarfsWe employ a state-of-the-art asteroseismological model of G117-B15A, the archetype of the H-rich atmosphere (DA) white dwarf pulsators (also known as DAV or ZZ Ceti variables), and use the most recently measured value of the rate of period change for the dominant mode of this pulsating star to derive a new constraint on the mass of axion, the still conjectural non-baryonic particle considered as a candidate for dark matter of the Universe. Assuming that G117-B15A is truly represented by our asteroseismological model, and, in particular, that the period of the dominant mode is associated with a pulsation g mode trapped in the H envelope, we find strong indications of the existence of extra cooling in this star, compatible with emission of axions of mass macos2β=17.4-2.7+2.3 meV.Facultad de Ciencias Astronómicas y Geofísicas2012info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf2792-2799http://sedici.unlp.edu.ar/handle/10915/84570enginfo:eu-repo/semantics/altIdentifier/issn/0035-8711info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2012.21401.xinfo: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:UNLP2025-09-29T11:16:01Zoai:sedici.unlp.edu.ar:10915/84570Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:01.612SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
The rate of cooling of the pulsating white dwarf star G117-B15A: A new asteroseismological inference of the axion mass |
| title |
The rate of cooling of the pulsating white dwarf star G117-B15A: A new asteroseismological inference of the axion mass |
| spellingShingle |
The rate of cooling of the pulsating white dwarf star G117-B15A: A new asteroseismological inference of the axion mass Córsico, Alejandro Hugo Ciencias Astronómicas Asteroseismology Elementary particles Stars: individual: ZZ Ceti stars Stars: interiors Stars: oscillations White dwarfs |
| title_short |
The rate of cooling of the pulsating white dwarf star G117-B15A: A new asteroseismological inference of the axion mass |
| title_full |
The rate of cooling of the pulsating white dwarf star G117-B15A: A new asteroseismological inference of the axion mass |
| title_fullStr |
The rate of cooling of the pulsating white dwarf star G117-B15A: A new asteroseismological inference of the axion mass |
| title_full_unstemmed |
The rate of cooling of the pulsating white dwarf star G117-B15A: A new asteroseismological inference of the axion mass |
| title_sort |
The rate of cooling of the pulsating white dwarf star G117-B15A: A new asteroseismological inference of the axion mass |
| dc.creator.none.fl_str_mv |
Córsico, Alejandro Hugo Althaus, Leandro Gabriel Miller Bertolami, Marcelo Miguel Romero, Alejandra Daniela García-Berro, E. Isern, J. Kepler, S. O. |
| author |
Córsico, Alejandro Hugo |
| author_facet |
Córsico, Alejandro Hugo Althaus, Leandro Gabriel Miller Bertolami, Marcelo Miguel Romero, Alejandra Daniela García-Berro, E. Isern, J. Kepler, S. O. |
| author_role |
author |
| author2 |
Althaus, Leandro Gabriel Miller Bertolami, Marcelo Miguel Romero, Alejandra Daniela García-Berro, E. Isern, J. Kepler, S. O. |
| author2_role |
author author author author author author |
| dc.subject.none.fl_str_mv |
Ciencias Astronómicas Asteroseismology Elementary particles Stars: individual: ZZ Ceti stars Stars: interiors Stars: oscillations White dwarfs |
| topic |
Ciencias Astronómicas Asteroseismology Elementary particles Stars: individual: ZZ Ceti stars Stars: interiors Stars: oscillations White dwarfs |
| dc.description.none.fl_txt_mv |
We employ a state-of-the-art asteroseismological model of G117-B15A, the archetype of the H-rich atmosphere (DA) white dwarf pulsators (also known as DAV or ZZ Ceti variables), and use the most recently measured value of the rate of period change for the dominant mode of this pulsating star to derive a new constraint on the mass of axion, the still conjectural non-baryonic particle considered as a candidate for dark matter of the Universe. Assuming that G117-B15A is truly represented by our asteroseismological model, and, in particular, that the period of the dominant mode is associated with a pulsation g mode trapped in the H envelope, we find strong indications of the existence of extra cooling in this star, compatible with emission of axions of mass macos2β=17.4-2.7+2.3 meV. Facultad de Ciencias Astronómicas y Geofísicas |
| description |
We employ a state-of-the-art asteroseismological model of G117-B15A, the archetype of the H-rich atmosphere (DA) white dwarf pulsators (also known as DAV or ZZ Ceti variables), and use the most recently measured value of the rate of period change for the dominant mode of this pulsating star to derive a new constraint on the mass of axion, the still conjectural non-baryonic particle considered as a candidate for dark matter of the Universe. Assuming that G117-B15A is truly represented by our asteroseismological model, and, in particular, that the period of the dominant mode is associated with a pulsation g mode trapped in the H envelope, we find strong indications of the existence of extra cooling in this star, compatible with emission of axions of mass macos2β=17.4-2.7+2.3 meV. |
| publishDate |
2012 |
| dc.date.none.fl_str_mv |
2012 |
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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/10915/84570 |
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http://sedici.unlp.edu.ar/handle/10915/84570 |
| dc.language.none.fl_str_mv |
eng |
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eng |
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