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dc.date.accessioned | 2019-10-31T17:06:00Z | |
dc.date.available | 2019-10-31T17:06:00Z | |
dc.date.issued | 2012 | |
dc.identifier.uri | http://sedici.unlp.edu.ar/handle/10915/84570 | |
dc.description.abstract | 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. | en |
dc.format.extent | 2792-2799 | es |
dc.language | en | es |
dc.subject | Asteroseismology | es |
dc.subject | Elementary particles | es |
dc.subject | Stars: individual: ZZ Ceti stars | es |
dc.subject | Stars: interiors | es |
dc.subject | Stars: oscillations | es |
dc.subject | White dwarfs | es |
dc.title | The rate of cooling of the pulsating white dwarf star G117-B15A: A new asteroseismological inference of the axion mass | en |
dc.type | Articulo | es |
sedici.identifier.other | doi:10.1111/j.1365-2966.2012.21401.x | es |
sedici.identifier.other | eid:2-s2.0-84864936032 | es |
sedici.identifier.issn | 0035-8711 | es |
sedici.creator.person | Córsico, Alejandro Hugo | es |
sedici.creator.person | Althaus, Leandro Gabriel | es |
sedici.creator.person | Miller Bertolami, Marcelo Miguel | es |
sedici.creator.person | Romero, Alejandra Daniela | es |
sedici.creator.person | García-Berro, E. | es |
sedici.creator.person | Isern, J. | es |
sedici.creator.person | Kepler, S. O. | es |
sedici.subject.materias | Ciencias Astronómicas | es |
sedici.description.fulltext | true | es |
mods.originInfo.place | Facultad de Ciencias Astronómicas y Geofísicas | es |
sedici.subtype | Articulo | es |
sedici.rights.license | Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) | |
sedici.rights.uri | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
sedici.description.peerReview | peer-review | es |
sedici.relation.journalTitle | Monthly Notices of the Royal Astronomical Society | es |
sedici.relation.journalVolumeAndIssue | vol. 424, no. 4 | es |
sedici.rights.sherpa | * Color: verde* Pre-print del autor: si* Post-print del autor: si* Versión de editor/PDF:si* Condiciones:>>El pre-print sólo puede depositarse antes de la aceptación>>Pre-print on author's personal website, employer website, free public server or pre-prints in subject area>>El pre-print debe acompañarse de una declaración establecida (ver enlace)>>Pre-print set statement must be amended upon publication (see policy)>>La versión de editor/PDF puede utilizarse>>Author's Post-print on Institutional repositories or Central repositories>>Publisher's version/PDF on Institutional repositories or Central repositories, with all rights reserved (see policy)>>La fuente editorial debe reconocerse>>Debe ir enlazado a la versión de editor>>La copia archivada debe acompañarse de la frase establecida (ver Política)* Link a Sherpa: http://sherpa.ac.uk/romeo/issn/0035-8711/es/ |