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An asteroseismic constraint on the mass of the axion from the period drift of the pulsating da white dwarf star L19-2

dc.contributor.authorCórsico, Alejandro H.
dc.contributor.authorRomero, Alejandra Daniela
dc.contributor.authorAlthaus, Leandro G.
dc.contributor.authorGarcía-Berro Montilla, Enrique
dc.contributor.authorIsern Vilaboy, Jordi
dc.contributor.authorKepler, S.O.
dc.contributor.authorMiller Bartolami, Marcelo M.
dc.contributor.authorSullivan, Denis J.
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física
dc.date.accessioned2017-05-09T06:38:11Z
dc.date.available2017-05-09T06:38:11Z
dc.date.issued2016-07-01
dc.identifier.citationCórsico, A. H., Romero, A. D., Althaus, L. G., Garcia-berro, E., Isern, J., Kepler, S., Miller, M.M, Sullivan, D. An asteroseismic constraint on the mass of the axion from the period drift of the pulsating da white dwarf star L19-2. "Journal of cosmology and astroparticle physics", 1 Juliol 2016, vol. 2016, p. 1-20.
dc.identifier.issn1475-7516
dc.identifier.urihttp://hdl.handle.net/2117/104210
dc.description.abstractWe employ an asteroseismic model of L19-2, a relatively massive (Msstarf ~ 0.75 M¿) 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 (¿ ~ 113 s and ¿ ~ 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 cos2ß lesssim 25 meV or an axion-electron coupling constant of gae lesssim 7 × 10-13.
dc.format.extent20 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Física::Astronomia i astrofísica
dc.subject.lcshWhite dwarfs
dc.subject.lcshParticles (Nuclear physics)
dc.subject.otherElementary particles - stars
dc.subject.otherOscillations - stars
dc.subject.otherZZ Ceti stars
dc.subject.otherWhite dwarfs
dc.titleAn asteroseismic constraint on the mass of the axion from the period drift of the pulsating da white dwarf star L19-2
dc.typeArticle
dc.subject.lemacEstels nans
dc.contributor.groupUniversitat Politècnica de Catalunya. GAA - Grup d'Astronomia i Astrofísica
dc.identifier.doi10.1088/1475-7516/2016/07/036
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://iopscience.iop.org/article/10.1088/1475-7516/2016/07/036/meta
dc.rights.accessOpen Access
local.identifier.drac19772390
dc.description.versionPostprint (published version)
dc.relation.projectidArgentina/AGENCIA/Programa de Modernizacin Tecnolgica/BID 1728/OC-AR
dc.relation.projectidPIP 112- 200801-00940 grant from CONICET
dc.relation.projectidinfo:eu-repo/grantAgreement/MINECO//AYA2014-59084-P/ES/SIMULACIONES MULTIDIMENSIONALES DE NOVAS Y SUPERNOVAS IA/
dc.relation.projectidBrasil/CNPq
dc.relation.projectidPRONEX-FAPERGS/CNPq
local.citation.authorCórsico, A. H.; Romero, A. D.; Althaus, L. G.; Garcia-berro, E.; Isern, J.; Kepler, S.; Miller, M.M; Sullivan, D.
local.citation.publicationNameJournal of cosmology and astroparticle physics
local.citation.volume2016
local.citation.startingPage1
local.citation.endingPage20


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