Exploració per autor "Kepler, S.O."

Ara es mostren els items 1-4 de 4

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

      Córsico, Alejandro H.; Romero, Alejandra Daniela; Althaus, Leandro G.; García-Berro Montilla, Enrique; Isern Vilaboy, Jordi; Kepler, S.O.; Miller Bartolami, Marcelo M.; Sullivan, Denis J. (2016-07-01)
      Article
      Accés obert
      We 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 ...

    • Constraining the neutrino magnetic dipole moment from white dwarf pulsations 

      Corsico, Alejandro H.; Althaus, Leandro G.; Miller Bartolami, Marcelo M.; Kepler, S.O.; García-Berro Montilla, Enrique (2014-08-01)
      Article
      Accés obert
      Pulsating white dwarf stars can be used as astrophysical laboratories to constrain the properties of weakly interacting particles. Comparing the cooling rates of these stars with the expected values from theoretical models ...

    • Magnetic white dwarfs: Observations, theory and future prospects 

      García-Berro Montilla, Enrique; Kilic, Mukremin; Kepler, S.O. (2016-01)
      Article
      Accés obert
      Isolated magnetic white dwarfs have field strengths ranging from 10(3)G to 10(9) G, and constitute an interesting class of objects. The origin of the magnetic field is still the subject of a hot debate. Whether these fields ...

    • SDSS¿J124043.01+671034.68: the partially burned remnant of a low-mass white dwarf that underwent thermonuclear ignition? 

      Gänsicke, Boris T.; Koester, D.; Raddi, Roberto; Toloza, Odette; Kepler, S.O. (Oxford University Press, 2020-08-21)
      Article
      Accés obert
      The white dwarf SDSS¿J124043.01+671034.68 (SDSS¿J1240+6710) was previously found to have an oxygen-dominated atmosphere with significant traces of neon, magnesium, and silicon. A possible origin via a violent late thermal ...