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Time variation of G and αwithin models with extra dimensions
P. Loren-Aguilar, E. Garcia-Berro, J. Isern +1
We derive the formulae for the time variation of the gravitational "constant" G and of the fine structure "constant" αin various models with extra dimensions and analyze their cons…
The Impact of the Chemical Stratification of White Dwarfs on the Classification of Classical Novae
Jordi Jose, Margarita Hernanz, Enrique Garcia-Berro +2
We analyse the impact of the initial abundances of the underlying white dwarf core on the nucleosynthesis accompanying classical nova outbursts, in the framework of hydrodynamic mo…
The frequency of occurrence of novae hosting an ONe white dwarf
P. Gil-Pons, E. Garcia-Berro, J. Jose +2
In this paper, we revisit the problem of the determination of the frequency of occurrence of galactic nova outbursts which involve an oxygen-neon (ONe) white dwarf. The improvement…
Creation of twistless circles in a model of stellar pulsations
Andreea Munteanu, Enrique Garcia-Berro, Jordi Jose +1
In the present paper, we study the Poincare map associated to a periodic perturbation, both in space and time, of a linear Hamiltonian system. The dynamical system embodies the ess…
Time variation of the gravitational and fine structure constants in models with extra dimensions
E. Garcia-Berro, Yu. A. Kubyshin, P. Loren-Aguilar
We derive formulae for the time variation of the gravitational ``constant'' and of the fine structure ``constant'' in various models with extra dimensions and analyze their consist…
A weakly non-adiabatic one-zone model of stellar pulsations: application to Mira stars
Andreea Munteanu, Enrique Garcia-Berro, Jordi Jose
There is growing observational evidence that the irregular changes in the light curves of certain variable stars might be due to deterministic chaos. Supporting these conclusions,…