Now showing items 1-17 of 17

    • A new kind of type I supernovae? 

      Isern Vilaboy, Jordi; Bravo Guil, Eduardo; Domínguez, Inmaculada (Istituto Nazionale di Astrofisica, 2000-12)
      Article
      Open Access
      In this paper we examine the consequences of the propagation of a slow deflagration front through a C-0 white dwarf that leads to the formation of a marginally bound remnant. This situation corresponds to the transition ...
    • Bounds on the possible evolution of the gravitational constant from cosmological type-Ia supernovae 

      Gaztañaga, E.; García-Berro Montilla, Enrique; Isern Vilaboy, Jordi; Bravo Guil, Eduardo; Domínguez, Inmaculada (2002-01)
      Article
      Open Access
      Recent high-redshift type-Ia supernovae results can be used to set new bounds on a possible variation of the gravitational constant G. If the local value of G at the space-time location of distant supernovae is different, ...
    • Clues to type ia supernovae progenitors from degenerate carbon ignition models 

      Bravo Guil, Eduardo; Tornambé, A; Domínguez, Inmaculada; Isern Vilaboy, Jordi (1996-04)
      Article
      Open Access
    • Dark energy and thermonuclear supernovae 

      Domínguez, Inmaculada; Bravo Guil, Eduardo; Piersanti, L.; Tornambé, A.; Straniero, O.; Höfflich, P. (Ulla, A.; Manteiga, M. / Real Sociedad Española de Física, 2007)
      Conference report
      Open Access
      Nowadays it is widely accepted that the current Universe is dominated by dark energy and exotic matter, the so called StandardModel of Cosmoloy or _CDM model. All the available data (Thermonuclear Supernovae, Cosmic Microwave ...
    • Metallicity as a Source of Dispersion in the SNIa Bolometric Light Curve Luminosity-width Relationship 

      Bravo Guil, Eduardo; Domínguez, Inmaculada; Badenes Montoliu, Carles; Piersanti, Luciano; Straniero, Oscar (2010-02-18)
      Article
      Restricted access - publisher's policy
      The recognition that the metallicity of Type Ia supernova (SNIa) progenitors might bias their use for cosmological applications has led to an increasing interest in its role in shaping SNIa light curves. We explore the ...
    • Observation of SN2011fe with INTEGRAL - I : pre-maximum phase 

      Isern Vilaboy, Jordi; Jean, Pierre; Bravo Guil, Eduardo; Diehl, Roland; Knödlseder, Jurgen; Domingo, A.; Hirschmann, Alina; Hoeflich, Peter; Lebrun, F.; Renaud, M.; Soldi, Simona; Elias-Rosa, Nancy; Hernanz Carbó, Margarita; Kulebi, Baybar; Zhang, X.; Badenes Montoliu, Carles; Domínguez, Inmaculada; García Senz, Domingo; Jordi, Carme; Lichti, G.; Vedrenne, G.; von Ballmoos, Peter (2013-04)
      Article
      Open Access
      Context. SN2011fe was detected by the Palomar Transient Factory in M101 on August 24, 2011, a few hours after the explosion. From the early optical spectra it was immediately realized that it was a Type Ia supernova, thus ...
    • On the internal composition of white dwarfs 

      Isern Vilaboy, Jordi; Bravo Guil, Eduardo; García-Berro Montilla, Enrique; Domínguez, Inmaculada; Salaris, M. (2001-05)
      Article
      Restricted access - publisher's policy
    • On the photometric homogeneity of type IA supernovae 

      Bravo Guil, Eduardo; Domínguez, Inmaculada; Isern Vilaboy, Jordi; Canal Corretger, Ramon; Höflich, P.; Labay, Javier (1993-03)
      Article
      Open Access
      The dependence of the characteristics of the light curves of Type Ia supernovae on the ignition density of the progenitor white dwarf is studied with the aid of two models of propagation of the thermonuclear burning front: ...
    • Pulsating reverse detonation models of Type Ia supernovae. II. Explosion 

      Bravo Guil, Eduardo; García Senz, Domingo; Cabezón Gómez, Rubén Martín; Domínguez, Inmaculada (2009-04)
      Article
      Restricted access - publisher's policy
      Observational evidences point to a common explosion mechanism of Type Ia supernovae based on a delayed detonation of a white dwarf (WD). However, all attempts to find a convincing ignition mechanism based on a delayed ...
    • Rotating type Ia SN progenitors: explosion and light curves 

      Domínguez, Inmaculada; Piersanti, L.; Bravo Guil, Eduardo; Tornambé, A.; Straniero, O.; Gagliardi, S. (2006-06)
      Article
      Restricted access - publisher's policy
      Based on the rigidly rotating progenitor models found to be able to grow up to the canonical Chandrasekhar mass limit and beyond, and undergo a thermonuclear explosion, we compute the explosions, detailed nucleosynthesis, ...
    • Supernovae and dark energy 

      Domínguez, Inmaculada; Bravo Guil, Eduardo; Piersanti, Luciano; Straniero, Oscar; Tornambé, Amedeo (Astronomical Society of the Pacific, 2008)
      Conference report
      Open Access
      A decade ago the observations of thermonuclear supernovae at high-redhifts showed that the expansion rate of the Universe is accelerating and since then, the evidence for cosmic acceleration has gotten stronger. This ...
    • The elusive nature of the r-stars 

      Domínguez, Inmaculada; Piersanti, Luciano; Cabezón Gómez, Rubén Martín; Zamora, O.; García Senz, Domingo; Abia, C.; Straniero, Oscar (2010-10-10)
      Article
      Open Access
      R stars are carbon stars, less luminous and hotter than the carbon stars evolving along the AGB phase. Thus, their carbon enrichment cannot be a consequence of the third dredge-up, a fact also in agreement with the lack ...
    • The fate of CO white dwarfs that experience slow deflagrations 

      Bravo Guil, Eduardo; Domínguez, Inmaculada; Isern Vilaboy, Jordi (1999-10)
      Article
      Open Access
      It has been suggested that the differences among the observational Type Ia supernovae (SNIa) set can be accounted for by invoking two regimes of propagation of combustion. Normal SNIa should be produced by rapid deflagrations ...
    • The impact of chemical differentiation of white dwarfs on thermonuclear supernovae 

      Bravo Guil, Eduardo; Althaus, Leandro Gabriel; García-Berro Montilla, Enrique; Domínguez, Inmaculada (2010-12-16)
      Article
      Open Access
      Aims. Gravitational settling of 22Ne in cooling white dwarfs can affect the outcome of thermonuclear supernovae. We investigate how the supernova energetics and nucleosynthesis are in turn influenced by this process. We ...
    • Thermal X-ray emission from shocked ejecta in Type Ia supernova remnants: Prospects for explosion mechanism identification 

      Badenes Montoliu, Carles; Bravo Guil, Eduardo; Borkowski, K.J.; Domínguez, Inmaculada (2003-08)
      Article
      Restricted access - publisher's policy
      The explosion mechanism behind Type Ia supernovae is a matter of continuing debate. The diverse attempts to identify or at least constrain the physical processes involved in the explosion have been only partially successful ...
    • Type Ia supernovae and the 12C+12C reaction rate 

      Bravo Guil, Eduardo; Piersanti, Luciano; Domínguez, Inmaculada; Straniero, Oscar; Isern Vilaboy, Jordi; Escartín Vigo, José Antonio (2011-11-22)
      Article
      Open Access
      Context. Even if the 12C+12C reaction plays a central role in the ignition of type Ia supernovae (SNIa), the experimental determination of its cross-section at astrophysically relevant energies (E ≲ 2 MeV) has never been ...
    • Type Ia supernovae: Can Coriolis force break the symmetry of the gravitational confined detonation explosion mechanism? 

      García Senz, Domingo; Cabezón, Rubén Martin; Domínguez, Inmaculada; Thielemann, Friedrich-K (Institute of Physics (IOP), 2016-03-10)
      Article
      Open Access
      © 2016. The American Astronomical Society. All rights reserved.. Currently the number of models aimed at explaining the phenomena of type Ia supernovae is high and distinguishing between them is a must. In this work we ...