Ara es mostren els items 1-20 de 33

  • A particle code for deflagrations in white dwarfs. I. Numerical techniques 

    García Senz, Domingo; Bravo Guil, Eduardo; Serichol Augué, Núria (1998-03)
    Article
    Accés restringit per política de l'editorial
    In this paper we report some specific features of the numerical technique used to study the dynamic evolution of massive white dwarfs following the explosive ignition of nuclear fuel under degenerate conditions. We focus ...
  • A three-dimensional picture of the delayed-detonation model of type Ia supernovae 

    Bravo Guil, Eduardo; García Senz, Domingo (2008-02)
    Article
    Accés obert
    Aims. Deflagration models poorly explain the observed diversity of SNIa. Current multidimensional simulations of SNIa predict a significant amount of, so far unobserved, carbon and oxygen moving at low velocities. It has ...
  • Axisymmetric smoothed particle hydrodynamics with self-gravity 

    García Senz, Domingo; Relano, A; Cabezón Gómez, Rubén Martín; Bravo Guil, Eduardo (2009-01)
    Article
    Accés obert
    The axisymmetric form of the hydrodynamic equations within the smoothed particle hydrodynamics (SPH) formalism is presented and checked using idealized scenarios taken from astrophysics (free fall collapse, implosion and ...
  • Beyond the bubble catastrophe of type Ia supernovae: Pulsating reverse detonation models 

    Bravo Guil, Eduardo; García Senz, Domingo (2006-05)
    Article
    Accés restringit per política de l'editorial
  • Collision of detonation waves and its implications in the nucleosynthesis of Type Ia supernovae 

    García Senz, Domingo; Bravo Guil, Eduardo (2001-05)
    Article
    Accés restringit per política de l'editorial
  • Computer simulations using implicit Lagrangian hydrodynamics in 3D 

    Escartín Vigo, José Antonio; García Senz, Domingo; Bravo Guil, Eduardo (2011)
    Comunicació de congrés
    Accés obert
    The method known as Smoothed Particle Hydrodynamics (SPH) is an important tool in modern numerical Astrophysics. It has been extensively used to simulate a large number of systems ranging from planets to clusters of ...
  • Consequences of the Collision Between the Gas Ejected in the Collapse of a White Dwarf and a Low-Mass Star 

    Serichol Augué, Núria; García Senz, Domingo; Bravo Guil, Eduardo (1998-06)
    Article
    Accés restringit per política de l'editorial
  • Constraining deflagration models of type Ia supernovae through intermediate-mass elements 

    García Senz, Domingo; Bravo Guil, Eduardo; Cabezón Gómez, Rubén Martín; Woosley, S E (2007-05)
    Article
    Accés restringit per política de l'editorial
    The physical structure of a nuclear flame is a basic ingredient of the theory of Type Ia supernovae (SNe Ia). Assuming an exponential density reduction with several characteristic times, we have followed the evolution of ...
  • Coulomb corrections to the equation of state of nuclear statistical equilibrium matter: implications for SNIa nucleosynthesis and the accretion-induced collapse of white dwarfs 

    Bravo Guil, Eduardo; García Senz, Domingo (1999-08)
    Article
    Accés obert
    Coulomb corrections to the equation of state of degenerate matter are usually neglected in high-temperature regimes, owing to the inverse dependence of the plasma coupling constant, G, on temperature. However, nuclear ...
  • Detailed spectral modeling of a three-dimensional pulsating reverse detonation model: Too much nickel 

    Baron, E; Jeffery, D J; Branch, D; Bravo Guil, Eduardo; García Senz, Domingo; Hauschildt, P H (2008-01)
    Article
    Accés restringit per política de l'editorial
    We calculate detailed non-LTE synthetic spectra of a pulsating reverse detonation (PRD) model, a novel explosion mechanism for Type Ia supernovae. While the hydro models are calculated in three dimensions, the spectra use ...
  • Gamma-ray emission from SN2014J near maximum optical light 

    Isern Vilaboy, Jordi; Jean, Pierre; Bravo Guil, Eduardo; Knodlseder, Jurgen; Lebrun, François; Churazov, Eugene; Sunyaev, Rashid; Domingo, Alberto; Badenes, Carles; Hartmann, Dieter, H; Hoeflich, Peter; Renaud, Matthieu; Soldi, Simona; Elias Rosa, Nancy; Hernanz Carbó, Margarita; Domínguez Aguilera, Inmaculada; García Senz, Domingo; Lichti, G.G.; Vedrenne, G.; Von Ballmoos, Peter (EDP Sciences, 2016-04)
    Article
    Accés obert
    Context. The optical light curve of Type Ia supernovae (SNIa) is powered by thermalized gamma-rays produced by the decay of 56Ni and 56Co, the main radioactive isotopes synthesized by the thermonuclear explosion of a C/O ...
  • Gamma-ray emission from type Ia supernovae 

    Isern Vilaboy, Jordi; Bravo Guil, Eduardo; Hirschmann, Alina; García Senz, Domingo (2004-02)
    Article
    Accés restringit per política de l'editorial
    The explosion mechanism associated with thermonuclear supernovae is still a matter of debate. Since huge amounts of radioactive elements are synthesized during such explosions, it is possible to use the associated γ-ray ...
  • Gamma-ray spectrum of type Ia supernovae 

    Isern Vilaboy, Jordi; Bravo Guil, Eduardo; Gómez, J.; García Senz, Domingo; Jean, Pierre (1999-12)
    Article
    Accés restringit per política de l'editorial
    The explosion mechanism associated with thermonuclear supernovae (SNia) is still a matter of debate. In this paper we examine the 'f-ray emission of the radioactive debris predicted by the different theoretícal models ...
  • High-temperature combustion: Approaching equilibrium using nuclear networks 

    Cabezón Gómez, Rubén Martín; García Senz, Domingo; Bravo Guil, Eduardo (2004-04)
    Article
    Accés restringit per política de l'editorial
  • Hypersonic collision of a blast wave on a low-mass star 

    García Senz, Domingo; Serichol Augué, Núria; Bravo Guil, Eduardo (2001-03)
    Article
    Accés obert
    When a neutron star is born as a result of the accretion-induced collapse (AIC) of a white dwarf, a small but signi_cant fraction of its mass can be simultaneously expelled at a velocity of around 104 kms −1. In this paper ...
  • Improving smoothed particle hydrodynamics with an integral approach to calculating gradients 

    García Senz, Domingo; Cabezón Gómez, Rubén Martín; Escartín Vigo, José Antonio (2012-01-26)
    Article
    Accés obert
    Context. The smoothed particle hydrodynamics (SPH) technique is a well-known numerical method that has been applied to simulate the evolution of a wide variety of systems. Modern astrophysical applications of the method ...
  • Interaction of Supernovae remnants: From the circumstellar medium to the terrestrial laboratory 

    Velarde, P; García Senz, Domingo; Bravo Guil, Eduardo; Ogando, F; Relaño, A; Oliva, E (2006-09)
    Article
    Accés obert
    The evolution of supernova remnants (SNRs) represents a useful and natural laboratory for gasdynamics studies. In this paper the results of several hydrodynamical simulations of the propagation and early phases of interaction ...
  • Is there a hidden hole in type la supernova remnants? 

    García Senz, Domingo; Badenes Montoliu, Carles; Serichol, N. (2012-01-20)
    Article
    Accés obert
    In this paper, we report on the bulk features of the hole carved by the companion star in the material ejected during a Type Ia supernova (SN Ia) explosion. In particular we are interested in the long-term evolution of the ...
  • Nucleosynthesis as a result of multiple delayed detonations in Type Ia Supernovae 

    García Senz, Domingo; Bravo Guil, Eduardo (2003-05)
    Article
    Accés restringit per política de l'editorial
    The explosion of a white dwarf of mass 1.36 M⊙ has been simulated in three dimensions with the aid of a SPH code. The explosion follows the delayed detonation paradigm. In this case the deflagration-detonation transition ...
  • 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
    Accés obert
    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 ...