Browsing by Author "Bravo Guil, Eduardo"
Now showing items 1-20 of 82
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A Chandrasekhar mass progenitor for the type Ia supernova remnant 3C 397 from the enhanced abundances of nickel and manganese
(2015-03-12)
Article
Restricted access - publisher's policyDespite decades of intense efforts, many fundamental aspects of Type Ia supernovae (SNe Ia) remain elusive. One of the major open questions is whether the mass of an exploding white dwarf (WD) is close to the Chandrasekhar ... -
A model grid for the spectral analysis of X-ray emission in young Type Ia supernova remnants
(2005-08)
Article
Restricted access - publisher's policyWe address a new set of models for the spectral analysis of the X-ray emission from young, ejecta-dominated Type Ia supernova remnants. These models are based on hydrodynamic simulations of the interaction between Type Ia ... -
A new kind of type I supernovae?
(Istituto Nazionale di Astrofisica, 2000-12)
Article
Open AccessIn 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 ... -
A particle code for deflagrations in white dwarfs. I. Numerical techniques
(1998-03)
Article
Restricted access - publisher's policyIn 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 Super-solar metallicity for the progenitor of Kepler's supernova
(2013-04)
Article
Open AccessWe have performed deep X-ray observations of the remnant of Kepler's supernova (SN 1604) as a Key Project of the Suzaku Observatory. Our main goal is to detect secondary Fe-peak elements in the supernova (SN) ejecta to ... -
A three-dimensional picture of the delayed-detonation model of type Ia supernovae
(2008-02)
Article
Open AccessAims. 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 ... -
Are the models for type Ia supernova progenitors consistent with the properties of supernova remnants?
(2007-06)
Article
Restricted access - publisher's policyWe explore the relationship between the models for progenitor systems of Type Ia supernovae and the properties of the supernova remnants that evolve after the explosion. Most models for Type Ia progenitors in the ... -
Axisymmetric smoothed particle hydrodynamics with self-gravity
(2009-01)
Article
Open AccessThe 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
(2006-05)
Article
Restricted access - publisher's policy -
Bounds on the possible evolution of the gravitational constant from cosmological type-Ia supernovae
(2002-01)
Article
Open AccessRecent 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, ... -
Chandrasekhar and sub-Chandrasekhar models for the x-ray emission of type Ia Supernova remnants. I. Bulk properties
(Institute of Physics (IOP), 2018-10-03)
Article
Open AccessType Ia supernovae originate from the explosion of carbon–oxygen white dwarfs in binary systems, but the exact nature of their progenitors remains elusive. The bulk properties of Type Ia supernova remnants, such as the ... -
Clues to type ia supernovae progenitors from degenerate carbon ignition models
(1996-04)
Article
Open Access -
Cobalt-56 gamma-ray emission lines from the type Ia supernova 2014J
(2014-08-28)
Article
Restricted access - publisher's policyA type Ia supernova is thought to be a thermonuclear explosion of either a single carbon–oxygen white dwarf or a pair of merging white dwarfs. The explosion fuses a large amount of radioactive 56Ni. After the explosion, ... -
Collision of detonation waves and its implications in the nucleosynthesis of Type Ia supernovae
(2001-05)
Article
Restricted access - publisher's policy -
Composition of the innermost core-collapse supernova ejecta
(2006-01)
Article
Restricted access - publisher's policyWith currently known input physics and computer simulations in one dimension, a self-consistent treatment of core-collapse supernovae does not yet lead to successful explosions, while two-dimensional models show some ... -
Computer simulations using implicit Lagrangian hydrodynamics in 3D
(2011)
Conference lecture
Open AccessThe 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
(1998-06)
Article
Restricted access - publisher's policy -
Constraining deflagration models of type Ia supernovae through intermediate-mass elements
(2007-05)
Article
Restricted access - publisher's policyThe 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 ... -
Constraints on the physics of type Ia supernovae from the X-ray spectrum of the Tycho supernova remnant
(2006-07)
Article
Restricted access - publisher's policyWe explore the relationship between the models for progenitor systems of Type Ia supernovae and the properties of the supernova remnants that evolve after the explosion. Most models for Type Ia progenitors in the ... -
Coulomb corrections to the equation of state of nuclear statistical equilibrium matter: implications for SNIa nucleosynthesis and the accretion-induced collapse of white dwarfs
(1999-08)
Article
Open AccessCoulomb 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 ...
