Now showing items 21-40 of 40

  • Measurement of very low (alpha,n) cross sections of astrophysical interest 

    Taín, J.L.; Jordan Herrero, Donato; Agramunt Ros, Jorge; Algora, A.; Bandac, I; Bettini, S; Caballero Folch, Roger; Calviño Tavares, Francisco; Cano-Ott, D; Cortés Rossell, Guillem Pere; Domingo-Pardo, C; Fraile, L. M.; Garcia, A.R.; Gomez-Cadenas, J.J.; José Pont, Jordi; Longland, Richard; Mendoza, E (Institute of Physics (IOP), 2016)
    Article
    Open Access
    The reactions 13C( ; n)16O and 22Ne( ; n)25Mg are the primary sources of neutrons for the astrophysical s-process. The feasibility of cross section measurements within the respective Gamow windows is discussed in quantitative ...
  • Multidimensional modeling of Nova outbursts 

    José Pont, Jordi (2014-02-28)
    Part of book or chapter of book
    Restricted access - publisher's policy
  • Nucleosynthesis during the merger of white dwarfs and the origin of R Coronae Borealis stars 

    Longland, Richard Leigh; Lorén Aguilar, Pablo; José Pont, Jordi; García-Berro Montilla, Enrique; Althaus, Leandro Gabriel; Isern Vilaboy, Jordi (2011-08-20)
    Article
    Restricted access - publisher's policy
    Many hydrogen-deficient stars are characterized by surface abundance patterns that are hard to reconcile with conventional stellar evolution. Instead, it has been suggested that they may represent the result of a merger ...
  • Nucleosynthesis in novae 

    José Pont, Jordi (2017)
    Conference report
    Open Access
  • On presolar stardust grains from CO classical novae 

    Iliadis, Christian; Downen, Lori N.; José Pont, Jordi; Nittler, Larry R.; Starrfield, Sumner (Institute of Physics (IOP), 2018-03-10)
    Article
    Open Access
    About 30%–40% of classical novae produce dust 20–100 days after the outburst, but no presolar stardust grains from classical novae have been unambiguously identified yet. Although several studies claimed a nova paternity ...
  • On the parallelization of stellar evolution codes 

    Martin Rodriguez, David; José Pont, Jordi; Longland, Richard Leigh (Springer (Biomed Central Ltd.), 2018-11-01)
    Article
    Open Access
    Multidimensional nucleosynthesis studies with hundreds of nuclei linked through thousands of nuclear processes are still computationally prohibitive. To date, most nucleosynthesis studies rely either on hydrostatic/hydrodynamic ...
  • P-process nucleosynthesis in detonating white dwarfs in the light of multidimensional hydrodynamical models 

    Goriely, S; García Senz, Domingo; Bravo Guil, Eduardo; José Pont, Jordi (2005-12)
    Article
    Open Access
    The p-process nucleosynthesis in He-accreting white dwarfs with sub-Chandrasekhar mass is revisited in the light of multi-dimensional hydrodynamical simulations. Post-processing calculations are performed on a sample of ...
  • Recent advances in the modelling of classical novae and type I X-ray bursts 

    José Pont, Jordi; Casanova Bustamante, Jordi; Parikh, Anuj Ramesh; García-Berro Montilla, Enrique (2012)
    Article
    Open Access
    Classical nova outbursts and type I X-ray bursts are thermonuclear stellar explosions driven by charged-particle reactions. Extensive numerical simulations of nova explosions have shown that the accreted envelopes attain ...
  • Science with e-ASTROGAM: a space mission for MeV–GeV gamma-ray astrophysics 

    De Angelis, Alejandro; Tatischeff, Vincent; Grenier, Isabelle A.; José Pont, Jordi (2018-08-01)
    Article
    Open Access
    e-ASTROGAM (‘enhanced ASTROGAM’) is a breakthrough Observatory space mission, with a detector composed by a Silicon tracker, a calorimeter, and an anticoincidence system, dedicated to the study of the non-thermal Universe ...
  • SIXE: An X-ray experiment for the MINISAT platform 

    Bravo Guil, Eduardo; García-Berro Montilla, Enrique; Gutiérrez Cabello, Jordi; José Pont, Jordi; García Senz, Domingo; Cabestany Moncusí, Joan; Madrenas Boadas, Jordi (2001-01)
    Article
    Restricted access - publisher's policy
    SIXE (Spanish Italian X-ray Experiment) is an X-ray payload with geometric area of ~3200 cm2 , formed by four identical gas-filled Multiwire Proportional Counters devoted for a long term spectroscopy of selected X-ray ...
  • SIXE (Spanish Italian X-ray Experiment): a Payload for the Spanish MINISAT-02 Satellites 

    Bravo Guil, Eduardo; García-Berro Montilla, Enrique; José Pont, Jordi; Giovannelli, F (Istituto Nazionale di Astrofisica, 1999-12)
    Article
    Open Access
    SIXE (Spanish Italian X-ray Experiment) is an X-ray payload with geometric area of ~3200 cm2 , formed by four identical gas-filled Multiwire Proportional Counters devoted for a long term spectroscopy of selected X-ray ...
  • Spectroscopic study of Ne-20 + p reactions using the JENSA gas-jet target to constrain the astrophysical F-18(p, alpha)O-15 rate 

    Bardayan, D. W.; Chipps, Kelly A.; Ahn, S.; Blackmon, J. C.; Carmichael, S.; Greife, U.; José Pont, Jordi; Kontos, A.; Matos, Mireya E.; Thompson, Paul (AMER PHYSICAL SOC, 2017-11-16)
    Article
    Open Access
    The Jet Experiments in Nuclear Structure and Astrophysics (JENSA) gas-jet target was used to perform spectroscopic studies of 20Ne+p reactions. Levels in 19Ne were probed via the 20Ne(p,d)19Ne reaction to constrain the ...
  • Stellar origins of extremely 13C- AND 15N-enriched presolar sic grains: Novae or Supernovae? 

    Liu, Nan; Nittler, L.; Alexander, Conel M. O'D.; Wang, Jianhua; Pignatari, Marco; José Pont, Jordi; Nguyen, Ann (2016-04-01)
    Article
    Open Access
  • Synthesis of C-rich dust in CO nova outbursts 

    José Pont, Jordi; Halabi, Ghina M.; El Eid, MounibF. (2016-09)
    Article
    Open Access
    Context. Classical novae are thermonuclear explosions that take place in the envelopes of accreting white dwarfs in stellar binary systems. The material transferred onto the white dwarf piles up under degenerate conditions, ...
  • The influence of uncertainties in the O-15(alpha, gamma) Ne-19 reaction rate on models of type I X-Ray bursts 

    Davids, B.; Cyburt, Richard H.; José Pont, Jordi; Mythili, Subramanian (2011-07-01)
    Article
    Restricted access - publisher's policy
    We present aMonte Carlo calculation of the astrophysical rate of the 15O(α,γ)19Ne reaction based on an evaluation of published experimental data. By considering the likelihood distributions of individual resonance parameters ...
  • Three-dimensional simulations of the interaction between the nova ejecta, accretion disk, and companion star 

    Figueira, Joana; José Pont, Jordi; García-Berro Montilla, Enrique; García Senz, Domingo (EDP Sciences, 2018-05-01)
    Article
    Open Access
  • Three–dimensional simulations of turbulent convective mixing in ONe and CO classical nova explosions 

    Casanova, J.; José Pont, Jordi; García-Berro Montilla, Enrique; Shore, Steven N. (EDP Sciences, 2016-10)
    Article
    Open Access
  • Two-dimensional simulations of mixing in classical novae: The effect of white dwarf composition and mass 

    Casanova, J; José Pont, Jordi; Shore, Steven N. (EDP Sciences, 2018-11-01)
    Article
    Restricted access - publisher's policy
  • Underground study of the 17O(p,alpha)18F reaction relevant for explosive hydrogen burning 

    Di Leva, A; Scott, D.A.; Caciolli, A.; Formicola, A.; Strieder, F.; Aliotta, M.; Anders, M.; Bemmerer, D.; Broggini, C.; Corvisiero, P.; Elekes, Z.; Fulop, Zs.; Gervino, G.; Guglielmetti, G.; Gustavino, C.; Gyurky, Gy.; Imbriani, G.; José Pont, Jordi; Junker, M. (2014-01)
    Article
    Open Access
    The 17O(p,γ )18F reaction affects the production of key isotopes (e.g., 18F and 18O) in the explosive hydrogen burning that powers classical novae. Under these explosive conditions, the reaction rate is dominated by ...
  • White dwarf mergers and the origin of R coronae borealis stars 

    Lorén Aguilar, Pablo; Longland, Richard Leigh; José Pont, Jordi; García-Berro Montilla, Enrique; Althaus, Leandro Gabriel; Isern-Fontanet, J. (2012)
    Conference report
    Restricted access - publisher's policy
    We present a nucleosynthesis study of the merger of a 0.4 M⊙ helium white dwarf with a 0.8 M⊙ carbon-oxygen white dwarf, coupling the thermodynamic history of Smoothed Particle Hydrodynamics particles with a post-processing ...