Browsing by Author "0d87d158-663b-481d-9a2f-ef71c87bfb3a"

Now showing items 1-10 of 10

    • A magnetar model for the hydrogen rich super luminous supernova iPTF14hls 
      Dessart, Luc (EDP Sciences, 2018)
      Transient surveys have recently revealed the existence of H-rich super-luminous supernovae (SLSN; e. g., iPTF14hls, OGLE-SN14-073) that are characterized by an exceptionally high time-integrated bolometric luminosity, a ...
    • Ejecta mass diagnostics of type Ia supernovae 
      Wilk, Kevin D.; Hillier, D. John; Dessart, Luc (Oxford University Press, 2018)
      We present one-dimensional non-local thermodynamic equilibrium time-dependent radiative transfer simulations (using CMFGEN) of two sub-Chandrasekhar (sub-M-Ch), one M-Ch and one super-M-Ch Type Ia SN ejecta models. Three ...
    • Evidence for sub - Chandrasekhar- mass progenitors of type Ia supernovae at the faint end of the width ... 
      Blondin, Stephane; Dessart, Luc; Hillier, D. John; Khokhlov, Alexei M. (Oxford University Pres, 2017)
      The faster light-curve evolution of low-luminosity Type Ia supernovae (SNe Ia) suggests that they could result from the explosion of white dwarf (WD) progenitors below the Chandrasekhar mass (M-Ch). Here we present 1D ...
    • Explosion of red supergiant stars: influence of the atmospheric structure on shock breakout and early time ... 
      Dessart, Luc; Hillier, D. John; Audit, Edouard (EDP Sciences, 2017)
      Early-time observations of Type II supernovae (SNe) 2013cu and 2013fs have revealed an interaction of ejecta with material near the star surface. Unlike Type IIn SN 2010jl, which interacts with a dense wind for similar to ...
    • Progenitors of low-luminosity Type II-Plateau supernovae 
      Lisakov, Sergey M.; Dessart, Luc; Hillier, D. John; Waldman, Roni; Livne, Eli (Oxford University Press, 2018)
      The progenitors of low-luminosity Type II-Plateau supernovae (SNe II-P) are believed to be red supergiant (RSG) stars, but there is much disparity in the literature concerning their mass at core collapse and therefore on ...
    • Simulations of light curves and spectra for superluminous Type Ic supernovae powered by magnetars 
      Dessart, Luc (EDP Sciences, 2019)
      Numerous superluminous supernovae (SLSNe) of Type Ic have been discovered and monitored in the last decade. The favored mechanism at their origin is a sustained power injection from a magnetar. This study presents non-local ...
    • Super-luminous type II supernovae powered by magnetars 
      Dessart, Luc; Audit, Edouard (EDP Sciences, 2018-05-15)
      Magnetar power is believed to be at the origin of numerous super-luminous supernovae (SNe) of Type Ic, arising from compact, hydrogen-deficient, Wolf-Rayet type stars. Here, we investigate the properties that magnetar power ...
    • Supernovae from blue supergiant progenitors: What a mess! 
      Dessart, Luc; Hillier, D. John (EDP Sciences, 2019)
      Supernova (SN) 1987A was classified as a peculiar Type II SN because of its long rising light curve and the persistent presence of H I lines in optical spectra. It was subsequently realized that its progenitor was a blue ...
    • Supernovae from massive stars with extended tenuous envelopes 
      Dessart, Luc; Yoon, Sung-Chul; Livne, Eli; Waldman, Roni (EDP Sciences S A, 2018)
      Massive stars with a core-halo structure are interesting objects for stellar physics and hydrodynamics. Using simulations for stellar evolution, radiation hydrodynamics, and radiative transfer, we study the explosion of ...
    • Type Ib/Ic Supernovae: Effect of Nickel Mixing on the Early-time Color Evolution and Implications for the ... 
      Yoon, Sung-Chul; Chun, Wonseok; Tolstov, Alexey; Blinnikov, Sergey; Dessart, Luc (IOP Publishing, 2019)
      We investigate the effect of mixing of radioactive nickel (Ni-56) on the early-time color evolution of Type Ib and Ic supernovae (SNe Ib/Ic) using multigroup radiation hydrodynamics simulations. We consider both helium-rich ...