Browsing by Author "0d87d158-663b-481d-9a2f-ef71c87bfb3a"
Now showing items 1-11 of 11
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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Blondin, Stephane; Dessart, Luc; Hillier, D. John (Oxford University Press, 2018)While Chandrasekhar-mass (MCh) models with a low 56Ni yield can match the peak lumi- nosities of fast-declining, 91bg-like Type Ia supernovae (SNe Ia), they systematically fail to reproduce their faster light-curve evolution. ...
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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 ...