43 citations · 43 across the 1 of their papers we have counts for
5 papers
The circumstellar medium around a rapidly rotating, chemically homogeneously evolving, possible gamma-ray burst progenitor
Allard Jan van Marle, Norbert Langer, Sung-Chul Yoon +1
Rapidly rotating, chemically homogeneously evolving massive stars are considered to be progenitors of long gamma-ray bursts. We present numerical simulations of the evolution of th…
Evolution of Gamma-Ray Burst Progenitors at Low Metallicity
Sung-Chul Yoon, Norbert Langer
Despite the growing evidence that long Gamma-Ray Bursts (GRBs) are associated with deaths of Wolf-Rayet stars, the evolutionary path of massive stars to GRBs and the exact nature o…
Which Massive stars are Gamma-Ray Burst Progenitors?
Jelena Petrovic, Norbert Langer, Sung-Chul Yoon +1
The collapsar model for gamma-ray bursts requires three essential ingredients: a massive core, removal of the hydrogen envelope, and enough angular momentum in the core. We study c…
On the evolution of rapidly rotating massive white dwarfs towards supernovae or collapses
Sung-Chul Yoon, Norbert Langer
A recent study by Yoon & Langer (2004a) indicated that the inner cores of rapidly accreting (Mdot > 10^{-7} M_sun/yr) CO white dwarfs may rotate differentially, with a shear rate n…
Stabilization of helium shell burning by rotation in accreting white dwarfs
Sung-Chul Yoon, Norbert Langer
The currently favored scenario for the progenitor evolution of Type Ia supernovae (SNe Ia) presumes that white dwarfs in close binary systems grow to the Chandrasekhar limit via ma…