2.2k citations · 21.5k across the 170 of their papers we have counts for
4 papers · 2 filters
Detecting Primordial Stars
Evan Scannapieco, Andrea Ferrara, Alexander Heger +3
We study the detectability of primordial metal-free stars. Cosmological enrichment is a local process that takes place over an extended redshift range. While the duration of this t…
The Progenitor Stars of Gamma-Ray Bursts
Stan Woosley, Alexander Heger
Those massive stars that, during their deaths, give rise to gamma-ray bursts (GRBs) must be endowed with an unusually large amount of angular momentum in their inner regions, one t…
The Detectability of Pair-Production Supernovae at z < 6
Evan Scannapieco, Piero Madau, Stan Woosley +2
Nonrotating, zero metallicity stars with initial masses 140 < M < 260 solar masses are expected to end their lives as pair-production supernovae (PPSNe), in which an electron-posit…
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…