2 citations · 3 across the 2 of their papers we have counts for
6 papers
Hypernovae, Black-Hole-Forming Supernovae, and First Stars
K. Nomoto, N. Tominaga, H. Umeda +4
Recent studies of core-collapse supernovae have revealed the existence of two distinct classes of massive supernovae (SNe): 1) very energetic SNe (Hypernovae), whose kinetic energy…
Hypernovae and their Nucleosynthesis
Ken'ichi Nomoto, Keiichi Maeda, Hideyuki Umeda +3
We review the characteristics of nucleosynthesis in 'Hypernovae', i.e., core-collapse supernovae with very large explosion energies ($ \gsim 10^{52} $ ergs). The hypernova yields s…
Pop III Hypernova Nucleosynthesis and Abundances in Very Metal-Poor Halo Stars
Hideyuki Umeda, Ken'ichi Nomoto
We calculate evolution and nucleosynthesis in massive Pop III stars with M = 13 ~ 270Msun, and compare the results with abundances of very metal-poor halo stars. The observed abund…
Hypernova Nucleosynthesis and Early Chemical Evolution
Ken'ichi Nomoto, Keiichi Maeda, Hideyuki Umeda
We review the characteristics of nucleosynthesis in 'Hypernovae', i.e., supernovae with very large explosion energies ($ \gsim 10^{52} $ ergs). The hypernova yields compared to tho…
Type Ia Supernova Progenitors, Environmental Effects, and Cosmic Supernova Rates
Ken'ichi Nomoto, Hideyuki Umeda, Izumi Hachisu +3
Relatively uniform light curves and spectral evolution of Type Ia supernovae (SNe Ia) have led to the use of SNe Ia as a ``standard candle'' to determine cosmological parameters, s…
Axion Mass Limits from Cooling Neutron Stars
Hideyuki Umeda, Naoki Iwamoto, Sachiko Tsuruta +2
The thermal evolution of a neutron star is studied by including the energy loss due to axion emission. Two axion models and three types of neutron-star matter equation of state are…