148 citations · 3k across the 69 of their papers we have counts for
3 papers · 1 filter
On the population III binary black hole mergers with intermediate mass black holes: dependence on common envelope parameter
Kotaro Hijikawa, Tomoya Kinugawa, Ataru Tanikawa +2
The current gravitational wave (GW) detectors have successfully observed many binary compact objects, and the third generation ground-based GW detectors such as Einstein telescope…
Stability analysis of supermassive primordial stars: a new mass range for general relativistic instability supernovae
Chris Nagele, Hideyuki Umeda, Koh Takahashi +2
Observed supermassive black holes in the early universe have several proposed formation channels, in part because most of these channels are difficult to probe. One of the more pro…
Stellar models of Betelgeuse constrained using observed surface conditions
Tianyin Luo, Hideyuki Umeda, Takashi Yoshida +1
We study stellar models for Betelgeuse using the HR diagram and surface abundances as observational constraints. Previous studies on Betelgeuse have not systematically investigated…