155 citations · 894 across the 30 of their papers we have counts for
6 papers · 1 filter
Growth of Massive Disk and Early Disk Fragmentation in the Primordial Star Formation
Kazutaka Kimura, Takashi Hosokawa, Kazuyuki Sugimura
Recent high-resolution simulations demonstrate that disks around primordial protostars easily fragment in the accretion phase before the protostars accrete less than a solar mass.…
Disk fragmentation and intermittent accretion onto supermassive stars
Ryoki Matsukoba, Eduard I. Vorobyov, Kazuyuki Sugimura +3
Supermassive stars (SMSs) with are candidate objects for the origin of supermassive black holes observed at redshift >6. They are supposed to f…
Star cluster formation and cloud dispersal by radiative feedback: dependence on metallicity and compactness
Hajime Fukushima, Hidenobu Yajima, Kazuyuki Sugimura +3
We study star cluster formation in various environments with different metallicities and column densities by performing a suite of three-dimensional radiation hydrodynamics simulat…
Structure and Instability of the Ionization Fronts around Moving Black Holes
Kazuyuki Sugimura, Massimo Ricotti
In this paper we focus on understanding the physical processes that lead to stable or unstable ionization fronts (I-fronts) observed in simulations of moving black holes (BHs). The…
Gaseous dynamical friction under radiative feedback: do intermediate-mass black holes speed up or down?
Daisuke Toyouchi, Takashi Hosokawa, Kazuyuki Sugimura +1
Coalescence of intermediate-mass black holes (IMBHs) as a result of the migration toward galactic centers via dynamical friction may contribute to the formation of supermassive BHs…
The Birth of a Massive First-Star Binary
Kazuyuki Sugimura, Tomoaki Matsumoto, Takashi Hosokawa +2
We study the formation of massive Population III binary stars using a newly developed radiation hydrodynamics code with the adaptive mesh refinement and adaptive ray-tracing method…