86 citations · 161 across the 5 of their papers we have counts for
5 papers
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…
On the population III binary black hole mergers beyond the pair-instability mass gap
Kotaro Hijikawa, Ataru Tanikawa, Tomoya Kinugawa +2
We perform a binary population synthesis calculation incorporating very massive population (Pop.) III stars up to 1500 , and investigate the nature of binary black hole (B…
Observability of inflated companion stars after supernovae in massive binaries
Misa Ogata, Ryosuke Hirai, Kotaro Hijikawa
We carry out a systematic study of the response of companion stars in massive binaries after being impacted by supernova ejecta. A total of 720 1D stellar evolution calculations ar…
Population III Binary Black Holes: Effects of Convective Overshooting on Formation of GW190521
Ataru Tanikawa, Tomoya Kinugawa, Takashi Yoshida +2
GW190521 is a merger of two black holes (BHs), wherein at least one BH lies within the pair-instability (PI) mass gap, and it is difficult to form because of the effects of PI supe…
The rate of iPTF 14gqr like ultra-stripped supernovae and binary evolution leading to double neutron star formation
Kotaro Hijikawa, Tomoya Kinugawa, Takashi Yoshida +1
Double neutron star (DNS) systems are produced from massive binaries. A supernova (SN) explosion of an extremely stripped star is expected to occur at the final stage of DNS format…