5 papers
Gaia's Detectability of Black Hole-Main Sequence Star Binaries Formed in Open Clusters
Minori Shikauchi, Jun Kumamoto, Ataru Tanikawa +1
Black hole-main sequence star (BH-MS) binaries are one of the targets of the future data releases of the astrometric satellite {\it Gaia}. They are supposed to be formed in two mai…
Merger rate density of binary black holes formed in open clusters
Jun Kumamoto, Michiko S. Fujii, Ataru Tanikawa
Several binary black holes (BBHs) have been observed using gravitational wave detectors. For the formation mechanism of BBHs, two main mechanisms, isolated binary evolution and dyn…
Formation rate of LB-1-like systems through dynamical interactions
Ataru Tanikawa, Tomoya Kinugawa, Jun Kumamoto +1
We estimate formation rates of LB-1-like systems through dynamical interactions in the framework of the theory of stellar evolution before the discovery of the LB-1 system. The LB-…
Gravitational-Wave Emission from Binary Black Holes Formed in Open Clusters
Jun Kumamoto, Michiko S. Fujii, Ataru Tanikawa
In order to investigate the formation rate of binary black holes (BBHs) in stellar clusters with a mass comparable to open clusters, we performed a series of direct -body simula…
Global Spiral Arms Formation by Non-linear Interaction of Wakelets
Jun Kumamoto, Masafumi Noguchi
The formation and evolution of galactic spiral arms is not yet clearly understood despite many analytic and numerical work. Recently, a new idea has been proposed that local densit…