31 citations · 114 across the 11 of their papers we have counts for
11 papers
Tree-ring structure of Galactic bar resonance in N-body simulations
Rimpei Chiba, Michiko Fujii, Junichi Baba +2
We study the structure and evolution of the galactic bar's resonant phase-space in self-consistent N-body simulations of the Milky Way, with and without perturbations from the Sagi…
SIRIUS: The relation between the diversity of dwarf galaxies and their formation histories
Chi-Hong Lin, Michiko S Fujii, Takayuki R Saitoh +1
Low-mass dwarf galaxies () are fundamental cosmological building blocks, yet the physical processes driving their structural diversity remain…
On the Formation of GW231123 in Population III Star Clusters
Shuai Liu, Long Wang, Ataru Tanikawa +2
GW231123 is a binary black hole merger whose primary component lies within or above the pair-instability mass gap, while the secondary component falls within this gap. The standard…
GW231123 Formation from Population III Stars: Isolated Binary Evolution
Ataru Tanikawa, Shuai Liu, WeiWei Wu +2
GW231123 is a merger of two black holes (BHs) with estimated masses exceeding , making them the most massive BHs discovered to date via gravitational wave (GW…
Double Compact Binary Merger Rate Density in Open Star Clusters: Black Holes, Neutron Stars, and White Dwarfs
Savannah Cary, Michiko Fujii, Long Wang +1
Studying compact-object binary mergers in star clusters is crucial for understanding stellar evolution and dynamical interactions in galaxies. Open clusters in particular are more…
Pair-Instability Gap Black Holes in Population III Star Clusters: Pathways, Dynamics, and Gravitational Wave Implications
Weiwei Wu, Long Wang, Shuai Liu +3
The detection of the gravitational wave (GW) event GW190521 raises questions about the formation of black holes within the pair-instability mass gap (PIBHs). We propose that Popula…
Hidden in Pixels. I. Discovery of dual "little red dots" indicates excess clustering on kilo-parsec scales
Takumi S. Tanaka, John D. Silverman, Kazuhiro Shimasaku +56
``Little Red Dots'' (LRDs) are an abundant high-redshift population newly discovered by the James Webb Space Telescope (JWST) and considered to be an early growth phase of supermas…
Compact Binary Formation in Open Star Clusters III: Probability of Binary Black Holes Hidden in Gaia Black Hole Binary
Ataru Tanikawa, Long Wang, Michiko S. Fujii +3
The Gaia mission and its follow-up observations have discovered a few candidates of non-interacting single black holes (BHs) and visible stars, Gaia BH1, BH2, and BH3, collectively…
The impact of primordial binary on the dynamical evolution of intermediate massive star clusters
Long Wang, Ataru Tanikawa, Michiko S. Fujii
Observations found that star clusters contain a large fraction of binaries. Tight binaries are an important heating source that influences the long-term dynamical evolution of star…
The origin of S-stars and a young stellar disk: distribution of debris stars of a sinking star cluster
Michiko Fujii, Masaki Iwasawa, Yoko Funato +1
Within the distance of 1 pc from the Galactic center (GC), more than 100 young massive stars have been found. The massive stars at 0.1-1 pc from the GC are located in one or two di…
Evolution of Star Clusters near the Galactic Center: Fully Self-consistent N-body Simulations
M. Fujii, M. Iwasawa, Y. Funato +1
We have performed fully self-consistent -body simulations of star clusters near the Galactic center (GC). Such simulations have not been performed because it is difficult to per…