48 citations · 211 across the 17 of their papers we have counts for
3 papers · 1 filter
Top-heavy stellar mass distribution in galactic nuclei inferred from the universally high abundance ratio of [Fe/Mg]
Daisuke Toyouchi, Kohei Inayoshi, Miho N. Ishigaki +1
Recent observations of active galactic nuclei (AGNs) have shown a high Fe~II/Mg~II line-flux ratio in their broad-line regions, nearly independent of redshift up to .…
Rapid growth of seed black holes during early bulge formation
Kohei Inayoshi, Riouhei Nakatani, Daisuke Toyouchi +3
We study the early growth of massive seed black holes (BHs) via accretion in protogalactic nuclei where the stellar bulge component is assembled, performing axisymmetric two-dimens…
Hunting isolated neutron stars with proper motions from wide-area optical surveys
Daisuke Toyouchi, Kenta Hotokezaka, Masahiro Takada
High-velocity neutron stars (HVNSs) that were kicked out from their birth location can be potentially identified with their large proper motions, and possibly with large parallax,…