443 citations · 3.4k across the 77 of their papers we have counts for
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Instability of Population III Black Hole Accretion Disks
Ken Ohsuga, Hajime Susa, Yosuke Uchiyama
We investigate the stability of black hole accretion disks in a primordial environment (POP III disks for short), by solving the vertical structure of optically thick disks, includ…
Why Is Supercritical Disk Accretion Feasible?
Ken Ohsuga, Shin Mineshige
Although the occurrence of steady supercritical disk accretion onto a black hole has been speculated about since the 1970s, it has not been accurately verified so far. For the firs…
Two-dimensional Radiation-hydrodynamic Model for Supercritical Disk Accretion Flows onto Neutron Stars
Ken Ohsuga
We performed two-dimensional radiation hydrodynamic simulations of supercritical accretion flows around neutron stars (NSs). In contrast with the accretion flows onto black holes (…
Feedback from supercritical disk accretion flows; Two-dimensional radiation-hydrodynamic simulations of stable and unstable disks with radiatively driven outflows
K. Ohsuga
The supercritical disk accretion flow with radiatively driven outflows is studied based on two-dimensional radiation-hydrodynamic simulations for a wide range of the mass input rat…
Multi-dimensional Treatment of Photon Emission from Accretion Disks around Black Holes
Kazunori Kohri, Ken Ohsuga, Ramesh Narayan
We consider photon emission from a supercritical accretion disk in which photons in the inner regions are trapped and advected in towards the center. Such disks are believed to be…
Black hole accretion: theoretical limits and observational implications
D. Heinzeller, W. J. Duschl, S. Mineshige +1
Recently, the issue of the role of the Eddington limit in accretion discs became a matter of debate. While the classical (spherical) Eddington limit is certainly an over-simplifica…