30 citations · 30 across the 2 of their papers we have counts for
3 papers
astro-ph.GA2024
Electromagnetic Energy Extraction in Kerr Black Holes through Frame-Dragging Magnetospheres
Isao Okamoto, Toshio Uchida, Yoogeun Song
It is argued that the zero-angular-momentum-observers (ZAMOs) circulating with the frame-dragging-angular-velocity plays a leading part in energy extraction. When the condition…
astro-ph2000★ 30 cited
Fluctuations in Isothermal Spheres
Joseph Katz, Isao Okamoto
Isolated isothermal spheres of N gravitationally interacting points with equal mass are believed to be stable when density contrasts do not exceed 709. That stability limit does, h…
gr-qc1994
A comment on fluctuations and stability limits with application to superheated black holes
I. Okamoto, J. Katz, R. Parentani
We point out that, contrary to signs of heat capacities, thermodynamic fluctuations are simply and unequivocally related to onset of instabilities that show up near critical points…