19 citations · 21 across the 2 of their papers we have counts for
3 papers
gr-qc2019★ 2 cited
Energy self-extraction of a Kerr black hole through its frame-dragged force-free magnetosphere
Isao Okamoto, Yoogeun Song
It is shown that when only the condition} is satisfied, the Kerr black hole frame-drags its surrounding force-free magnetosphere with the field-line-angular…
astro-ph2005★ 19 cited
Electromagnetic extraction of energy from Kerr black holes
Isao Okamoto
We elucidate the `right' process for energy extraction from Kerr black holes through `FFDE' magnetospheres, free from causality violation. It is shown that the magnetosphere of a K…
gr-qc1994
Thermodynamics of a black hole in a cavity
Renaud Parentani, Joseph Katz, Isao Okamoto
We present a unified thermodynamical description of the configurations consisting on self-gravitating radiation with or without a black hole. We compute the thermal fluctuations an…