期刊
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS
卷 2020, 期 1, 页码 -出版社
OXFORD UNIV PRESS INC
DOI: 10.1093/ptep/ptz143
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资金
- Japan Society for the Promotion of Science (JSPS) KAKENHI [JP17H06359, JP19K03857]
We analyze the collisional Penrose process between a particle on the innermost stable circular orbit (ISCO) orbit around an extreme Kerr black hole and a particle impinging from infinity. We consider both cases with non-spinning and spinning particles. We evaluate the maximal efficiency, eta(max) = (extracted energy)/(input energy), for the elastic collision of two massive particles and for the photoemission process, in which the ISCO particle will escape to infinity after a collision with a massless impinging particle. For non-spinning particles, the maximum efficiency is eta(max) approximate to 2.562 for the elastic collision and eta(max) approximate to 7 for the photoemission process. For spinning particles we obtain the maximal efficiency ti max 8.442 for the elastic collision and eta(max) approximate to 12.54 for the photoemission process.
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