論文

査読有り
2016年7月

Consistent analytic approach to the efficiency of collisional Penrose process

PHYSICAL REVIEW D
  • Tomohiro Harada
  • ,
  • Kota Ogasawara
  • ,
  • Umpei Miyamoto

94
2
開始ページ
024038
終了ページ
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1103/PhysRevD.94.024038
出版者・発行元
AMER PHYSICAL SOC

We propose a consistent analytic approach to the efficiency of collisional Penrose process in the vicinity of a maximally rotating Kerr black hole. We focus on a collision with arbitrarily high center-of-mass energy, which occurs if either of the colliding particles has its angular momentum fine-tuned to the critical value to enter the horizon. We show that if the fine-tuned particle is ingoing on the collision, the upper limit of the efficiency is (2 + root 3) (2 - root 2) similar or equal to 2.186, while if the fine-tuned particle is bounced back before the collision, the upper limit is (2 + root 3)(2) similar or equal to 13.93. Despite earlier claims, the former can be attained for inverse Compton scattering if the fine-tuned particle is massive and starts at rest at infinity, while the latter can be attained for various particle reactions, such as inverse Compton scattering and pair annihilation, if the fine-tuned particle is either massless or highly relativistic at infinity. We discuss the difference between the present and earlier analyses.


リンク情報
DOI
https://doi.org/10.1103/PhysRevD.94.024038
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000380115100002&DestApp=WOS_CPL
ID情報
  • DOI : 10.1103/PhysRevD.94.024038
  • ISSN : 2470-0010
  • eISSN : 2470-0029
  • Web of Science ID : WOS:000380115100002

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