論文

査読有り
2016年2月

High efficiency of collisional Penrose process requires heavy particle production

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

93
4
開始ページ
044054
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.93.044054
出版者・発行元
AMER PHYSICAL SOC

The center-of-mass energy of two particles can become arbitrarily large if they collide near the event horizon of an extremal Kerr black hole, which is called the Banados-Silk-West effect. We consider such a high-energy collision of two particles which started from infinity and follow geodesics in the equatorial plane and investigate the energy extraction from such a high-energy particle collision and the production of particles in the equatorial plane. We analytically show that, on the one hand, if the produced particles are as massive as the colliding particles, the energy-extraction efficiency is bounded by 2.19 approximately. On the other hand, if a very massive particle is produced as a result of the high-energy collision, which has negative energy and necessarily falls into the black hole, the upper limit of the energy-extraction efficiency is increased to (2 + root 3)(2) similar or equal to 13.9. Thus, higher efficiency of the energy extraction, which is typically as large as 10, provides strong evidence for the production of a heavy particle.


リンク情報
DOI
https://doi.org/10.1103/PhysRevD.93.044054
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000370806200002&DestApp=WOS_CPL
URL
http://www.scopus.com/inward/record.url?eid=2-s2.0-84960192950&partnerID=MN8TOARS
ID情報
  • DOI : 10.1103/PhysRevD.93.044054
  • ISSN : 2470-0010
  • eISSN : 2470-0029
  • ORCIDのPut Code : 25712412
  • SCOPUS ID : 84960192950
  • Web of Science ID : WOS:000370806200002

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