ABRAMOWICZ, Marek. Extracting black-hole rotational energy: The generalized Penrose process. Physical Review D. US - Spojené státy americké, 2014, roč. 89, č. 2, s. "024041-1"-"024041-24", 24 s. ISSN 1550-7998. Dostupné z: https://dx.doi.org/10.1103/PhysRevD.89.024041. |
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@article{43590, author = {Abramowicz, Marek}, article_location = {US - Spojené státy americké}, article_number = {2}, doi = {http://dx.doi.org/10.1103/PhysRevD.89.024041}, keywords = {Penrose process}, language = {eng}, issn = {1550-7998}, journal = {Physical Review D}, title = {Extracting black-hole rotational energy: The generalized Penrose process}, url = {https://journals.aps.org/prd/abstract/10.1103/PhysRevD.89.024041}, volume = {89}, year = {2014} }
TY - JOUR ID - 43590 AU - Abramowicz, Marek PY - 2014 TI - Extracting black-hole rotational energy: The generalized Penrose process JF - Physical Review D VL - 89 IS - 2 SP - "024041-1"-"024041-24" EP - "024041-1"-"024041-24" SN - 15507998 KW - Penrose process UR - https://journals.aps.org/prd/abstract/10.1103/PhysRevD.89.024041 N2 - In the case involving particles, the necessary and sufficient condition for the Penrose process to extract energy from a rotating black hole is absorption of particles with negative energies and angular momenta. No torque at the black-hole horizon occurs. In this article we consider the case of arbitrary fields or matter described by an unspecified, general energy-momentum tensor T_{mu nu} and show that the necessary and sufficient condition for extraction of a black hole?s rotational energy is analogous to that in the mechanical Penrose process: absorption of negative energy and negative angular momentum. We also show that a necessary condition for the Penrose process to occur is for the Noether current (the conserved energy-momentum density vector)to be spacelike or past directed (timelike or null) on some part of the horizon. In the particle case, our general criterion for the occurrence of a Penrose process reproduces the standard result. In the case of relativistic jet-producin ER -
ABRAMOWICZ, Marek. Extracting black-hole rotational energy: The generalized Penrose process. \textit{Physical Review D}. US - Spojené státy americké, 2014, roč.~89, č.~2, s.~''024041-1''-''024041-24'', 24 s. ISSN~1550-7998. Dostupné z: https://dx.doi.org/10.1103/PhysRevD.89.024041.
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