Blandford-Znajek mechanism in the general stationary axially-symmetric black-hole spacetime

@article{57761,
   author = {Konoplya, Roman and Kunz, J. and Zhidenko, A.},
   article_location = {GB - Spojené království Velké Británie a},
   article_number = {12},
   doi = {http://dx.doi.org/10.1088/1475-7516/2021/12/002},
   keywords = {GR black holes;gravity;magnetic fields;modified gravity},
   language = {eng},
   issn = {1475-7516},
   journal = {Journal of Cosmology and Astroparticle Physics},
   title = {Blandford-Znajek mechanism in the general stationary axially-symmetric black-hole spacetime},
   url = {https://iopscience.iop.org/article/10.1088/1475-7516/2021/12/002},
   volume = {2021},
   year = {2021}
}

TY  - JOUR
ID  - 57761
AU  - Konoplya, Roman - Kunz, J. - Zhidenko, A.
PY  - 2021
TI  - Blandford-Znajek mechanism in the general stationary axially-symmetric black-hole spacetime
JF  - Journal of Cosmology and Astroparticle Physics
VL  - 2021
IS  - 12
SP  - "002-1"-"002-16"
EP  - "002-1"-"002-16"
SN  - 14757516
KW  - GR black holes;gravity;magnetic fields;modified gravity
UR  - https://iopscience.iop.org/article/10.1088/1475-7516/2021/12/002
N2  - We consider the Blandford-Znajek process of electromagnetic extraction of energy from a general axially symmetric asymptotically flat slowly rotating black hole. Using the general parametrization of the black-hole spacetime we construct formulas for the flux of the magnetic field and the rate of energy extraction, which are valid not only for the Kerr spacetime, but also for its arbitrary axially symmetric deformations. We show that in the dominant order these quantities depend only on a single deformation parameter, which relates the spin frequency of a black hole with its rotation parameter.
ER  - 

KONOPLYA, Roman, J. KUNZ and A. ZHIDENKO. Blandford-Znajek mechanism in the general stationary axially-symmetric black-hole spacetime. \textit{Journal of Cosmology and Astroparticle Physics}. GB - Spojené království Velké Británie a, 2021, vol.~2021, No~12, p.~''002-1''-''002-16'', 16 pp. ISSN~1475-7516. Available from: https://dx.doi.org/10.1088/1475-7516/2021/12/002.