On black hole surface gravity

@article{77163,
   author = {Pugliese, Daniela and Quevedo, Hernando},
   article_location = {New York (USA)},
   article_number = {5},
   doi = {http://dx.doi.org/10.1140/epjc/s10052-023-11345-w},
   keywords = {force-free magnetosphere;naked singularities;kerr spacetime;cirkular orbits;light-surfaces;elektrodynamics;system;field;spin},
   language = {eng},
   issn = {1434-6044},
   journal = {European Physical Journal C},
   title = {On black hole surface gravity},
   url = {https://link.springer.com/article/10.1140/epjc/s10052-023-11345-w},
   volume = {83},
   year = {2023}
}

TY  - JOUR
ID  - 77163
AU  - Pugliese, Daniela - Quevedo, Hernando
PY  - 2023
TI  - On black hole surface gravity
JF  - European Physical Journal C
VL  - 83
IS  - 5
SP  - "370-1"-"370-42"
EP  - "370-1"-"370-42"
PB  - SPRINGER
SN  - 14346044
KW  - force-free magnetosphere;naked singularities;kerr spacetime;cirkular orbits;light-surfaces;elektrodynamics;system;field;spin
UR  - https://link.springer.com/article/10.1140/epjc/s10052-023-11345-w
N2  - We analyze the properties of the black hole surface gravity by using an alternative approach based upon the use of light surfaces that are represented by certain characteristic frequencies. To this end, we rewrite the Kerr line element in terms of the characteristic frequencies, which allows us to obtain copies of the Kerr geometries (black hole-clusters) as the parameters vary. In particular, we replace the spin parameter a = J/M with the corresponding characteristic frequencies so that the line element describes only black holes. This new representation is particularly adapted to analyze how the surface gravity behaves as the black hole passes from one v state to another. It turns out that the spins a = v3/2M and a = 1/v 2 M for black holes and a/M = v9/8 for naked singularities are of particular relevance for the analysis of the surface gravity properties.
ER  - 

PUGLIESE, Daniela and Hernando QUEVEDO. On black hole surface gravity. \textit{European Physical Journal C}. New York (USA): SPRINGER, 2023, vol.~83, No~5, p.~''370-1''-''370-42'', 42 pp. ISSN~1434-6044. Available from: https://dx.doi.org/10.1140/epjc/s10052-023-11345-w.