A proof that dyonic-like dilatonic black holes have a unique innermost stable circular orbit, plus explicit ISCO formulas for selected values of the dilaton coupling parameter.
Extremal dilatonic black holes in 4D Gauss-Bonnet gravity
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abstract
This is a report of our recent investigation on the extremal dilatonic black holes in four dimensional Gauss-Bonnet gravity. We found that a global solution can exist only when the dilaton coupling is less than a critical value which can be determined numerically. Moreover, the black hole horizon is stretched by the Gauss-Bonnet correction and the entropy is twice the value given by Bekenstein-Hawking formula.
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gr-qc 1years
2024 1verdicts
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Stability Analysis of Circular Geodesics in Dyonic Dilatonic Black Hole Spacetimes
A proof that dyonic-like dilatonic black holes have a unique innermost stable circular orbit, plus explicit ISCO formulas for selected values of the dilaton coupling parameter.