Traditional research on black hole formulas relies on complex tensor calculations and quantum field theory. In this paper, we derive the core black hole formulas (including key expressions such as photon sphere radius, most stable circular orbit radius, and Schwarzschild radius) using only university-level physics and advanced mathematics, without the need for complex tensors or quantum field theory. Additionally, we optimize the ring singularity radius formula of Kerr black holes by incorporating the α’ order correction from string theory. This work not only lowers the learning barrier for black hole theory but also improves the description of the core structure of Kerr black holes, facilitating the popularization of related research.
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Share and Cite
Wang, Z. (2025) Simple Derivation of Black Hole Core Formulas and Correction of Ring Singularity Radius via String Theory. Scientific Research Bulletin, 2(5), 35-43.