Accretion disks around magnetically charged black holes in string theory with an Euler-Heisenberg correction
General Relativity and Quantum Cosmology
2025-03-13 v2
Abstract
A relativistic model of geometrically thin and optically thick accretion disks is worked out for a class of magnetically charged black holes, which are solutions to the Einstein-Maxwell-dilaton theory with a dilaton-coupled Euler-Heisenberg correction. Constraints on black hole parameters are derived from the subextremality condition and energy conditions. The Keplerian orbits, the time-averaged energy flux, the local temperature, the specific luminosity and the conversion efficiency of accreting mass into radiation are obtained and compared with Schwarzschild and Gibbons-Maeda-Garfinkle-Horowitz-Strominger black holes.
Keywords
Cite
@article{arxiv.2408.10150,
title = {Accretion disks around magnetically charged black holes in string theory with an Euler-Heisenberg correction},
author = {Yu-Hao Jiang and Towe Wang},
journal= {arXiv preprint arXiv:2408.10150},
year = {2025}
}
Comments
11 pages, 9 figures. This version corrects an error in Figure 9 of the published version