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arXiv · 2408.10150

Accretion disks around magnetically charged black holes in string theory with an Euler-Heisenberg correction

Yu-Hao Jiang·Towe Wang
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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.

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Yu-Hao Jiang, Towe Wang. 2024-08-19. Accretion disks around magnetically charged black holes in string theory with an Euler-Heisenberg correction. https://arxiv.org/abs/2408.10150

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