Scalar absorption by charged rotating black holes
Luiz C. S. Leite, Carolina L. Benone, and Lu\'is C. B. Crispino
TL;DR
This paper numerically analyzes how charged rotating black holes absorb scalar waves, examining the effects of charge and spin on absorption spectra and comparing results with analytical predictions.
Contribution
It provides new numerical insights into scalar absorption by Kerr-Newman black holes, including the influence of charge and angular momentum.
Findings
Absorption cross section varies with black hole charge and spin.
Numerical results agree with analytical limits at high and low frequencies.
The study enhances understanding of wave interactions with charged rotating black holes.
Abstract
We compute numerically the absorption cross section of planar massless scalar waves impinging upon a Kerr-Newman black hole with different incidence angles. We investigate the influence of the black hole electric charge and angular momentum in the absorption spectrum, comparing our numerical computations with analytical results for the limits of high and low frequency.
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