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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2402.02221 |
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Table of Contents:
- This study presents a method for determining the mass, angular momentum, and charge of Kerr-Newman black holes by analyzing the red/blue shifts of photons emitted by geodesic neutral massive objects. We derive the equations of motion for photons in the Kerr-Newman spacetime. We obtain explicit expressions for redshift/blueshift photons emitted by an object orbiting a Kerr-Newman black hole. Finally, using the Boyer-Lindquist coordinates, we express the red/blue shifts in terms of the metric parameters.