New treatment of red/blue shifts of emitted photons in terms of Kerr–Newman black hole parameters
Year: 2024
Type: article
Abstract: 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.
Source: Modern Physics Letters A
Authors: Houssam Eddine Trad, Lamine Khodja
Institution: University of Ouargla
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4401815976