Photon trajectories in an asymmetric Majumdar-Papapetrou spacetime

Authors

  • Jhon Delo L. Procurato ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Sean C. Fortuna ⋅ PH National Institute of Physics, University of the Philippines Diliman
  • Michael Francis Ian G. Vega II ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

We study the motion of a photon that starts from the midpoint of two extremely charged stationary black holes. We investigate how the initial launching angle α and the mass of black holes determines the fate of the photon. We find that varying the mass ratio of the black holes modifies the fate of a specific photon trajectory. Furthermore, we present an exit basin diagram that depicts the final destination of a photon trajectory for a given initial condition. This basin diagram possesses a Cantor-like fractal structure that indicates chaos in the photon trajectories. Lastly, we calculate the proportion of trapped and free photons for all values of initial launching angle α with varying mass ratio. We find that the fraction of photon escapes is relatively insensitive to the mass ratio.

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Article ID

SPP-2023-1G-06

Section

Cosmology and Astrophysics

Published

2023-07-08

How to Cite

[1]
JDL Procurato, SC Fortuna, and MFIG Vega, Photon trajectories in an asymmetric Majumdar-Papapetrou spacetime, Proceedings of the Samahang Pisika ng Pilipinas 41, SPP-2023-1G-06 (2023). URL: https://proceedings.spp-online.org/article/view/SPP-2023-1G-06.