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Effect of nonlinear electrodynamics on shadows of slowly rotating black holes*

Jiuyang Tang Yunqi Liu; Wei-Liang Qian; Rui-Hong Yue

Chinese Physics C v.47, n.2, art. 025105, p.1-11, 2023

Beijing IOP Science 2023

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  • Título:
    Effect of nonlinear electrodynamics on shadows of slowly rotating black holes*
  • Autor: Jiuyang Tang
  • Yunqi Liu; Wei-Liang Qian; Rui-Hong Yue
  • Assuntos: BURACOS NEGROS; COSMETOLOGIA; Nonlinear Electrodynamics; Black Hole Shadow; Slowly Rotating Black Holes
  • É parte de: Chinese Physics C v.47, n.2, art. 025105, p.1-11, 2023
  • Notas: Disponível em: https://doi.org/10.1088/1674-1137/ac9fba. Acesso em: 26 out. 2023
  • Descrição: In this study, we investigate the effect of nonlinear electrodynamics on the shadows of charged, slowly rotating black holes with the presence of a cosmological constant. Rather than the null geodesic of the background black hole spacetime, the trajectory of a photon, as a perturbation of the nonlinear electrodynamic field, is governed by an effective metric. The latter can be derived by analyzing the propagation of a discontinuity of the electromagnetic waveform. Subsequently, the image of the black hole and its shadow can be evaluated using the backward raytracing technique. We explore the properties of the resultant black hole shadows of two different scenarios of nonlinear electrodynamics, namely, the logarithmic and exponential forms. In particular, the effects of nonlinear electrodynamics on the optical image are investigated, as well as the image's dependence on other metric parameters, such as the black hole spin and charge. The resulting black hole image and shadow display rich features that potentially lead to observational implications.
  • Editor: Beijing IOP Science
  • Data de criação/publicação: 2023
  • Formato: art. 025105, p. 1-10.
  • Idioma: Inglês

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