Details

Autor(en) / Beteiligte

• Zhang, He-Xu
• Li, Cong
• He, Peng-Zhang
• Fan, Qi-Qi
• Deng, Jian-Bo

Titel

Optical properties of a Brane-World black hole as photons couple to the Weyl tensor

Ist Teil von

• The European physical journal. C, Particles and fields, 2020-05, Vol.80 (5), p.1-11, Article 461

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2020

Link zum Volltext

Quelle

SpringerLink (Online service)

Beschreibungen/Notizen

• In this article, we have investigated the equations of motion of the photons coupled to Weyl tensor by the geometric optics approximation and the corresponding shadow in a Brane-World black hole spacetime. It is shown that there exists a double shadow for a black hole since the coupling photons with different polarization directions propagate along different paths in the spacetime. Furthermore, we discuss the effects of the metric parameter α related to the cosmological constant, X-cold dark matter parameter β and the coupling parameter λ on the umbra (the overlap region of the double shadow) and the penumbra. We also obtain the finite-distance corrections to the deflection angle of light in the Brane-World black hole spacetime as the photons coupled to Weyl tensor by using a recent geometric method.