Polarized image of a Schwarzschild black hole with a thin accretion disk as photon couples to Weyl tensor

Jiliang Jing; Songbai Chen; Xin Qin; Zelin Zhang

Polarized image of a Schwarzschild black hole with a thin accretion disk as photon couples to Weyl tensor

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arxiv 2106.07981 v2 pith:4SG43BPV submitted 2021-06-15 gr-qc

Zelin Zhang , Songbai Chen , Xin Qin , Jiliang Jing This is my paper · ORCID

classification gr-qc

keywords polarizedblackholediskphotonthinaccretioncoupling

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We have studied polarized image of a Schwarzschild black hole with an equatorial thin accretion disk as photon couples to Weyl tensor. The birefringence of photon originating from the coupling affect the black hole shadow, the thin disk pattern and its luminosity distribution. We also analyze the observed polarized intensity in the sky plane. The observed polarized intensity in the bright region is stronger than that in the darker region. The stronger effect of the coupling on the observed polarized vector appears only in the bright region close to black hole. These features in the polarized image could help us to understand black hole shadow, the thin accretion disk and the coupling between photon and Weyl tensor.

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Polarization-dependent observational signatures of Weyl-coupled photons around a black hole
gr-qc 2026-07 conditional novelty 5.5 of 10

Weyl-coupled photons on Schwarzschild produce a polarization-split double shadow (62% edge separation at α/M²=0.75) and a parity-protected backward birefringence signal that vanishes at α=0.

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