\begin{document}$ a=0 $\end{document}, the shape of the BH shadow is a perfect circle; when \begin{document}$ a\neq 0 $\end{document}, the shape is distorted; if the quantum correction parameter \begin{document}$ m=0 $\end{document}, their shapes reduce to the cases of a Schwarzschild BH and Kerr BH, respectively; (3) the degree of distortion of the BH shadow is different for various quantum correction parameters m; with an increase in the parameter m, the boundary of the BH shadow expands; (4) the size of the BH shadow varies greatly with respect to various quantum deformed BHs (n), and the change in BH shadow shape caused by parameter n is similar to that caused by parameter m, which indicates that there is a "degenerate phenomenon" between the two parameters. Because the value of m in actual physics should be very small, the current observations of the event horizon telescope (EHT) cannot distinguish quantum effects from the BH shadow. In future BH shadow measurements, it will be possible to distinguish quantum deformed BHs, which will help to better understand the quantum effects of BHs."> Testing the quantum effects near the event horizon with respect to the black hole shadow -
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