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arXiv · 2608.08520

Construction of an analytic multi-component accretion environment and its application to Kerr black hole imaging

Shiyang Hu·Dan Li·Chen Deng·Kejian He·Guansheng He
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Abstract

The construction of accretion environments is fundamental to black hole imaging. From a purely geometric perspective, we construct a novel analytic accretion environment comprising a geometrically thick disk, ring-like bumps with a Gaussian profile, and localized compact emission regions modeled by Gaussian distributions. This environment offers high flexibility, enabling independent adjustments of disk thickness, vertical structure, and the positions and morphologies of localized spots, thereby allowing it to qualitatively mimic high-energy astrophysical phenomena. Applying this model to the Kerr spacetime, we investigate the resulting images via radiative transfer and ray-tracing simulations. The results validate the effectiveness of our accretion model and reveal novel observational signatures of Kerr black holes under multi-component illumination, including multiple bright spots and arc-like structures. This work provides a convenient and fully analytic framework for modeling accretion in curved spacetimes, and offers a new perspective on inferring accretion mechanisms and transient high-energy processes from image features.

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Shiyang Hu, Dan Li, Chen Deng, Kejian He, Guansheng He. 2026-08-09. Construction of an analytic multi-component accretion environment and its application to Kerr black hole imaging. https://arxiv.org/abs/2608.08520

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