SPACE seminar: Zi-Liang Wang - "Exploring the role of accretion disk geometry in shaping black hole shadows"

Tuesday 25 Nov 2025, 12:00 → 13:00 Europe/Rome

Aula 4 (San Marcellino)

Speaker: Dr. Zi-Liang Wang (Jiangsu University of Science and Technology, China)

Abstract: We investigate black hole imaging arising from geometrically thick accretion disks in Schwarzschild spacetime. The emitting region is decomposed into a series of one-dimensional luminous segments, each defined by its inclination angle and inner radius, enabling the construction of transfer functions that describe key image components—the direct image, lensing ring, and photon ring. Three regimes are examined: optically thin, optically thick, and partially optically thick disks. This framework may provide a unified treatment of disk geometry and viewing inclination.

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