2024/05/14 by Joshua Baines, Matt Visser, Baines, Joshua +1
Medicine · Physics and Astronomy · #Advanced Radiotherapy Techniques #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #Medical Imaging Techniques and Applications #Radiation Therapy and Dosimetry
paper · pdf · doi:10.48550/arxiv.2405.08875
openalex publication_date 2024/05/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We exhibit exact analytic, fully explicit, photon escape cones and related silhouettes ("shadows") at arbitrary distance from the extremal Kerr black hole. In contrast to the situation for non-extremal Kerr, where one typically has to resort to either numerical and/or perturbative investigations, the situation for extremal Kerr is amenable to direct analytic investigation.