July 26, 2026 article Open access Optical appearance of regularized compact objects without an exterior photon sphere General Relativity and Gravitation DOI: 10.1007/s10714-026-03591-6 Full text (OA) OpenAlex Authors 0 Author list not loaded yet. Cited by 0 stored of 0 References 8 Search Sort Most cited Newest Oldest Patent citations Title Any typearticle review book-chapter conference-paper preprint dissertation book dataset other Any fieldAgricultural and Biological Sciences Arts and Humanities Biochemistry, Genetics and Molecular Biology Business, Management and Accounting Chemical Engineering Chemistry Computer Science Decision Sciences Dentistry Earth and Planetary Sciences Economics, Econometrics and Finance Energy Engineering Environmental Science Health Professions Immunology and Microbiology Materials Science Mathematics Medicine Neuroscience Nursing Pharmacology, Toxicology and Pharmaceutics Physics and Astronomy Psychology Social Sciences Veterinary Open access First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way 2022 The Astrophysical Journal Letters article Physics and Astronomy Astrophysical Phenomena and Observations Open access 1,845 citations First Sagittarius A* Event Horizon Telescope Results. VI. Testing the Black Hole Metric 2022 The Astrophysical Journal Letters article Physics and Astronomy Astrophysical Phenomena and Observations Open access 667 citations First Sagittarius A* Event Horizon Telescope Results. V. Testing Astrophysical Models of the Galactic Center Black Hole 2022 The Astrophysical Journal Letters article Physics and Astronomy Astrophysical Phenomena and Observations Open access 545 citations First Sagittarius A* Event Horizon Telescope Results. III. Imaging of the Galactic Center Supermassive Black Hole 2022 The Astrophysical Journal Letters article Physics and Astronomy Astrophysical Phenomena and Observations Open access 447 citations First Sagittarius A* Event Horizon Telescope Results. II. EHT and Multiwavelength Observations, Data Processing, and Calibration 2022 The Astrophysical Journal Letters article Physics and Astronomy Astrophysical Phenomena and Observations Open access 370 citations First Sagittarius A* Event Horizon Telescope Results. IV. Variability, Morphology, and Black Hole Mass 2022 The Astrophysical Journal Letters article Physics and Astronomy Astrophysical Phenomena and Observations Open access 368 citations Gravitational Test beyond the First Post-Newtonian Order with the Shadow of the M87 Black Hole 2020 Physical Review Letters article Physics and Astronomy Astrophysical Phenomena and Observations Open access 336 citations Characterizing and Mitigating Intraday Variability: Reconstructing Source Structure in Accreting Black Holes with mm-VLBI 2022 The Astrophysical Journal Letters article Physics and Astronomy Astrophysical Phenomena and Observations Open access 38 citations 8 results