[PDF][PDF] Fundamental physics opportunities with the next-generation event horizon telescope

D Ayzenberg, L Blackburn, R Brito… - arXiv preprint arXiv …, 2023 - researchgate.net
Abstract The Event Horizon Telescope (EHT) Collaboration recently published the first
images of the supermassive black holes in the cores of the Messier 87 and Milky Way …

Constraining spherically symmetric metrics by the gap between photon rings

F Aratore, OY Tsupko, V Perlick - Physical Review D, 2024 - APS
Gravitational lensing of luminous matter that surrounds a black hole or some other
sufficiently compact object produces an infinite sequence of images. Besides the direct (or …

Analytical perturbations of relativistic images in Kerr space-time

F Aratore, V Bozza - arXiv preprint arXiv:2403.10169, 2024 - arxiv.org
Light rays passing very close to black holes may wind several times before escaping. For
any given electromagnetic source around the black hole, a distant observer would thus …

The shadow of Kerr-Newman black hole surrounded by perfect fluid matter in Rastall gravity

J Ma, J Wang, Q Gao, L Qin - Physica Scripta, 2024 - iopscience.iop.org
We investigate analytically the apparent shadows cast by Kerr-Newman black hole with
surrounding perfect fluid matter in Rastall gravity theory. With the help of the Hamilton …