[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 …

Testing the rotational nature of the supermassive object M87* from the circularity and size of its first image

C Bambi, K Freese, S Vagnozzi, L Visinelli - Physical Review D, 2019 - APS
The Event Horizon Telescope (EHT) collaboration has recently released the first image of a
black hole (BH), opening a new window onto tests of general relativity in the strong field …

Silhouettes of invisible black holes

VI Dokuchaev, NO Nazarova - Physics-Uspekhi, 2020 - iopscience.iop.org
In general relativity, isolated black holes are invisible due to the infinitely large redshift of
photons propagating from the event horizon to a remote observer. However, the dark …

Probing a non-linear electrodynamics black hole with thin accretion disk, shadow, and deflection angle with M87* and Sgr A* from EHT

A Uniyal, RC Pantig, A Övgün - Physics of the Dark Universe, 2023 - Elsevier
Non-linear interaction between the electromagnetic fields (EMF) occurs when vacuum
polarization in quantum electrodynamics (QED) happens. The field of non-linear …

Magnetically charged black holes from non-linear electrodynamics and the Event Horizon Telescope

A Allahyari, M Khodadi, S Vagnozzi… - Journal of Cosmology …, 2020 - iopscience.iop.org
Non-linear electrodynamics (NLED) theories are well-motivated extensions of QED in the
strong field regime, and have long been studied in the search for regular black hole (BH) …

Hunting for extra dimensions in the shadow of M87

S Vagnozzi, L Visinelli - Physical Review D, 2019 - APS
The Event Horizon Telescope has recently provided the first image of the dark shadow
around the supermassive black hole M87*. The observation of a highly circular shadow …

Investigating the connection between generalized uncertainty principle and asymptotically safe gravity in black hole signatures through shadow and quasinormal …

G Lambiase, RC Pantig, DJ Gogoi, A Övgün - The European Physical …, 2023 - Springer
The links between the deformation parameter β of the generalized uncertainty principle
(GUP) to the two free parameters ω^ and γ of the running Newtonian coupling constant of …

Testing the nature of Gauss–Bonnet gravity by four-dimensional rotating black hole shadow

SW Wei, YX Liu - The European Physical Journal Plus, 2021 - Springer
The recent discovery of the novel four-dimensional static and spherically symmetric Gauss–
Bonnet black hole provides a promising bed to test Gauss–Bonnet gravity by using …

Imaging compact boson stars with hot spots and thin accretion disks

JL Rosa, CFB Macedo, D Rubiera-Garcia - Physical Review D, 2023 - APS
In this work we consider the observational properties of compact boson stars with self-
interactions orbited by isotropically emitting (hot-spot) sources and optically thin accretion …

Quasiperiodic oscillations, weak field lensing and shadow cast around black holes in Symmergent gravity

J Rayimbaev, RC Pantig, A Övgün, A Abdujabbarov… - Annals of Physics, 2023 - Elsevier
In this work, we performed a systematic study of the Symmergent gravity (SG) in a black hole
(BH) environment. Being an emergent gravity model in which gravity emerges to restore the …