First Sagittarius A* event horizon telescope results. VI. Testing the black hole metric
Astrophysical black holes are expected to be described by the Kerr metric. This is the only
stationary, vacuum, axisymmetric metric, without electromagnetic charge, that satisfies …
stationary, vacuum, axisymmetric metric, without electromagnetic charge, that satisfies …
A review on analytical studies in Gravitational Lensing
In this study, we review some current studies on gravitational lensing for black holes, mainly
in the context of general relativity. We mainly focus on the analytical studies related to …
in the context of general relativity. We mainly focus on the analytical studies related to …
Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A
Horizon-scale images of black holes (BHs) and their shadows have opened an
unprecedented window onto tests of gravity and fundamental physics in the strong-field …
unprecedented window onto tests of gravity and fundamental physics in the strong-field …
First Sagittarius A* event horizon telescope results. V. Testing astrophysical models of the galactic center black hole
In this paper we provide a first physical interpretation for the Event Horizon Telescopeʼs
(EHT) 2017 observations of Sgr A*. Our main approach is to compare resolved EHT data at …
(EHT) 2017 observations of Sgr A*. Our main approach is to compare resolved EHT data at …
First Sagittarius A* event horizon telescope results. IV. Variability, morphology, and black hole mass
In this paper we quantify the temporal variability and image morphology of the horizon-scale
emission from Sgr A*, as observed by the EHT in 2017 April at a wavelength of 1.3 mm. We …
emission from Sgr A*, as observed by the EHT in 2017 April at a wavelength of 1.3 mm. We …
[HTML][HTML] First Sagittarius A* Event Horizon Telescope results. I. The shadow of the supermassive black hole in the center of the Milky Way
First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive
Black Hole in the Center of the Milky Way - IOPscience Skip to content IOP Science home …
Black Hole in the Center of the Milky Way - IOPscience Skip to content IOP Science home …
First Sagittarius A* event horizon telescope results. II. EHT and multiwavelength observations, data processing, and calibration
Abstract We present Event Horizon Telescope (EHT) 1.3 mm measurements of the radio
source located at the position of the supermassive black hole Sagittarius A*(Sgr A*) …
source located at the position of the supermassive black hole Sagittarius A*(Sgr A*) …
Superradiant evolution of the shadow and photon ring of Sgr
Ultralight bosons can affect the dynamics of spinning black holes (BHs) via superradiant
instability, which can lead to a time evolution of the supermassive BH shadow. We study …
instability, which can lead to a time evolution of the supermassive BH shadow. We study …
Comparing equivalent gravities: common features and differences
S Capozziello, V De Falco, C Ferrara - The European Physical Journal C, 2022 - Springer
We discuss equivalent representations of gravity in the framework of metric-affine
geometries pointing out basic concepts from where these theories stem out. In particular, we …
geometries pointing out basic concepts from where these theories stem out. In particular, we …
Orbital motion near Sagittarius A*-Constraints from polarimetric ALMA observations
We report on the polarized light curves of the Galactic Center supermassive black hole
Sagittarius A*, obtained at millimeter wavelength with the Atacama Large Millimeter …
Sagittarius A*, obtained at millimeter wavelength with the Atacama Large Millimeter …