First Sagittarius A* Event Horizon Telescope Results. VIII. Physical Interpretation of the Polarized Ring

K Akiyama, A Alberdi, W Alef, JC Algaba… - The Astrophysical …, 2024 - iopscience.iop.org
In a companion paper, we present the first spatially resolved polarized image of Sagittarius
A* on event horizon scales, captured using the Event Horizon Telescope, a global very long …

Energy extraction from a Kerr black hole via magnetic reconnection within the plunging region

B Chen, Y Hou, J Li, Y Shen - Physical Review D, 2024 - APS
Magnetic reconnection within a highly magnetized plasma has been seen as a viable
mechanism to extract the energy from a rotating black hole, as it can generate negative …

Exploring nonlinear electrodynamics theories: Shadows of regular black holes and horizonless ultracompact objects

RK Walia - Physical Review D, 2024 - APS
In the Einstein-Maxwell theory with nonlinear electrodynamics (NED) fields, the singularity
problem in general relativity is potentially resolved, leading to regular black hole solutions …

The japanese vision for the black hole explorer mission

K Akiyama, K Niinuma, K Hada, A Doi… - Space Telescopes …, 2024 - spiedigitallibrary.org
The Black Hole Explorer (BHEX) is a next-generation space very long baseline
interferometry (VLBI) mission concept that will extend the ground-based millimeter …

Hybrid GRMHD and force-free simulations of black hole accretion

A Chael - Monthly Notices of the Royal Astronomical Society, 2024 - academic.oup.com
We present a new approach for stably evolving general relativistic magnetohydrodynamic
(GRMHD) simulations in regions where the magnetization becomes large. GRMHD codes …

Measuring Black Hole Light Echoes with Very Long Baseline Interferometry

GN Wong, L Medeiros… - The Astrophysical …, 2024 - iopscience.iop.org
Light passing near a black hole can follow multiple paths from an emission source to an
observer due to strong gravitational lensing. Photons following different paths take different …

Prospects for the Detection of the Sgr A* Photon Ring with Next-generation Event Horizon Telescope Polarimetry

KM Shavelle, DCM Palumbo - The Astrophysical Journal Letters, 2024 - iopscience.iop.org
Abstract The Event Horizon Telescope (EHT) has imaged two supermassive black holes,
Messier 87*(M87*) and Sagittarius A*(Sgr A*), using very-long-baseline interferometry …

Energy extraction from a rotating black hole via magnetic reconnection: the plunging bulk plasma and orientation angle

Y Shen, HY YuChih, B Chen - Physical Review D, 2024 - APS
Magnetic reconnection provides a new avenue to extract energy from a rotating black hole in
astrophysical scenarios. There have been many works studying the feasibility of extracting …

Prospects of Detecting a Jet in Sagittarius A* with Very-long-baseline Interferometry

E Chavez, S Issaoun, MD Johnson… - The Astrophysical …, 2024 - iopscience.iop.org
Abstract Event Horizon Telescope (EHT) images of the horizon-scale emission around the
Galactic center supermassive black hole Sagittarius A*(Sgr A*) favor accretion flow models …

Black hole shadows of -corrected black holes

F Agurto-Sepúlveda, J Oliva, M Oyarzo… - Physical Review D, 2024 - APS
In this paper we study the qualitative features induced by corrections to general relativity
(GR) coming from string theory, on the shadows of rotating black holes. We research the …