Calculating black hole shadows: Review of analytical studies

V Perlick, OY Tsupko - Physics Reports, 2022 - Elsevier
In this article, we provide a review of the current state of the research of the black hole
shadow, focusing on analytical (as opposed to numerical and observational) studies. We …

The assembly of the first massive black holes

K Inayoshi, E Visbal, Z Haiman - Annual Review of Astronomy …, 2020 - annualreviews.org
The existence of∼ 109M⊙ supermassive black holes (SMBHs) within the first billion years
of the Universe has stimulated numerous ideas for the prompt formation and rapid growth of …

First Sagittarius A* event horizon telescope results. V. Testing astrophysical models of the galactic center black hole

K Akiyama, A Alberdi, W Alef, JC Algaba… - The Astrophysical …, 2022 - iopscience.iop.org
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 …

First M87 event horizon telescope results. VIII. Magnetic field structure near the event horizon

K Akiyama, JC Algaba, A Alberdi, W Alef… - The Astrophysical …, 2021 - iopscience.iop.org
Abstract Event Horizon Telescope (EHT) observations at 230GHz have now imaged
polarized emission around the supermassive black hole in M87 on event-horizon scales …

First Sagittarius A* Event Horizon Telescope Results. VI: Testing the Black Hole Metric

Event Horizon Telescope Collaboration - arXiv preprint arXiv …, 2023 - arxiv.org
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 …

First M87 event horizon telescope results. V. Physical origin of the asymmetric ring

K Akiyama, A Alberdi, W Alef, K Asada… - The Astrophysical …, 2019 - iopscience.iop.org
Abstract The Event Horizon Telescope (EHT) has mapped the central compact radio source
of the elliptical galaxy M87 at 1.3 mm with unprecedented angular resolution. Here we …

Black hole flares: ejection of accreted magnetic flux through 3D plasmoid-mediated reconnection

B Ripperda, M Liska, K Chatterjee… - The Astrophysical …, 2022 - iopscience.iop.org
Magnetic reconnection can power bright, rapid flares originating from the inner
magnetosphere of accreting black holes. We conduct extremely high-resolution (5376× …

Observing the inner shadow of a black hole: a direct view of the event horizon

A Chael, MD Johnson, A Lupsasca - The Astrophysical Journal, 2021 - iopscience.iop.org
Simulated images of a black hole surrounded by optically thin emission typically display two
main features: a central brightness depression and a narrow" photon ring" consisting of …

First M87 event horizon telescope results. IX. Detection of near-horizon circular polarization

K Akiyama, A Alberdi, W Alef, JC Algaba… - The Astrophysical …, 2023 - iopscience.iop.org
Abstract Event Horizon Telescope (EHT) observations have revealed a bright ring of
emission around the supermassive black hole at the center of the M87 galaxy. EHT images …

Jets in magnetically arrested hot accretion flows: Geometry, power, and black hole spin-down

R Narayan, A Chael, K Chatterjee… - Monthly Notices of the …, 2022 - academic.oup.com
We present the results of nine simulations of radiatively inefficient magnetically arrested
discs (MADs) across different values of the black hole spin parameter a*:− 0.9,− 0.7,− 0.5 …