First Sagittarius A* event horizon telescope results. VI. Testing the black hole metric

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

[HTML][HTML] First Sagittarius A* event horizon telescope results. III. Imaging of the galactic center supermassive black hole

K Akiyama, A Alberdi, W Alef, JC Algaba… - The Astrophysical …, 2022 - iopscience.iop.org
First Sagittarius A* Event Horizon Telescope Results. III. Imaging of the Galactic Center
Supermassive Black Hole - IOPscience Skip to content IOP Science home Accessibility Help …

First Sagittarius A* event horizon telescope results. II. EHT and multiwavelength observations, data processing, and calibration

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

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 …

The Milky Way's supermassive black hole: how good a case is it? A challenge for astrophysics & philosophy of science

A Eckart, A Hüttemann, C Kiefer, S Britzen… - Foundations of …, 2017 - Springer
The compact and, with ∼ 4.3 ± 0.3 * 10^ 6∼ 4.3±0.3× 10 6 M _ ⊙⊙, very massive object
located at the center of the Milky Way is currently the very best candidate for a supermassive …

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× …

First Sagittarius A* Event Horizon Telescope Results. II. EHT and Multi-wavelength Observations, Data Processing, and Calibration

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

Millimeter light curves of Sagittarius A* observed during the 2017 Event Horizon Telescope campaign

M Wielgus, N Marchili, I Martí-Vidal… - The Astrophysical …, 2022 - iopscience.iop.org
Several years after its initial identification (Balick & Brown 1974), the radio source at the
center of our Galaxy, now associated with the supermassive black hole Sagittarius A*(Sgr …

Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign

JC Algaba, J Anczarski, K Asada… - The Astrophysical …, 2021 - iopscience.iop.org
Abstract In 2017, the Event Horizon Telescope (EHT) Collaboration succeeded in capturing
the first direct image of the center of the M87 galaxy. The asymmetric ring morphology and …

Wind-fed GRMHD simulations of Sagittarius A*: tilt and alignment of jets and accretion discs, electron thermodynamics, and multiscale modelling of the rotation …

SM Ressler, CJ White, E Quataert - Monthly Notices of the Royal …, 2023 - academic.oup.com
Wind-fed models offer a unique way to form predictive models of the accretion flow
surrounding Sagittarius A*. We present 3D wind-fed magnetohydrodynamic (MHD) and …