[HTML][HTML] From galactic bars to the hubble tension: Weighing up the astrophysical evidence for milgromian gravity
Astronomical observations reveal a major deficiency in our understanding of physics—the
detectable mass is insufficient to explain the observed motions in a huge variety of systems …
detectable mass is insufficient to explain the observed motions in a huge variety of systems …
Beyond ΛCDM: Problems, solutions, and the road ahead
Despite its continued observational successes, there is a persistent (and growing) interest in
extending cosmology beyond the standard model, Λ CDM. This is motivated by a range of …
extending cosmology beyond the standard model, Λ CDM. This is motivated by a range of …
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 …
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. 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 …
stationary, vacuum, axisymmetric metric, without electromagnetic charge, that satisfies …
Relativistic redshift of the star S0-2 orbiting the Galactic Center supermassive black hole
The general theory of relativity predicts that a star passing close to a supermassive black
hole should exhibit a relativistic redshift. In this study, we used observations of the Galactic …
hole should exhibit a relativistic redshift. In this study, we used observations of the Galactic …
New relativistic theory for modified Newtonian dynamics
We propose a relativistic gravitational theory leading to modified Newtonian dynamics, a
paradigm that explains the observed universal galactic acceleration scale and related …
paradigm that explains the observed universal galactic acceleration scale and related …
Tests of loop quantum gravity from the event horizon telescope results of Sgr A
Abstract The Event Horizon Telescope (EHT) collaboration's image of the compact object at
the Galactic center is the first direct evidence of the supermassive black hole (BH) Sgr A …
the Galactic center is the first direct evidence of the supermassive black hole (BH) Sgr A …
Fundamental physics with the square kilometre array
The Square Kilometre Array (SKA) is a planned large radio interferometer designed to
operate over a wide range of frequencies, and with an order of magnitude greater sensitivity …
operate over a wide range of frequencies, and with an order of magnitude greater sensitivity …
Cosmological tests of modified gravity
K Koyama - Reports on Progress in Physics, 2016 - iopscience.iop.org
We review recent progress in the construction of modified gravity models as alternatives to
dark energy as well as the development of cosmological tests of gravity. Einstein's theory of …
dark energy as well as the development of cosmological tests of gravity. Einstein's theory of …