Isn't the core of all these posts that these two spacetimes, the one where something crosses the event horizon in its proper time and the other one, where it doesn't even reach in coordinate time the event horizon in finite time the fact that the principle of simultaneity just can't be applied...
So quite fruitless. If I remember correctly you stated somewhere here some time ago that only an exact solution of the EFE modelling a Galaxie could clarify this matter. I wonder why proponents of gravitational field self-interaction haven't presented such a solution till now. Too difficult?
Ok, thanks. So one could conclude that the physical content isn't very convincing. Or people don't read it at all because field self-interaction in general is judged as being a negligible effect.
https://arxiv.org/pdf/2503.09804
From the abstract:
... Our derivation uses both EE and the Newtonian approximation of EE in Part I, to describe semi-classically in Part II the advection of DM, created at the level of the universe, into galaxies and clusters thereof. This advection happens...
As an aside here is another attempt to get rid of Dark Matter in Galaxies.
"Exact solutions for differentially rotating galaxies in general relativity" / https://arxiv.org/pdf/2406.14157
abstract: "Whether or not abundant collisionless dark matter exists, the new solutions very strongly...
https://www.mdpi.com/2571-712X/8/3/65
In short, if the dynamics of spiral galaxies are dependent on galactic morphology in the way predicted by GR-SI, and the morphology of galaxies are correlated with their number of satellite galaxies (and more generally, their environment), then we expect to...
The decoherence time is extremely short for macroscopic objects like a detector. Does this mean that the outcome of a quantum measurement which happens instantaneous can be understood as being caused by decoherence?
I don't know if its the minimum. I took this picture end of 2021 with my Sony A7III using a 200 mm telephoto lens together with the Omegon MiniTrack LX3, which is mechanically guiding. This picture was my motivation to learn Astrofotografie later.
First light for my RedCat 51 at the Astro-Farm Kiripotib in Namibia in May 2025. The conditions have been overwhelming, 10 hours dark sky each night, SQM around 21.6 and while walking to the Astro-Camp the bright Milky way already at half past 7 pm.
Setup
Teleskop: RedCat P 51/250 f/4,9...