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Sagittarius A*
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aetherist:

--- Quote from: TimFox on May 13, 2022, 09:20:40 pm ---No, that is "Rorschach".  I also know what "wank" means.
I'm not surprised to see a forged image on YouTube.
See section 5 of the paper I cited which discusses the reconstructed images.
By the way, you seem to agree with Einstein, who in 1939 also found black hole solutions to his GR equations disturbing, dare I say "icky"?
https://www.jstor.org/stable/1968902?seq=1#page_scan_tab_contents
--- End quote ---
I don’t understand Einstein's paper. And i don’t understand section 5 of that M87 image paper.
What i do understand is that my aether theory says that blackholes are impossible.
Its like this. An object cannot achieve a speed of  c/1 through the aether.
Hence, aether cannot achieve a speed of c/1 when the aether flows into an object (eg the surface of a star)(or supermassive body).
If light propagates at c/1 through the aether, & if the aether flows into a body at less than  c/1, then light can escape, albeit slowly.

https://iopscience.iop.org/article/10.3847/2041-8213/ab0c96/pdf
https://www.scientificamerican.com/article/the-reluctant-father-of-black-holes-2007-04/
http://old.phys.huji.ac.il/~barak_kol/Courses/Black-holes/reading-papers/Einstein1939.pdf

http://www.ptep-online.com/2011/PP-24-15.PDF
Five Fallacies Used to Link Black Holes to Einstein’s Relativistic Space-Time
Douglas L. Weller
E-mail: physics@dougweller.com
For a particle falling radially toward a compact mass, the Schwarzschild metric maps
local time to coordinate time based on radial locations reached by the particle. The
mapping shows the particle will not cross a critical radius regardless of the coordinate
used to measure time. Herein are discussed five fallacies that have been used to make it
appear the particle can cross the critical radius.
thinkfat:
There's a nice Veritasium video about the image and how the data to create it was generated. Might be easier to swallow than the actual physics paper.
TimFox:
To Aetherist:  Your theory states that black holes are impossible.
A very large-scale experiment shows that Sag A* has all the features expected of a "supermassive" black hole.
Perhaps your aetherial theory does not agree with experiment in gravitational systems.
(I was referring to sections 3 and 5 of the Sag A* paper, but there is similar material in the earlier M87* paper.)
aetherist:

--- Quote from: TimFox on May 13, 2022, 10:10:34 pm ---To Aetherist:  Your theory states that black holes are impossible.
A very large-scale experiment shows that Sag A* has all the features expected of a "supermassive" black hole.
Perhaps your aetherial theory does not agree with experiment in gravitational systems.
(I was referring to sections 3 and 5 of the Sag A* paper, but there is similar material in the earlier M87* paper.)
--- End quote ---
I am ok with supermassive bodies.
These do not have to be very massive to semi-trap light.
I agree with Einstein that light slows near mass. Hence the escape velocity of a body duznt need to be  c/1 if light is to be trapped, the escape velocity needs to be  c'/1, where  c' is slower than c. Hence as i said bodies do not have to be very massive to semi-trap light.

Previously i said that the aether inflow to a body can't attain  c/1, i should have said  c'/1.
Hence even tho the speed of light is slowed near the body, the speed of aether  inflow is also slowed, hence i can still say that a blackhole is impossible.
TimFox:
Or, as Galileo might have said, "yet, they exist".
(Yes, I know that the original quotation is apocryphal.)

Of course, this is how theories are tested in real physics.
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