A wave like vertical structure has been discovered being produced in the inner accretion disk of binary star system Swift J1357.2 near the inferred black hole, and is moving outwards like the waves produced by dropping stones in calm still water.
These are Alfven waves in plasma. The mathematics for Alfven waves are extremely complex, and are still the same ones, valid for over a century, on Wikipedia. Alfven waves are largely ignored by mainstreaming astronomers believing in dark matter. The proper credit for this discovery goes to Hannes Alfven. Gravity astronomers always think about stones instead of plasma.
|Swift J1357.2 binary star system is perfectly aligned for seeing Alfven wave phenomena|
Gravity astronomers believe supermassive black holes acquire most of their spin as they grow, by only a few major collisional mergers, rather than being born with high spin.
Alfven waves travel at speeds dependent on the plasma medium, and can fully explain common outer space wave phenomena, and the vertical structure detected in the accretion disk of the binary star system Swift J1357.2. Plasma galaxies display fractal self-similarity in some ways to binary star accretion disks, that have a fast spinning imaginary postulated "black hole" companion near the center region never directly observable.
NGC 1365 black hole center spins at 84% light speed. Alfven waves also travel at these relativistic speeds in plasma mediums. There's no proof whatsoever that gravitational black holes exist, shrouded and concealed by dust, beyond mere postulated theoretical theories and unseen dark matter forces.
Dark matter is supposed to hold galaxies together, and keep them from flying apart, because their rotation curves show they spin too fast to explain galaxy shapes by current gravity theories. The percentages of mysterious dark matter far outweigh normal matter, about 10 to 1. Plasma is believed to comprise 99.9% of the universe, and behaves like a superfluid and electric charged ionized gas, rather than something gravitational.
An extremely precise edge-on view with a new telescope was required to detect the vertical structure in the accretion disk of the binary star system Swift J1357.2. Astronomers now believe that many common binary stars and galaxies, also all have this vertical structure. This finding and correct interpretation supplies credible evidence that black holes do not exist. Electromagnetism in plasma outer space is called magnetohydrodynamics, and does not require inventing phony dark matter for missing gravity theories to never discover for Einstein's relativity.