It seems there are problems with the much distributed image of a black hole event horizon. A ring of light that is said to surround what they say is a black hole at the heart of our galaxy. See for example https://www.digitaltrends.com/news/black-holes-scale/ …. and https://www.csail.mit.edu/news/method-image-black-holes … a method to image black holes. Researchers developed an algorithm to help astronomers produce the first image of black holes . See also https://arxiv.org/pdf/1512.01413.pdf … where the challenge to find an explanation that respects the mainstream view about the visual universe while still satisfying the observed data.
These links are provided on a site that is sceptical of mainstream views on black holes. They interpret them as plasmoids. However, see also https://arxiv.org/pdf/2205.04623/pdf … which is a Japanese article on the algorithm used to produce the event horizon. They found, by using public data released by EHTC they obtained images of the central region of M87 using the improved calibration obtained using the standard hybrid mapping method. Instead of a ring the core of M87 came out as a core knot, as well as another feature that was difficult to interpret. It may have been another knot. The features could be initial jet structures with an opening angle of 70 degrees at a distance of about 10 Rs from the core itself. Basically, their view is that the ring, or the so called event horizon, is an artifact due to the effect of data sampling bias and the very narrow setting that enhances the bias effect. It is the imaging methodology used, or the algorithm itself, that produces the ring. Whether the core knot has anything to do with a plasmoid is another matter. The mainstream astrophysicists failed to find a jet structure even though it is known that M87 has a jet. The Japanese researchers, however, did find a jet. The ring that was produced is due to to the effect of data sampling bias and the very narrow field of view setting of the mainstream methodology. That finding should have made waves. It was on the arXiv pre-print server but does not seem to have been published in a journal. Don’t forget we are talking about several years ago when the event horizon as a ring saw the first light of day. One to chew over as we are not informed by the electric universe people why the Japanese research was blocked.