Hassani

Actually, the picture realised by EHT team is a just an additional confirmation of the “galactic plasmoids”. Also it affirms the plasma cosmology hypothesis that the object at a galactic core is not a BH at all but an ultra-high density energy storage phenomena called a PLASMOID. Plasmoid has been predicted by the Physicist Winston H. Bostick. Bostick's theoretical prediction has been confirmed experimentally, and also the different properties and geometrical shapes of plasmoid has been well investigated in many laboratories. The readers of my comment can verify themselves what I wrote through the following references: ‒ Winston H. Bostick, “Experimental Study of Ionized Matter Projected across a Magnetic Field”, Physical Review 104, 292 (1956) ‒ Winston H. Bostick, "Possible Hydromagnetic Simulation of Cosmical Phenomena in the Laboratory" (1958) Cosmical Gas Dynamics, Proceedings from IAU Symposium no. 8. Edited by Johannes Martinus Burgers and Richard Nelson Thomas. International Astronomical Union. Symposium no. 8, p. 1090 ‒ Winston H. Bostick, "What laboratory-produced plasma structures can contribute to the understanding of cosmic structures both large and small" (1986) IEEE Transactions on Plasma Science (ISSN 0093-3813), vol. PS-14, Dec. 1986, p. 703-717. NB.: attached are two seminal papers by Bostick. Plasmoid (I) 1958.pdf Plasmoid (II) 1958.pdf

See/read the following papers: 1) “First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole” ,The Astrophysical Journal Letters, 875, (17pp), 2019 2) K. Schwarzschild, On the gravitational field of a mass point according to Einstein’s theory. Sitzungsber. Preuss. Akad. Wiss., Phys. Math. Kl., 189, 1916 3) https://arxiv.org/abs/physics/9905030

After the so-called GWs detection, today I heard the observation of a supermassive BH in the centre of the giant elliptical galaxy M87. As usual, an international team published an article “First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole” (The Astrophysical Journal Letters, 875:L1 (17pp), 2019 April 10) in which they reported the observation of the alleged supermassive BH. Incredible but true, in their article, the authors mentioned Schwarzschild's original paper(1916)! However, the concept of BH cannot be deduced from Schwarzschild's original solution. The genuine scientists have a duty to protect the ‘original Schwarzschild's solution’ as a legacy for the scientific community. The original Schwarzschild's solution obtained in 1915 and published in 1916 [1]: ds2 = (1 ‒ α/R)dt2 ‒ (1 ‒ α/R)‒1 dR2 ‒ R2 (dθ2 + sin2θdφ2), R ≡ R(r) = (r3 + α3)1/3, 0 < r < ∞. As we can remark more clearly there is only one singularity in Schwarzschild’s solution, at r = 0, to which his solution is constructed. Therefore, contrary to the usual claims made by the so-called GR-experts and reported in many textbooks and peer-reviewed articles, Schwarzschild did not pronounce a single word about the bizarre object that is called a black hole; he did not allege the so-called ‘Schwarzschild radius’; he did not claim that there is an ‘event horizon’ (by any other name); and his solution clearly forbids the black hole because when Schwarzschild’s r = 0, his R = α, and so there is no possibility for his R to be less than α. All this can be easily verified by simply reading Schwarzschild’s original paper [1]. Thus, the expression: ds2 = (1 ‒ 2Gm/c2r)dt2 ‒ (1 ‒ 2Gm/c2r)‒1 dr2 ‒ r2 (dθ2 + sin2θdφ2), was and is still wrongly attributed to Schwarzschild in which it is asserted by inspection that r can go down to zero in some way, producing an infinitely dense point-mass singularity there, with an event horizon at the 'Schwarzschild radius' at r = 2Gm/c2: it is the birth of a black hole. Compare this metric with that really obtained by Schwarzschild [1]. Finally, GWs and BHs cannot be predicted in the context and formalism of GRT for multiple reasons. Reference: [1] [K. Schwarzschild, On the gravitational field of a mass point according to Einstein’s theory. Sitzungsber. Preuss. Akad. Wiss., Phys. Math. Kl., 189, 1916]. English Translation https://arxiv.org/abs/physics/9905030