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Universe, Volume 5, Issue 8 (August 2019)
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Cover Story (view full-size image) The Event Horizon Telescope (EHT) recently presented, for the first time, an impressive direct [...] Read more. The Event Horizon Telescope (EHT) recently presented, for the first time, an impressive direct image of the supermassive black hole in the galaxy M87. There are two specific features on this image: the dark silhouette and the bright region. The observed dark region on this image is a silhouette of the black hole event horizon, highlighted by the luminous accretion disk (bright region on the image). This dark silhouette of the black hole event horizon is placed within the expected position of the black hole shadow. The shadow is not viewed on the first image of the supermassive black hole M87* because the intensity of the luminous accretion disk prevails over the corresponding intensity of the background. We numerically calculated the relation between the observed position of the black hole silhouette and the brightest point in the thin accretion disk, depending on the black hole spin. View this paper.