Event Horizon Telescope
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The Event Horizon Telescope (EHT) is a large
The Event Horizon Telescope project is an international collaboration launched in 2009  after a long period of theoretical and technical developments. On the theory side, work on the photon orbit  and first simulations of what a black hole would look like  progressed to predictions of VLBI imaging for the Galactic Center black hole, Sgr A*. Technical advances in radio observing moved from the first detection of Sgr A*, through VLBI at progressively shorter wavelengths, ultimately leading to detection of horizon scale structure in both Sgr A* and M87. The collaboration now comprises over 200 members, 60 institutions, working over 20 countries and regions.
The first image of a black hole, at the center of galaxy Messier 87, was published by the EHT Collaboration on April 10, 2019, in a series of six scientific publications. The array made this observation at a wavelength of 1.3 mm and with a theoretical
The EHT is composed of many radio observatories or radio telescope facilities around the world, working together to produce a high-sensitivity, high-angular-resolution telescope. Through the technique of
Each year since its first data capture in 2006, the EHT array has moved to add more observatories to its global network of radio telescopes. The first image of the Milky Way's supermassive black hole, Sagittarius A*, was expected to be produced in April 2017, but because the
Data collected on hard drives are transported by commercial freight airplanes (a so-called