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Not all theories can explain the black hole M87* | EurekAlert! Science News

Theoretical physicists at Goethe University Frankfurt have analysed data from the black hole M87 as part of the Event Horizon Telescope (EHT) collaboration to test Albert Einstein s theory of general relativity. According to the tests, the size of the shadow from M87 is in excellent agreement being from a black hole in general relativity, but sets constraints on the properties of black holes in other theories. ....

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Telescopes Unite in Unprecedented Observations of Famous Black Hole


Center for Astrophysics
EHT Collaboration
Cambridge, MA – In April 2019, scientists released the first image of a black hole in galaxy M87 using the Event Horizon Telescope (EHT). However, that remarkable achievement was just the beginning of the science story to be told.
Data from 19 observatories released today promise to give unparalleled insight into this black hole and the system it powers, and to improve tests of Einstein’s General Theory of Relativity.
“We knew that the first direct image of a black hole would be groundbreaking,” says Kazuhiro Hada of the National Astronomical Observatory of Japan, a co-author of a new study published in The Astrophysical Journal Letters that describes the large set of data. “But to get the most out of this remarkable image, we need to know everything we can about the black hole’s behavior at that time by observing over the entire electromagnetic spectrum.” ....

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