The first image of a black hole

Prof Luciano Rezzolla (Goethe University Frankfurt) will discuss how the first image of a black hole was obtained by the EHT (Event Horizon Telescope) collaboration. His will describe the theoretical aspects that have allowed scientists to model the dynamics of the plasma accreting onto the black hole, and how such dynamics were used to generate synthetic black-hole images. He will illustrate how the comparison between the theoretical images and the observations has allowed scientists to deduce the presence of a black hole in M87 and to extract information about its properties. His talk will also describe the lessons learned about strong-field gravity and alternatives to black holes.

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