scientific article published in the Astrophysical Journal
author: Thomas P. Krichbaum, Katie Bouman, Monika Mościbrodzka, Heino Falcke, Sara Issaoun, Ilje Cho, Roman Gold, Eduardo Ros, Andrew Chael, Avery Broderick, Sera Markoff, Laurent Loinard, Helge Rottmann, Geoffrey C. Bower, Iván Martí-Vidal, Jason Dexter, Michael Kramer, James Moran, Pablo de Vicente, Ciriaco Goddi, Uwe Bach
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