Aus diesem Artikel: https://iopscience.iop.org/article/10.3847/2041-8213/ab0f43
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">Zitat:<hr height="1" noshade id="quote"> The central flux depression is the so-called black hole "shadow" (Falcke et al. 2000), and corresponds to lines of sight that terminate on the event horizon. The shadow could be seen in contrast to surrounding emission from the accretion flow or lensed counter-jet in M87 (Broderick & Loeb 2009).<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">
Also ist doch der dunkle Bereich im Zentrum des Rings der Ereignishorizont des SL, oder?