The recent image of the black hole at the center of the milky way has been spectacular. When I teach a course, I generally emphasize analogies across the sub-disciplines of physics. In the below video I draw some analogies between black hole image and an optical vortex.
About the black hole images : https://iopscience.iop.org/journal/2041-8205/page/Focus_on_First_Sgr_A_Results
Some work from our group on optical vortex : ACS Photonics 6, 1, 148–153 (2019) https://doi.org/10.1021/acsphotonics.8b01220
Book on singular optics : https://www.google.co.in/books/edition/Singular_Optics/H-WVDQAAQBAJ?hl=en&gbpv=1&printsec=frontcover
Science paper on optical analog of event horizon https://www.science.org/doi/epdf/10.1126/science.1153625
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