00438nas a2200181   4500000000100000000000100001008004100002100001400043700001400057700001600071700001300087700002000100700001600120700001400136700001400150700001600164245007600180       2018                            d1 aY. Mizuno1 aZ. Younsi1 aC. M. Fromm1 aO. Porth1 aM. De Laurentis1 aH. Olivares1 aH. Falcke1 aM. Kramer1 aL. Rezzolla00aThe current ability to test theories of gravity with black hole shadows