On black hole shadow
“KMI colloquium” 9th December (Wed) 17:30-
Speaker :Prof. Ken-ichi Nakao (Osaka City U.)
Title : On black hole shadow
Poster : Colloquium_nakao_20201209
Abstract: It is one of very important theoretical predictions of general relativity that if sources of light surround a black hole, a dark image on a bright background will be observed. This dark image is called the black hole shadow. In 2019, the Event Horizon Telescope collaboration announced that first-ever image of a black-hole (exactly speaking, a black hole shadow) was captured. This is really a great development in physics and astronomy. The black hole shadow is often explained as a silhouette of a black hole. It is, however, a quite misleading description. In this seminar, I briefly review the black hole in general relativity and talk on what is the black hole shadow.
The colloquium will be held via ZOOM.