MIT 8.962 General Relativity, Spring 2020 - 23. Black holes II

MIT 8.962 General Relativity, Spring 2020 Instructor: Scott Hughes View the complete course: https://ocw.mit.edu/8-962S20 YouTube Playlist: https://www.youtube.com/playlist?list=PLUl4u3cNGP629n_3fX7HmKKgin_rqGzbx Motion near black holes.  Taking advantage of the symmetries of a black hole spacetime, we develop simple equations that describe orbits near black holes.  We deduce the existence of an innermost stable orbit — any orbit that is set up inside this radius will either fall into the black hole or rocket out to infinity if slightly disturbed.  We also examine the motion of light near these objects, showing that a 'light ring' exists where light is bent into a circular orbit.  This is closely related to black hole shadow that was observed by the Event Horizon Telescope. License: Creative Commons BY-NC-SA More information at https://ocw.mit.edu/terms More courses at https://ocw.mit.edu Support OCW at http://ow.ly/a1If50zVRlQ We encourage constructive comments and discussion on OCW’s YouTube and other social media channels. Personal attacks, hate speech, trolling, and inappropriate comments are not allowed and may be removed. More details at https://ocw.mit.edu/comments.