The Astrophysics of Supermassive Black Holes

David Ballantyne is an Associate Professor in the School of Physics at Georgia Tech. His research concentrates on topics in high-energy astrophysics with an emphasis on interpreting existing data and making predictions for future observations.Presented on October 21, 2014 at 6:00 p.m. in the Clough Undergraduate Learning Commons, room 144.Runtime: 61:41 minutesBlack holes are perhaps the most mysterious and enigmatic objects that one can imagine. Their gravitational fields are so strong that light is unable to escape their grasp, and even fundamental quantities such as space and time are severely disrupted by their presence. Yet, despite their fantastical nature, astronomers have compiled significant evidence that black holes are actually quite common and are lying at the centers of almost all massive galaxies. Therefore, black holes are no longer the theoretical subjects of mathematical physicists; they are now known to be crucial to our understanding of how galaxies and other structures in the Universe formed and evolved. This talk will provide an overview of our understanding of black holes in the observable universe, and outline how astrophysicists are using them to probe some of the deepest questions in the cosmos