Dr. Andrea Ghez
Professor of Physics and Astronomy
University of California, Los Angeles
The Monster at the Heart of our Galaxy
Wednesday, March 22, 2017 at 4:30 PM
1324 East Hall
University of Michigan Central Campus
There will be a coffee/cookie reception prior to the lecture, beginning at 4:00 pm at the East Hall first floor north (Psych) astrium, located directly behind the lecture hall, facing Church Street.
Learn about new developments in the study of supermassive black holes. Through the capture and analysis of twenty years of high-resolution imaging, the UCLA Galactic Center Group has moved the case for a supermassive black hole at the center of our galaxy from a possibility to a certainty. This was made possible with the first measurements of stellar orbits around a galactic nucleus. Further advances in state-of-the-art of high-resolution imaging technology on the world’s largest telescopes have greatly expanded the power of using stellar orbits to study black holes. Recent observations have revealed an environment around the black hole that is quite unexpected (young stars where there should be none; a lack of old stars where there should be many; and a puzzling new class of objects). Continued measurements of the motions of stars have solved many of the puzzles posed by these perplexing populations of stars. This work is providing insight into how black holes grow and the role that they play in regulating the growth of their host galaxies. Future measurements of stellar orbits at the Galactic Center hold the promise of improving our understanding of gravity through tests of Einstein Theory of General Relativity in an unexplored regime.
Andrea M. Ghez, professor of Physics & Astronomy and Lauren B. Leichtman & Arthur E. Levine chair in Astrophysics, is one of the world’s leading experts in observational astrophysics and heads UCLA’s Galactic Center Group. Best known for her ground-breaking work on the center of our Galaxy, which has led to the best evidence to date for the existence of supermassive black holes, she has received numerous honors and awards including the Crafoord Prize in Astronomy from the Royal Swedish Academy of Science (she is the first woman to receive a Crafoord prize in any field), Bakerian Medal from the Royal Society of London, a MacArthur Fellowship, election to the National Academy of Sciences, the American Academy of Arts & Sciences, and the American Philosophical Society.
Her work on the orbits of stars at the center of the Milky Way has opened a new approach to studying black holes and her group is currently focused on using this approach to understand the physics of gravity near a black hole and the role that black holes plays in the formation and evolution of galaxies.
Advances in high resolution imaging technology enabled Ghez’s work and her group continues to work on pushing the frontiers of these technologies forward. She serves on several leadership committees for the W. M. Keck Observatory, which hosts the largest telescopes in the world, and the future Thirty Meter Telescope.
Ghez is also very committed to the communication of science to the general public and inspiring young girls into science. Her work can be found in many public outlets including TED, NOVA’s Monster of the Milky Way, Discovery’s Swallowed by a Black Hole, TED, and Griffith Observatory.
Ghez earned her B.S from MIT in 1987, and her PhD from Caltech in 1992 and has been on the faculty at UCLA since 1994.
Watch the 2017 Ford Distinguished Lecture, given by Dr. Andrea Ghetz:
Previous lectures in this series:
- 2016 Dr. H. Eugene Stanley: Are There Two Forms of Water?
- 2013 Dr. Nigel Lockyer: The Higgs is One Piece of the Mass Puzzle: Toward a New Understanding of the Quantum Universe
- 2012 Dr. Frank von Hippel: A Global Cleanout of Nuclear Weapon Materials
- 2011 Physics Nobel Laureate William D. Phillips: Time, Einstein, and the Coolest Stuff in the Universe
- 2010 Terry Tao: The Cosmic Distance Ladder
- 2009 Alan Guth: Inflationary Cosmology: Is Our Universe Part of a Multiverse?
- 2008 Margaret Geller: Newton Meets Einstein: Mapping Dark Matter in the Universe
- 2007 Kip Thorne: The Warped Side of the Universe from the Big Bang to Black Holes and Gravitational Waves
- 2006 Physics Nobel laureate Saul Perlmutter: Supernovae, Dark Energy, and the Accelerating Universe -- What Next?
- 2005 Physics Nobel laureate Wolfgang Ketterle: When Freezing Cold is Not Cold Enough -- New Forms of Matter at Close to Absolute Zero Temperature
- 2004 Physics Nobel laureate Robert B. Laughlin: The Emergent Age
- 2003 Physics Nobel laureate Carl E. Wieman: Bose-Einstein Condensation: Quantum Weirdness at the Lowest Temperature in the Universe
- 2002 Sir Michael Atiyah: Geometry and Physics: A Marriage Made in Heaven
- 2001 Mildred S. Dresselhaus: Frontiers in Nanoscience