The Event Horizon Telescope (EHT) collaboration, who produced the first ever image of a black hole, has revealed today a new view of the massive object at the center of the M87 galaxy: how it looks in polarized light. This is the first time astronomers have been able to measure polarization, a signature of magnetic fields, this close to the edge of a black hole. The observations are key to explaining how the M87 galaxy, located 55 million light-years away, is able to launch energetic jets from its core.
Charles Forbes Gammie
Donald Biggar Willett Chair in Physics and Professor
Professor Charles Gammie received his bachelor's degree in mathematics in 1987 from Yale University and his Ph.D. in astrophysical sciences from Princeton in 1992. He was a postdoctoral fellow at the University of Virginia from 1992-1994, and at the Harvard-Smithsonian Center for Astrophysics in Cambridge, Massachusetts from 1994-1998. He joined the faculties of physics and astronomy at Illinois in January 1999.
Professor Gammie's research involves black holes, star and planet formation, and accretion physics. He is a leader in the computer simulation of astrophysical plasmas, particularly studies of hot plasmas accreting onto black holes. He was named a University Scholar and a Richard and Margaret Romano Professorial Scholar in 2007.
- University Scholar, University of Illinois, September 2007 - August 2010
- Center for Advanced Study Beckman Fellowship, 2001, 2002, 2003
- Presidential Early Career Award for Scientists And Engineers (PECASE), July 2002
- National Science Foundation CAREER Award for Outstanding Research/Teaching, 2001-2006
- National Center for Supercomputing Applications (NCSA), Faculty Fellow, 2001-2002, University of Illinois at Urbana-Champaign
Semesters Ranked Excellent Teacher by Students
|Spring 2015||PHYS 496|
Selected Articles in Journals
- Gammie, C.F., Noble, S., & Leung, P.K., “Numerical Models of Black Hole Accretion Flows,” Comp. Phys. Comm., 177: 250–253, Jul. 2007.
- Johnson, B., & Gammie, C.F., “Linear Theory of Thin, Radially Stratified Disks,” Astrophys. J., 626: 978–990, June 2005.
- McKinney, J.C., & Gammie, C.F., “A Measurement of the Hydromagnetic Luminosity of a Kerr Black Hole,” Astrophys. J., 611: 977–995, August 2004.
- Gammie, C.F., “The Magnetorotational Instability in the Kerr Metric,” Astrophys. J., 614: 309–313, October 2004.
- Watson, W.D., Wiebe, D.S., McKinney, J.C., & Gammie, C.F., “Anisotropy of Magnetohydrodynamic Turbulence and the Polarized Spectra of OH Masers,” Astrophys. J., 604: 707–716, April 2004.
- Gammie, C.F., Shapiro, S.L., & McKinney, J.C., “Black Hole Spin Evolution,” Astrophys. J., 602: 312–319, February 2004.
Since it formed roughly 4.5 billion years ago, the Moon has been Earth’s nearest neighbor and constant companion. Though it is the most familiar object in the night sky, the Moon’s origin remains in many ways mysterious. Researchers at the Illinois Center for Advanced Studies of the Universe (ICASU) are the first to examine the role of magnetic fields in the formation of Earth’s Moon, offering new insights into how and when the Moon may have formed.
In April 2019, the Event Horizon Telescope (EHT) Collaboration published the first images of a black hole, the one at the center of the nearby galaxy M87. Now, a new analysis of unexplored archival data from as early as 2009 has shown that although the size and shape of the crescent-like asymmetry present in the original image is a consistent feature of the data, its orientation varies. The crescent wobbles.The full results have been published in The Astrophysics Journal.
- Research Funding
Scientists at the newly founded Illinois Center for Advanced Studies of the Universe (ICASU) at the University of Illinois at Urbana-Champaign have been awarded $1.2 million total in two grants from the National Science Foundation (NSF).