Events at Physics |
Events on Tuesday, November 17th, 2009
- Chaos & Complex Systems Seminar
- Age Related Macular Degeneration Through the Eye of the Fly
- Time: 12:05 pm
- Place: 5310 Chamberlin (Refreshments will be served)
- Speaker: Nansi Colley, Ophthalmology & Visual Sciences
- Abstract: A highly magnified view of a fruit fly's eye shows the light-sensitive cellular structures known as rhabdomeres. These specialized structures in the retina transform light into electrical impulses that the brain recognizes as "sight." Analogous structures serve the same function in humans. The fly's surprising genetic similarity to humans allows Nansi Colley, PhD, a UW Eye Research Institute scientist, to pinpoint mutations leading to macular degeneration, retinitis pigmentosa, and other vision-threatening diseases.
- Theory/Phenomenology Seminar
- Jets and Jet Substructure at the LHC
- Time: 2:30 pm - 3:30 pm
- Place: 2301 Sterling Hall
- Speaker: David Krohn, Princeton University
- Host: Tao Han
- Astronomy Colloquium
- The subtle Physics of Black Hole Accrection"
- Time: 3:30 pm - 5:00 pm
- Place: 3425 Sterling Hall
- Speaker: Chris Reynolds, University of Maryland
- Abstract: For almost the past 20 years, the paradigm for black hole accretion has highlighted the central role of magnetohydrodynamic (MHD) turbulence. However, only in recent years have high-resolution simulations started to explore the subtle nature of MHD turbulent disks. I will discuss results from a series of simulations focusing on geometrically-thin accretion disks. I shall focus on the dynamics of the disk and the transition to the plunging flow close to the black hole, and explain why the low density "corona" of the disk plays a previously unrecognized and important role in shaping the dynamics of the disk. I shall also present a study of the temporal properties of the accretion flow. I shall end by connecting this theoretical work with a new XMM-Newton observation of the Seyfert galaxy 1H0707-495.
- Host: Professor Sebastian Heinz