11/4 seminar: the Epoch of Reionization

in Uncategorized
November 4th, 2013

Astrophysics Seminar Series

“Hydrogen and Heavy Element Measurements near the Epoch of Reionization”

Robert Simcoe
MIT

Monday, November 4, 2013
Refreshments at 3:15pm in CAS 500
Talk begins at 3:30pm in CAS 502

Abstract:
Infrared photometric surveys are now discovering quasars at z > 6.5, enabling investigation of neutral Hydrogen and its associated heavy elements at the tail end of the reionization epoch. I will discuss results from our earliest spectroscopic observations of these objects using FIRE on Magellan, and frame these results in the context of early circumgalactic metal pollution. I will also discuss limitations of the current measurements and ways that next-generation telescopes may help address these shortcomings. Finally, I will provide a high-level overview of selected new instrumentation concepts and technology development projects underway at MIT.