SISTA Colloquium Details
Monday, February 7, 2011
12:00 – 12:50 p.m.
Gould-Simpson Building, Room 906Light refreshments in 9th floor atrium area - 11:50 a.m.
Davé, Associate Professor
Department of Astronomy
University of Arizona
Title: From Darkness, Light: Computing Cosmic Reionization
Abstract: The cosmic dark ages ended as the first sources of radiation formed
just a few hundred Myr after the Big Bang; by 1 Gyr, the Universe
was fully reionized into its present, mostly transparent state. This transformation, known as cosmic reionization, is the last major phase transition in our Universe, and understanding how it transpired is a central question in astronomy that motivates many of the next decade's most ambitious telescopes. I will review current observational and theoretical work on reionization, particularly highlighting early results from our unique new cosmological radiative hydrodynamics simulations. I will show that processes of galaxy formation, large scale structure growth, and radiative transfer are intimately intertwined, and all are critical for understanding reionization. The severe computational requirements and complex multi-scale physics make reionization a frontier challenge in numerical hydrodynamics.