报告题目：Simulating the Cosmic Dawn

报 告 人：Yi Mao,Paris Institute of Astrophysics

报告时间：2015年6月3日15：30

报告地点：理科楼B315

报告摘要：：The epoch of reionization is a period in the history of the Universe during which the intergalactic hydrogen gas went from neutral to ionized. This watershed event was powered by the emergence of the first luminous objects when the Universe was a few hundred million years to a billion years old. I will report our recent progress in advancing our capability to model such an intrinsically nonlinear process more efficiently and more robustly. I will present a new algorithm for the 3D transport of ionizing radiation in numerical reionization simulations, called F2-Ray (Fast Fourier Ray-tracing method), which overcomes the limitations of the standard ray-tracing methods, and, therefore, can be an order of magnitude computationally more efficient.