ACP Seminar (Astronomy - Cosmology - Particle Physics)

Speaker: Rennan Barkana (Tel Aviv)
Title: Studying Galaxies and Reionization with 21-cm Cosmology
Date (JST): Tue, Apr 14, 2009, 13:30 - 14:30
Place: Seminar Room at IPMU Prefab. B
Related File: 54.pdf
Abstract: The earliest generations of galaxies are thought to have heated and reionized the universe. The most promising way to study cosmic reionization is to detect emission in the redshifted 21-cm line of atomic hydrogen.
I will show how measurements of the 21-cm power spectrum should enable the simultaneous reconstruction of the reionization history and the properties of the ionizing sources. I will also present a detailed analysis of the 21-cm PDF (i.e., histogram of pixel values) and show that it offers an independent observational method for reconstructing the reionization history.
Contact: Maeda, Takada