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Australian Human Resources Institute Diversity Awards 2013 Finalist

Katie Mack, Kavli Institute/Institute of Astronomy, Cambridge ()

"The 21cm Forest"

Abstract. Future observations of the "21cm forest" against high-redshift radiosources will allow us to trace out the structure of neutral hydrogenin the pre-reionization intergalactic medium (IGM), provided brightradio sources can be found at sufficiently high redshift. I willpresent a calculation of the expected 21cm forest as might be observedin coming years and discuss the trade-off between the availability oflarge populations of high-redshift background radio sources and therequirement for the IGM to be sufficiently neutral for strongabsorption in 21cm.

Held in the AAO Conference room at 03:30 PM on Wednesday, 27 October 2010