Monthly Notices of the Royal Astronomical Society, Jan, 2012, Vol.419(2), p.1070(15)
To authenticate to the full-text of this article, please visit this link: http://dx.doi.org/10.1111/j.1365-2966.2011.19766.x Byline: Geraint J. A. Harker (12★), Jonathan R. Pritchard (3), Jack O. Burns (12), Judd D. Bowman (4) Keywords: methods: statistical; cosmology: theory; diffuse radiation; radio lines: general Abstract: ABSTRACT Efforts are being made to observe the 21-cm signal from the 'cosmic dawn' using sky-averaged observations with individual radio dipoles. In this paper, we develop a model of the observations accounting for the 21-cm signal, foregrounds and several major instrumental effects. Given this model, we apply Markov Chain Monte Carlo techniques to demonstrate the ability of these instruments to separate the 21-cm signal from foregrounds and quantify their ability to constrain properties of the first galaxies. For concreteness, we investigate observations between 40 and 120 MHz with the proposed Dark Ages Radio Explorer mission in lunar orbit, showing its potential for science return. Author Affiliation: (1)Center for Astrophysics and Space Astronomy, Department of Astrophysics and Planetary Sciences, University of Colorado at Boulder, CO 80309, USA (2)NASA Lunar Science Institute, NASA Ames Research Center, Moffett Field, CA 94035, USA (3)Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA (4)Arizona State University, School of Earth and Space Exploration, Tempe, AZ 85287, USA Article History: Accepted 2011 September 2. Received 2011 August 31; in original form 2011 July 14 Article note: (★) E-mail: email@example.com
Monte Carlo Methods -- Analysis ; Markov Processes -- Analysis ; Space Exploration -- Analysis ; Universities And Colleges -- Analysis ; Nuclear Radiation -- Analysis
Cengage Learning, Inc.