The sensitivity of first-generation epoch of reionization observatories and their potential for differentiating theoretical power spectra

Judd D. Bowman, Miguel F. Morales, Jacqueline N. Hewitt

Research output: Contribution to journalArticle

114 Scopus citations

Abstract

Statistical observations of the epoch of reionization (EOR) power spectrum provide a rich data set for understanding the transition from the cosmic "dark ages" to the ionized universe we see today. EOR observations have become an active area of experimental cosmology, and three first-generation observatories - MWA, PAST, and LOFAR - are currently under development. In this paper we provide the first quantitative calculation of the three-dimensional power spectrum sensitivity, incorporating the design parameters of a planned array. This calculation is then used to explore the constraints these first-generation observations can place on the EOR power spectrum. The results demonstrate the potential for upcoming power spectrum observations to constrain theories of structure formation and reionization.

Original languageEnglish (US)
Pages (from-to)20-26
Number of pages7
JournalAstrophysical Journal
Volume638
Issue number1 I
DOIs
StatePublished - Feb 10 2006

Keywords

  • Early universe
  • Intergalactic medium
  • Radio lines: general
  • Techniques: interferometric

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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