Improving Foreground Subtraction in Statistical Observations of 21 cm Emission from the Epoch of Reionization

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dc.creatorMorales, Miguel F.
dc.creatorBowman, Judd D.
dc.creatorHewitt, Jacqueline N.
dc.date2005-10-03
dc.date2006-06-12
dc.date.accessioned2026-07-07T10:43:19Z
dc.date.available2026-07-07T10:43:19Z
dc.descriptionStatistical observations of the Epoch of Reionization using the 21 cm line of neutral hydrogen have the potential to revolutionize our understanding of structure formation and the first luminous objects. However, these observations are complicated by a host of strong foreground sources. Several foreground removal techniques have been proposed in the literature, and it has been assumed that these would be used in combination to reveal the Epoch of Reionization (EOR) signal. By studying the characteristic subtraction errors of the proposed foreground removal techniques, we identify an additional subtraction stage that can further reduce the EOR foreground contamination, and study the interactions between the foreground removal algorithms. This enables us to outline a comprehensive foreground removal strategy that incorporates all previously proposed subtraction techniques. Using this foreground removal framework and the characteristic subtraction errors, we discuss the complementarity of different foreground removal techniques and the implications for array design and the analysis of EOR data.
dc.descriptionReplaced with version accepted by ApJ: minor text changes to make the paper clearer, updated references
dc.identifierhttps://arxiv.org/abs/astro-ph/0510027
dc.identifierhttp://arxiv.org/abs/astro-ph/0510027
dc.identifierAstrophys.J.648:767-773,2006
dc.identifierdoi:10.1086/506135
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/182203
dc.subjectAstrophysics
dc.titleImproving Foreground Subtraction in Statistical Observations of 21 cm Emission from the Epoch of Reionization
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