Improving Foreground Subtraction in EOR Power Spectrum Observations

Details Improving Foreground Subtraction in EOR Power Spectrum Observations Improving Foreground Subtraction in EOR Power Spectrum Observations

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...207.3304m&link_type=abstract

American Astronomical Society Meeting 207, #33.04; Bulletin of the American Astronomical Society, Vol. 37, p.1217

Astronomy and Astrophysics

Astronomy

2

Scientific paper

Statistical 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.

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