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  • Tom Mozdzen
Tom Mozdzen

Corresponding Author:[email protected]

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Abstract

Epoch of Reionization (EOR) studies are designed to detect mK level signals of the redshifted 21 cm emission from neutral hydrogen. Foreground signals are several orders of magnitude larger than the desired signal and must be subtracted from the response of the antenna. A site which can minimize the antenna’s response to the sky foreground would make an ideal place to locate an EOR antenna. We evaluate several EOR antennae for their susceptibility to unwated sky foreground, as measured by the Haslam Radio Sky Map, as a function of the antenna location on earth (latitude and longitude). The antennae included in this study are Big Horn, EDGES, DARE, ZEBRA, and a theoretical antenna with a perfect gaussian beam pattern in the frequency range of 50 MHz to 200 Mhz. We also consider the polarization orientation of the antenne and find that the EDGES antenna is least susceptible to sky signals and that the polarization of the antenna is a secondary effect. The results outline terrestrial locations in which unwanted sky signals in the 50-200 MHz range are minimized.