Tianlai pathfinder data yields a spherically averaged 21 cm power spectrum at z~0.9 after RFI flagging, calibration, imaging, point-source subtraction, and SVD foreground removal.
A., Brown, M
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abstract
BINGO is a concept for performing a 21cm intensity mapping survey using a single dish telescope. We briefly discuss the idea of intensity mapping and go on to define our single dish concept. This involves a \sim 40 m dish with an array of \sim 50 feed horns placed \sim 90 m above the dish using a pseudo-correlation detection system based on room temperature LNAs and one of the celestial poles as references. We discuss how such an array operating between 960 and 1260 MHz could be used to measure the acoustic scale to 2.4% over the redshift range 0.13<z<0.48 in around 1 year of on-source integration time by performing a 10 deg \times 200 deg drift scan survey with a resolution of \sim 2/3 deg.
years
2026 2representative citing papers
Reviews multiple higher-order statistics for 21-cm intensity mapping and forecasts their detectability with SKAO, incorporating noise and foreground effects.
citing papers explorer
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21 cm Power Spectrum Analysis of North Celestial Pole Observations with the Tianlai Dish Pathfinder Array
Tianlai pathfinder data yields a spherically averaged 21 cm power spectrum at z~0.9 after RFI flagging, calibration, imaging, point-source subtraction, and SVD foreground removal.
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Cosmology with Intensity Mapping via Statistics Beyond the Power Spectrum in the SKAO Era
Reviews multiple higher-order statistics for 21-cm intensity mapping and forecasts their detectability with SKAO, incorporating noise and foreground effects.