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Polarized Redundant-Baseline Calibration for 21 cm Cosmology Without Adding Spectral Structure
Joshua S. Dillon, Saul A. Kohn, Aaron R. Parsons +8
21 cm cosmology is a promising new probe of the evolution of visible matter in our universe, especially during the poorly-constrained Cosmic Dawn and Epoch of Reionization. However…
Unlocking Sensitivity for Visibility-based Estimators of the 21 cm Reionization Power Spectrum
Yunfan Gerry Zhang, Adrian Liu, Aaron R. Parsons
Radio interferometers designed to measure the cosmological 21 cm power spectrum require high sensitivity. Several modern low-frequency interferometers feature drift-scan antennas p…
Constraining Polarized Foregrounds for EOR Experiments II: Polarization Leakage Simulations in the Avoidance Scheme
C. D. Nunhokee, G. Bernardi, S. A. Kohn +7
A critical challenge in the observation of the redshifted 21-cm line is its separation from bright Galactic and extragalactic foregrounds. In particular, the instrumental leakage o…
Emulating Simulations of Cosmic Dawn for 21cm Power Spectrum Constraints on Cosmology, Reionization, and X-ray Heating
Nicholas S. Kern, Adrian Liu, Aaron R. Parsons +2
Current and upcoming radio interferometric experiments are aiming to make a statistical characterization of the high-redshift 21cm fluctuation signal spanning the hydrogen reioniza…
The Hydrogen Epoch of Reionization Array Dish III: Measuring Chromaticity of Prototype Element with Reflectometry
Nipanjana Patra, Aaron R. Parsons, David R. DeBoer +54
The experimental efforts to detect the redshifted 21 cm signal from the Epoch of Reionization (EoR) are limited predominantly by the chromatic instrumental systematic effect. The d…