activity
20102026
most citedFirst Results from HERA Phase I: Upper Limits on the Epoch of Reionization 21 cm Power Spectrum

200 citations · 1.1k across the 32 of their papers we have counts for

collaborators

33 papers

astro-ph.IM2026

Optimisation of calibration sources for global 21-cm experiments: the REACH case

Adarsh Kumar Dash, Dominic Anstey, Harry T. J. Bevins +41

The spin-flip 21-cm signal from the Cosmic Dawn and the Epoch of Reionization is an essential probe of the conditions that led to the formation of the first luminous objects in the…

astro-ph.CO2025

First Results from HERA Phase II

The HERA Collaboration, Zuhra Abdurashidova, Tyrone Adams +83

We report the first upper limits on the power spectrum of 21-cm fluctuations during the Epoch of Reionization and Cosmic Dawn from Phase II of the Hydrogen Epoch of Reionization Ar…

astro-ph.CO2025★ 3 cited

Exploring One-point Statistics in HERA Phase I Data: Effects of Foregrounds and Systematics on Measuring One-Point Statistics

Honggeun Kim, Jacqueline N. Hewitt, Nicholas S. Kern +61

Measuring one-point statistics in redshifted 21 cm intensity maps offers an opportunity to explore non-Gaussian features of the early universe. We assess the impact of instrumental…

astro-ph.IM2025★ 3 cited

Radiometer Calibration using Machine Learning

S. A. K. Leeney, H. T. J. Bevins, E. de Lera Acedo +35

Radiometers are crucial instruments in radio astronomy, forming the primary component of nearly all radio telescopes. They measure the intensity of electromagnetic radiation, conve…

astro-ph.CO2024

Impacts and Statistical Mitigation of Missing Data on the 21cm Power Spectrum: A Case Study with the Hydrogen Epoch of Reionization Array

Kai-Feng Chen, Michael J. Wilensky, Adrian Liu +66

The precise characterization and mitigation of systematic effects is one of the biggest roadblocks impeding the detection of the fluctuations of cosmological 21cm signals. Missing…

astro-ph.IM2024★ 2 cited

Mitigating calibration errors from mutual coupling with time-domain filtering of 21 cm cosmological radio observations

N. Charles, N. S. Kern, R. Pascua +80

The 21 cm transition from neutral Hydrogen promises to be the best observational probe of the Epoch of Reionisation (EoR). This has led to the construction of low-frequency radio i…