59 citations · 243 across the 23 of their papers we have counts for
4 papers · 1 filter
Extracting the Epoch of Reionization Signal with 3D U-Net Neural Networks Using Data-driven Systematic Effect Model
Li-Yang Gao, Léon V. E. Koopmans, Florent G. Mertens +11
Neutral hydrogen (HI) serves as a crucial probe for the Cosmic Dawn and the Epoch of Reionization (EoR). Actual observations of the 21-cm signal often encounter challenges such as…
Ionospheric contributions to the excess power in high-redshift 21-cm power-spectrum observations with LOFAR
S. A. Brackenhoff, M. Mevius, L. V. E. Koopmans +9
The turbulent ionosphere causes phase shifts to incoming radio waves on a broad range of temporal and spatial scales. When an interferometer is not sufficiently calibrated for the…
The impact of lossy data compression on the power spectrum of the high redshift 21-cm signal with LOFAR
J. K. Chege, L. V. E. Koopmans, A. R. Offringa +8
Current radio interferometers output multi-petabyte-scale volumes of data per year making the storage, transfer, and processing of this data a sizeable challenge. This challenge is…
Beyond the horizon: Quantifying the full sky foreground wedge in the cylindrical power spectrum
S. Munshi, F. G. Mertens, L. V. E. Koopmans +8
One of the main obstacles preventing the detection of the redshifted 21-cm signal from neutral hydrogen in the early Universe is the astrophysical foreground emission, which is sev…