On the use of temporal filtering for mitigating galactic synchrotron calibration bias in 21 cm reionization observations
Precision antenna calibration is required for mitigating the impact of foreground
contamination in 21 cm cosmological radio surveys. One widely studied source of error is …
contamination in 21 cm cosmological radio surveys. One widely studied source of error is …
The Impact of Beam Variations on Power Spectrum Estimation for 21 cm Cosmology. I. Simulations of Foreground Contamination for HERA
H Kim, BD Nhan, JN Hewitt, NS Kern… - The Astrophysical …, 2022 - iopscience.iop.org
Detecting cosmological signals from the Epoch of Reionization (EoR) requires high-
precision calibration to isolate the cosmological signals from foreground emission. In radio …
precision calibration to isolate the cosmological signals from foreground emission. In radio …
A Bayesian approach to high-fidelity interferometric calibration–I. Mathematical formalism
PH Sims, JC Pober, JL Sievers - Monthly Notices of the Royal …, 2022 - academic.oup.com
High-fidelity radio interferometric data calibration that minimizes spurious spectral structure
in the calibrated data is essential in astrophysical applications, such as 21 cm cosmology …
in the calibrated data is essential in astrophysical applications, such as 21 cm cosmology …
An evaluation of source-blending impact on the calibration of SKA EoR experiments
C Shan, H Xu, Y Zhu, Y Zhao, SV White… - Monthly Notices of …, 2024 - academic.oup.com
Twenty-one-centimetre signals from the Epoch of Reionization (EoR) are expected to be
detected in the low-frequency radio window by the next-generation interferometers …
detected in the low-frequency radio window by the next-generation interferometers …
Diffuse radio sky models using large-scale shapelets
S Yatawatta - Astronomy & Astrophysics, 2024 - aanda.org
Aims. Sky models used in radio interferometric data-processing primarily consist of compact
and discrete radio sources. When there is a need to model large-scale diffuse structure such …
and discrete radio sources. When there is a need to model large-scale diffuse structure such …
matvis: A matrix-based visibility simulator for fast forward modelling of many-element 21 cm arrays
Detection of the faint 21 cm line emission from the Cosmic Dawn and Epoch of Reionization
will require not only exquisite control over instrumental calibration and systematics to …
will require not only exquisite control over instrumental calibration and systematics to …
Direction dependent calibration with diffuse radio sky models
S Yatawatta - arXiv preprint arXiv:2401.04428, 2024 - arxiv.org
A fundamental assumption of the data model used in radio interferometric calibration is that
the sky model only consists of compact and discrete radio sources. This assumption breaks …
the sky model only consists of compact and discrete radio sources. This assumption breaks …