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HI tomographic imaging of the Cosmic Dawn and Epoch of Reionization with SKA
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We provide an overview of 21cm tomography of the Cosmic Dawn and Epoch of Reionization as possible with SKA-Low. We show why tomography is essential for studying CD/EoR and present the scales which can be imaged at different frequencies for the different phases of SKA- Low. Next we discuss the different ways in which tomographic data can be analyzed. We end with an overview of science questions which can only be answered by tomography, ranging from the characterization of individual objects to understanding the global processes shaping the Universe during the CD/EoR
Forward citations
Cited by 3 Pith papers
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A Vision Transformer-UNet hybrid emulates 3D EoR 21-cm cubes conditioned on reionization parameters, matching simulated large-scale power spectra with mild small-scale suppression.
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Probabilistic cosmological inference on HI tomographic data
A 3D CNN encoder plus a masked autoregressive flow recovers Ωm and σ8 from simulated HI tomographic data cubes at z=1 with R² ≥ 0.91 on test sets, with reduced but still useful accuracy out of distribution.
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Machine Learning and the SKA for Cosmic Dawn and the Epoch of Reionization
A multi-author overview of machine-learning algorithms proposed for instrument modelling, data analysis, simulation and inference in SKA Cosmic Dawn and Epoch of Reionization science.
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