The cosmic tetrarchy decomposes BAO-based measurements into four channels that isolate distinct assumptions to test whether the dimensionless sound-horizon ratio remains a single redshift-independent number.
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Forecasts indicate 10-sigma detection for squeezed triangles and 100-sigma for combined shapes in the 21cm-galaxy cross-bispectrum with 100 hours of SKA-Mid interferometric observations on scales 0.2 to 0.9 per Mpc.
MeerKLASS reports successful single-dish HI intensity mapping detections that validate the technique for SKAO cosmology surveys.
citing papers explorer
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The cosmic tetrarchy: four estimators breaking the assumption degeneracy in cosmological distance tensions
The cosmic tetrarchy decomposes BAO-based measurements into four channels that isolate distinct assumptions to test whether the dimensionless sound-horizon ratio remains a single redshift-independent number.
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Probing the large-scale structure with 21cm-galaxy cross-bispectrum: Estimates from simulations and forecasts for upcoming cosmological surveys
Forecasts indicate 10-sigma detection for squeezed triangles and 100-sigma for combined shapes in the 21cm-galaxy cross-bispectrum with 100 hours of SKA-Mid interferometric observations on scales 0.2 to 0.9 per Mpc.
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Single-dish HI Intensity Mapping with the SKAO: Precursor Progress with MeerKAT's Large Area Synoptic Survey (MeerKLASS)
MeerKLASS reports successful single-dish HI intensity mapping detections that validate the technique for SKAO cosmology surveys.