Cosmological parameter measurement and neutral hydrogen 21 cm sky survey with the Square Kilometre Array

Abstract

In order to precisely measure the cosmological parameters and answer the fundamental questions in cosmology, it is necessary to develop new, powerful cosmological probes, in addition to the proposed next-generation optical survey projects. The neutral hydrogen 21 cm sky surveys will provide a promising tool to study the late-universe evolution, helping shed light on the nature of dark energy. The Square Kilometre Array is the largest radio telescope in the world to be constructed in the near future, and it will push the 21 cm cosmology into a new era and greatly promote the development of cosmology in the forthcoming decades.

arXiv comment5 pages, 3 figures; published, as a paper of News & Views, in SCIENCE CHINA Physics, Mechanics & Astronomy

References in corpus (9)

• 21-cm cosmology
• The Expansion of the Universe is Faster than Expected
• Cosmology with Phase 1 of the Square Kilometre Array; Red Book 2018: Technical specifications and performance forecasts
• Gravitational wave standard sirens and cosmological parameter measurement
• Precise measurements of inflationary features with 21 cm observations
• Forecast for weighing neutrinos in cosmology with SKA
• Constraining the interaction between dark sectors with future HI intensity mapping observations
• Improving cosmological parameter estimation with the future 21 cm observation from SKA
• Real-time cosmology with SKA

Cited by in corpus (22)

• The Gravitational-Wave Physics II: Progress
• Forecast for cosmological parameter estimation with gravitational-wave standard sirens from the LISA-Taiji network
• Prospects for Constraining Interacting Dark Energy Models with 21 cm Intensity Mapping Experiments
• How can gravitational-wave standard sirens and 21 cm intensity mapping jointly provide a precise late-universe cosmological probe?
• Synergy between CSST galaxy survey and gravitational-wave observation: Inferring the Hubble constant from dark standard sirens
• Model-independent measurement of cosmic curvature with the latest $H(z)$ and SNe Ia data: A comprehensive investigation
• Impacts of gravitational-wave standard siren observations from Einstein Telescope and Cosmic Explorer on weighing neutrinos in interacting dark energy models
• A path to precision cosmology: synergy between four promising late-universe cosmological probes
• Quantifying the impacts of future gravitational-wave data on constraining interacting dark energy
• Cosmology with fast radio bursts in the era of SKA
• Prospects for measuring dark energy with 21 cm intensity mapping experiments: A joint survey strategy
• Prospects for measuring dark energy with 21 cm intensity mapping experiments
• Null test for cosmic curvature using Gaussian process
• Eliminating polarization leakage effect for neutral hydrogen intensity mapping with deep learning
• Cornering Extended Starobinsky Inflation with CMB and SKA
• HI intensity mapping with MeerKAT: forecast for delay power spectrum measurement using interferometer mode
• Prospects for Observing High-redshift Radio-loud Quasars in the SKA Era: Paving the Way for 21-cm Forest Observations
• Combining strongly lensed and unlensed fast radio bursts: To be a more precise late-universe probe
• Improving Constraint on ${\Omega }_m$ from SDSS Using Marked Correlation Functions
• Effects of Small-Scale Absorption Systems on Neutral Islands during the Late Epoch of Reionization
• A semi-cosmographic approach to study cosmological evolution in phase space
• Probing the Inflaton Potential with SKA