Revealing cosmological fluctuations in 21 cm intensity maps with MeerKLASS: from maps to power spectra

Astrophysics and Space Science 2026 Open access

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Authors: Steven Cunnington, Matilde Barberi-Squarotti, José Luis Bernal, Stefano Camera, Isabella P. Carucci, Zhaoting Chen, José Fonseca, Mario G. Santos, Marta Spinelli, Jingying Wang, Laura Wolz
DOI: 10.1007/s10509-026-04547-7
Cited by: 1
References: 146

Abstract

Abstract Mapping the integrated 21 cm emission line from dark matter-tracing neutral hydrogen gas is the primary science goal for MeerKLASS (MeerKAT’s Large Area Synoptic Survey). Prior to the arrival of MeerKAT, this intensity mapping technique had only been tested on a couple of pre-existing single-dish radio telescopes with a handful of observational hours with which to make early pioneering detections. The 64-dish MeerKAT array, precursor to the SKA Observatory (SKAO), can scan the sky in auto-correlation (or single-dish ) mode and perform intensity mapping across large sky areas, presenting the exciting potential for a wide area ( ${\gtrsim }\,10{,}000\,{\mathrm{deg}}^{2}$ ≳ 10 , 000 deg 2 ) spectroscopic survey across redshift $0.4\,{

Fields of Study & Subjects

Radio Astronomy Observations and Technology Galaxies: Formation Evolution Phenomena Cosmology and Gravitation Theories

Publication details

Journal / source
Astrophysics and Space Science
Publisher
Springer Science and Business Media LLC
Volume
371
Issue
2
Publication date
1 February 2026
Language
EN