Revealing cosmological fluctuations in 21cm intensity maps with MeerKLASS: from maps to power spectra
Steven Cunnington, Matilde Barberi-Squarotti, Jos’e Luis Bernal, Stefano Camera, Isabella P. Carucci, Zhaoting Chen, Jos’e Fonseca, Mario Santos, Marta Spinelli, Jingying Wang, Laura Wolz
arXiv:2510.27549v1 Announce Type: new
Abstract: Mapping the integrated 21cm 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 Square Kilometre Array Observatory (SKAO), can scan the sky in auto-correlation mode and perform intensity mapping across large sky areas, presenting the exciting potential for a wide-sky (${gtrsim},10{,}000,{rm deg}^2$) spectroscopic survey across redshift $0.4,{arXiv:2510.27549v1 Announce Type: new
Abstract: Mapping the integrated 21cm emission line from dark matter-tracing neutral hydrogen gas is the primary science goal for MeerKLASS (MeerKAT’s Large Area Synoptic Survey). Prior to the arrival of MeerKAT, this intensity mapping technique had only been tested on a couple of pre-existing single-dish radio telescopes with a handful of observational hours with which to make early pioneering detections. The 64-dish MeerKAT array, precursor to the Square Kilometre Array Observatory (SKAO), can scan the sky in auto-correlation mode and perform intensity mapping across large sky areas, presenting the exciting potential for a wide-sky (${gtrsim},10{,}000,{rm deg}^2$) spectroscopic survey across redshift $0.4,{