H I intensity mapping with MeerKAT: Power spectrum detection in cross-correlation with WiggleZ galaxies

Simple item page
dc.contributor.authorCunnington, Steven
dc.contributor.authorLi, Yichao
dc.contributor.authorSantos, Mario G.
dc.date.accessioned2023-03-16T09:29:00Z
dc.date.available2023-03-16T09:29:00Z
dc.date.issued2023
dc.description.abstractWe present a detection of correlated clustering between MeerKAT radio intensity maps and galaxies from the WiggleZ Dark Energy Survey. We find a 7.7σ detection of the cross-correlation power spectrum, the amplitude of which is proportional to the product of the HI density fraction (⁠ΩHI ⁠), HI bias (⁠bHI ⁠), and the cross-correlation coefficient (r). We therefore obtain the constraint ΩHIbHIr=[0.86±0.10(stat)±0.12(sys)]×10−3 ⁠, at an effective scale of keff ∼ 0.13hMpc−1 ⁠. The intensity maps were obtained from a pilot survey with the MeerKAT telescope, a 64-dish pathfinder array to the SKA Observatory (SKAO). The data were collected from 10.5 h of observations using MeerKAT’s L-band receivers over six nights covering the 11 h field of WiggleZ, in the frequency range 1015–973 MHz (0.400 <z< 0.459 in redshift).en_US
dc.identifier.citationCunnington, S. et al. (2023). H I intensity mapping with MeerKAT: Power spectrum detection in cross-correlation with WiggleZ galaxies. Monthly Notices of the Royal Astronomical Society, 518(4), 6262–6272. https://doi.org/10.1093/mnras/stac3060en_US
dc.identifier.issn1365-2966
dc.identifier.urihttps://doi.org/10.1093/mnras/stac3060
dc.identifier.urihttp://hdl.handle.net/10566/8603
dc.language.isoenen_US
dc.publisherOxford University Pressen_US
dc.subjectPhysicsen_US
dc.subjectAstronomyen_US
dc.subjectCosmologyen_US
dc.subjectDark energyen_US
dc.subjectRadio frequenciesen_US
dc.titleH I intensity mapping with MeerKAT: Power spectrum detection in cross-correlation with WiggleZ galaxiesen_US
dc.typeArticleen_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
cunnington_h i intensity mapping with meerkat_2023.pdf
Size:
1.43 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Research Articles (Physics)