The Clustering Properties of AGNs/Quasars in CatWISE2020 Catalog

We study the clustering properties of 1,307,530 AGNs/quasars in the CatWISE2020 catalog prepared using the Wide-field Infrared Survey Explorer and Near-Earth Object Wide-field Infrared Survey Explorer survey data. For angular moments ℓ ⪆ 10 (⪅18°) down to nonlinear scales, the results are in agreeme...

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Bibliographic Details
Published in:The Astrophysical journal 2023-02, Vol.943 (2), p.116
Main Authors: Tiwari, Prabhakar, Zhao, Gong-Bo, Nusser, Adi
Format: Article
Language:English
Subjects:
Active galactic nuclei
Astrophysics
Clustering
Confidence intervals
Cosmology
Dipoles
Galaxies
Infrared astronomy
Large-scale structure of the universe
Near-Earth Objects
Observational cosmology
Polls & surveys
Quasars
Red shift
Sky surveys (astronomy)
Stellar mass
Wide-field Infrared Survey Explorer
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Summary:We study the clustering properties of 1,307,530 AGNs/quasars in the CatWISE2020 catalog prepared using the Wide-field Infrared Survey Explorer and Near-Earth Object Wide-field Infrared Survey Explorer survey data. For angular moments ℓ ⪆ 10 (⪅18°) down to nonlinear scales, the results are in agreement with the standard ΛCDM cosmology, with a galaxy bias roughly matching that of the NRAO VLA Sky Survey (NVSS) AGNs. We further explore the redshift dependence of the fraction of infrared-bright AGNs on stellar mass, f IB ∼ M * α 0 + α 1 z , and find α 1 = 1.27 − 0.30 + 0.25 , ruling out a nonevolution hypothesis at a ≈4.6 σ confidence level. The results are consistent with the measurements obtained with NVSS AGNs, though considerably more precise thanks to the significantly higher number density of objects in CatWISE2020. The excess dipole and high clustering signal above angular scale ≈18° remains anomalous.
ISSN:0004-637X
1538-4357
DOI:10.3847/1538-4357/acacf8