A catalogue of 37 voids (radii 13-38 h^{-1} Mpc) and 42 knots (volumes 10^4 to 3.3x10^5 h^{-3} Mpc^3) is presented using V-web on CF4++ZOA peculiar velocities within z=0.1.
Fast and accurate Gaia-unWISE quasar mock catalogs from LPT and Eulerian bias
2 Pith papers cite this work. Polarity classification is still indexing.
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abstract
We present $100$ full-sky quasar spectrophotometric mock catalogs with smooth redshift evolution from $z=0$ to $z\sim 4$, tailored to analyze the Gaia-unWISE Quasar Catalog (Quaia). In particular, we apply a novel hierarchical nonlocal nonlinear bias scheme (Hicobian) to dark matter fields generated through Augmented Lagrangian Perturbation Theory on the lightcone (WebON code), calibrating the free parameters of the bias model on Abacus quasar HOD mock catalogs tuned to reproduce DESI Early Data Release observations in real and redshift space. After having obtained such accurate spectroscopic catalogs, we inject in the mocks the observational effects characterizing the Quaia catalog: (i) spectrophotometric redshift uncertainties, (ii) the angular selection function, and (iii) the redshift number counts distribution. We assess the accuracy of our catalogs by validating a number of summary statistics: the full-sky QSO maps, the redshift uncertainty distributions as a function of redshift, the redshift $n(z)$ distribution, the angular power spectra and their normalized covariance matrices, and the angular two-point correlation functions. We find excellent agreement between these metrics from the mocks and from the Quaia catalog. We publicly release the mock catalogs to the community.
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UNVERDICTED 2representative citing papers
Using 708,483 quasars at 0.8<z<2.2 from Quaia, the authors identify 12,842 voids and 41,111 clusters whose radii, densities and profiles agree with 50 mock catalogues to within 5-10%, with no ultra-large structures exceeding mock expectations.
citing papers explorer
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A local Universe catalogue of structures and voids dynamically identified using Cosmic-Flows4++ZOA peculiar velocities
A catalogue of 37 voids (radii 13-38 h^{-1} Mpc) and 42 knots (volumes 10^4 to 3.3x10^5 h^{-3} Mpc^3) is presented using V-web on CF4++ZOA peculiar velocities within z=0.1.
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Tracing the high-z cosmic web with Quaia: catalogues of voids and clusters in the quasar distribution
Using 708,483 quasars at 0.8<z<2.2 from Quaia, the authors identify 12,842 voids and 41,111 clusters whose radii, densities and profiles agree with 50 mock catalogues to within 5-10%, with no ultra-large structures exceeding mock expectations.