Stringent σ8 constraints from small-scale galaxy clustering using a hybrid MCMC + emulator framework
We present a novel simulation-based hybrid emulator approach that maximally derives
cosmological and Halo Occupation Distribution (HOD) information from non-linear galaxy …
cosmological and Halo Occupation Distribution (HOD) information from non-linear galaxy …
Going beyond the galaxy power spectrum: An analysis of BOSS data with wavelet scattering transforms
G Valogiannis, C Dvorkin - Physical Review D, 2022 - APS
We perform the first application of the wavelet scattering transform (WST) to actual galaxy
observations, through a WST analysis of the BOSS DR12 CMASS dataset. We included the …
observations, through a WST analysis of the BOSS DR12 CMASS dataset. We included the …
The DESI one-per cent survey: exploring the halo occupation distribution of luminous red galaxies and quasi-stellar objects with AbacusSummit
We present the first comprehensive halo occupation distribution (HOD) analysis of the Dark
Energy Spectroscopic Instrument (DESI) One-Percent Survey luminous red galaxy (LRG) …
Energy Spectroscopic Instrument (DESI) One-Percent Survey luminous red galaxy (LRG) …
The galaxy formation origin of the lensing is low problem
J Chaves-Montero, RE Angulo… - Monthly Notices of the …, 2023 - academic.oup.com
Recent analyses show that ΛCDM-based models optimized to reproduce the clustering of
massive galaxies overestimate their gravitational lensing by about 30 per cent, the so-called …
massive galaxies overestimate their gravitational lensing by about 30 per cent, the so-called …
The MillenniumTNG Project: the large-scale clustering of galaxies
S Bose, B Hadzhiyska, M Barrera… - Monthly Notices of …, 2023 - academic.oup.com
Modern redshift surveys are tasked with mapping out the galaxy distribution over enormous
distance scales. Existing hydrodynamical simulations, however, do not reach the volumes …
distance scales. Existing hydrodynamical simulations, however, do not reach the volumes …
Full forward model of galaxy clustering statistics with AbacusSummit light cones
Novel summary statistics beyond the standard 2-point correlation function (2PCF) are
necessary to capture the full astrophysical and cosmological information from the small …
necessary to capture the full astrophysical and cosmological information from the small …
Taming assembly bias for primordial non-Gaussianity
Primordial non-Gaussianity of the local type induces a strong scale-dependent bias on the
clustering of halos in the late-time Universe. This signature is particularly promising to …
clustering of halos in the late-time Universe. This signature is particularly promising to …
The DESI One-Percent Survey: Constructing Galaxy–Halo Connections for ELGs and LRGs Using Auto and Cross Correlations
H Gao, YP Jing, S Gui, K Xu, Y Zheng… - The Astrophysical …, 2023 - iopscience.iop.org
Abstract In the current Dark Energy Spectroscopic Instrument (DESI) survey, emission line
galaxies (ELGs) and luminous red galaxies (LRGs) are essential for mapping the dark …
galaxies (ELGs) and luminous red galaxies (LRGs) are essential for mapping the dark …
Evidence of galaxy assembly bias in SDSS DR7 galaxy samples from count statistics
We present observational constraints on the galaxy–halo connection, focusing particularly
on galaxy assembly bias from a novel combination of counts-in-cylinders statistics, P (N …
on galaxy assembly bias from a novel combination of counts-in-cylinders statistics, P (N …
Robust cosmological inference from non-linear scales with k-th nearest neighbour statistics
We present the methodology for deriving accurate and reliable cosmological constraints
from non-linear scales (Mpc) with k-th nearest neighbour (k NN) statistics. We detail our …
from non-linear scales (Mpc) with k-th nearest neighbour (k NN) statistics. We detail our …