Machine learning for observational cosmology

K Moriwaki, T Nishimichi… - Reports on Progress in …, 2023 - iopscience.iop.org
An array of large observational programs using ground-based and space-borne telescopes
is planned in the next decade. The forthcoming wide-field sky surveys are expected to …

Spectroscopic confirmation of two luminous galaxies at a redshift of 14

S Carniani, K Hainline, F D'Eugenio, DJ Eisenstein… - Nature, 2024 - nature.com
The first observations of the James Webb Space Telescope (JWST) have revolutionized our
understanding of the Universe by identifying galaxies at redshift z≈ 13 (refs.,–). In addition …

JADES imaging of GN-z11: revealing the morphology and environment of a luminous galaxy 430 Myr after the Big Bang

S Tacchella, DJ Eisenstein, K Hainline… - The Astrophysical …, 2023 - iopscience.iop.org
We present JWST NIRCam nine-band near-infrared imaging of the luminous z= 10.6 galaxy
GN-z11 from the JWST Advanced Deep Extragalactic Survey of the GOODS-N field. We find …

Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic Star Formation Rate Density 300 Myr after the Big Bang

B Robertson, BD Johnson, S Tacchella… - The Astrophysical …, 2024 - iopscience.iop.org
We characterize the earliest galaxy population in the JADES Origins Field, the deepest
imaging field observed with JWST. We make use of ancillary Hubble Space Telescope …

Consistent lensing and clustering in a low-S8 Universe with BOSS, DES Year 3, HSC Year 1, and KiDS-1000

A Amon, NC Robertson, H Miyatake… - Monthly Notices of …, 2023 - academic.oup.com
We evaluate the consistency between lensing and clustering based on measurements from
Baryon Oscillation Spectroscopic Survey combined with galaxy–galaxy lensing from Dark …

Stringent σ8 constraints from small-scale galaxy clustering using a hybrid MCMC + emulator framework

S Yuan, LH Garrison, DJ Eisenstein… - Monthly Notices of the …, 2022 - academic.oup.com
We present a novel simulation-based hybrid emulator approach that maximally derives
cosmological and Halo Occupation Distribution (HOD) information from non-linear galaxy …

compaso: A new halo finder for competitive assignment to spherical overdensities

B Hadzhiyska, D Eisenstein, S Bose… - Monthly Notices of …, 2022 - academic.oup.com
We describe a new method (compaso) for identifying groups of particles in cosmological N-
body simulations. compaso builds upon existing spherical overdensity (SO) algorithms by …

The MillenniumTNG Project: high-precision predictions for matter clustering and halo statistics

C Hernández-Aguayo, V Springel… - Monthly Notices of …, 2023 - academic.oup.com
Cosmological inference with large galaxy surveys requires theoretical models that combine
precise predictions for large-scale structure with robust and flexible galaxy formation …

Full-shape analysis with simulation-based priors: Constraints on single field inflation from BOSS

MM Ivanov, C Cuesta-Lazaro, S Mishra-Sharma… - Physical Review D, 2024 - APS
Perturbative, or effective field theory (EFT)-based, full-shape analyses of galaxy clustering
data involve “nuisance parameters” to capture various observational effects such as the …

First detection of the BAO signal from early DESI data

J Moon, D Valcin, M Rashkovetskyi… - Monthly Notices of …, 2023 - academic.oup.com
We present the first detection of the baryon acoustic oscillations (BAOs) signal obtained
using unblinded data collected during the initial 2 months of operations of the Stage-IV …