Galaxy alignments: Observations and impact on cosmology

D Kirk, ML Brown, H Hoekstra, B Joachimi… - Space Science …, 2015 - Springer
Galaxy shapes are not randomly oriented, rather they are statistically aligned in a way that
can depend on formation environment, history and galaxy type. Studying the alignment of …

Hyper Suprime-Cam Year 3 results: Cosmology from cosmic shear power spectra

R Dalal, X Li, A Nicola, J Zuntz, MA Strauss… - Physical Review D, 2023 - APS
We measure weak lensing cosmic shear power spectra from the 3-year galaxy shear catalog
of the Hyper Suprime-Cam (HSC) Subaru Strategic Program imaging survey. The shear …

Cosmological constraints from cosmic shear two-point correlation functions with HSC survey first-year data

T Hamana, M Shirasaki, S Miyazaki… - Publications of the …, 2020 - academic.oup.com
We present measurements of cosmic shear two-point correlation functions (TPCFs) from
Hyper Suprime-Cam Subaru Strategic Program (HSC) first-year data, and derive …

The first-year shear catalog of the Subaru Hyper Suprime-Cam Subaru strategic program survey

R Mandelbaum, H Miyatake, T Hamana… - Publications of the …, 2018 - academic.oup.com
We present and characterize the catalog of galaxy shape measurements that will be used for
cosmological weak lensing measurements in the Wide layer of the first year of the Hyper …

The MillenniumTNG Project: the impact of baryons and massive neutrinos on high-resolution weak gravitational lensing convergence maps

F Ferlito, V Springel, CT Davies… - Monthly Notices of …, 2023 - academic.oup.com
We study weak gravitational lensing convergence maps produced from the MillenniumTNG
simulations by direct projection of the mass distribution on the past backwards lightcone of a …

Dark energy survey year 3 results: Cosmology with peaks using an emulator approach

D Zürcher, J Fluri, R Sgier, T Kacprzak… - Monthly Notices of …, 2022 - academic.oup.com
We constrain the matter density Ωm and the amplitude of density fluctuations σ8 within the
ΛCDM cosmological model with shear peak statistics and angular convergence power …

A new approach to observational cosmology using the scattering transform

S Cheng, YS Ting, B Ménard… - Monthly Notices of the …, 2020 - academic.oup.com
Parameter estimation with non-Gaussian stochastic fields is a common challenge in
astrophysics and cosmology. In this paper, we advocate performing this task using the …

Non-Gaussian information from weak lensing data via deep learning

A Gupta, JMZ Matilla, D Hsu, Z Haiman - Physical Review D, 2018 - APS
Weak lensing maps contain information beyond two-point statistics on small scales. Much
recent work has tried to extract this information through a range of different observables or …

Weak lensing cosmology with convolutional neural networks on noisy data

D Ribli, BÁ Pataki, JM Zorrilla Matilla… - Monthly Notices of …, 2019 - academic.oup.com
Weak gravitational lensing is one of the most promising cosmological probes of the late
universe. Several large ongoing (DES, KiDS, HSC) and planned (LSST, Euclid, WFIRST) …

Photometric redshift with Bayesian priors on physical properties of galaxies

M Tanaka - The Astrophysical Journal, 2015 - iopscience.iop.org
We present a proof-of-concept analysis of photometric redshifts with Bayesian priors on
physical properties of galaxies. This concept is particularly suited for upcoming/on-going …