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View article: Validation of the DESI-DR1 3x2-pt analysis: scale cut and shear ratio tests
Validation of the DESI-DR1 3x2-pt analysis: scale cut and shear ratio tests Open
Combined survey analyses of galaxy clustering and weak gravitational lensing (3x2-pt studies) will allow new and accurate tests of the standard cosmological model. However, careful validation is necessary to ensure that these cosmological …
View article: Testing gravitational physics by combining DESI DR1 and weak lensing datasets using the E_G estimator
Testing gravitational physics by combining DESI DR1 and weak lensing datasets using the E_G estimator Open
The action of gravitational physics across space-time creates observable signatures in the behaviour of light and matter. We perform combined-probe studies using data from the Baryon Oscillation Spectroscopic Survey (BOSS) and Dark Energy …
View article: Intrinsic alignment demographics for next-generation lensing: Revealing galaxy property trends with DESI Y1 direct measurements
Intrinsic alignment demographics for next-generation lensing: Revealing galaxy property trends with DESI Y1 direct measurements Open
We present direct measurements of the intrinsic alignments (IA) of over 2 million spectroscopic galaxies using DESI Data Release 1 and imaging from four lensing surveys: DES, HSC, KiDS, and SDSS. In this uniquely data-rich regime, we take …
View article: Lensing Without Borders: Measurements of galaxy-galaxy lensing and projected galaxy clustering in DESI DR1
Lensing Without Borders: Measurements of galaxy-galaxy lensing and projected galaxy clustering in DESI DR1 Open
We present Galaxy-Galaxy Lensing measurements obtained by cross-correlating spectroscopically observed galaxies from the first data release of the Dark Energy Spectroscopic Instrument (DESI) with source galaxies from the Hyper Suprime-Cam …
View article: Data Release 1 of the Dark Energy Spectroscopic Instrument
Data Release 1 of the Dark Energy Spectroscopic Instrument Open
In 2021 May the Dark Energy Spectroscopic Instrument (DESI) collaboration began a 5-year spectroscopic redshift survey to produce a detailed map of the evolving three-dimensional structure of the universe between $z=0$ and $z\approx4$. DES…
View article: The DESI-Lensing Mock Challenge: large-scale cosmological analysis of 3x2-pt statistics
The DESI-Lensing Mock Challenge: large-scale cosmological analysis of 3x2-pt statistics Open
The current generation of large galaxy surveys will test the cosmological model by combining multiple types of observational probes. Realising the statistical promise of these new datasets requires rigorous attention to all aspects of anal…
View article: The DESI-Lensing Mock Challenge: large-scale cosmological analysis of 3x2-pt statistics
The DESI-Lensing Mock Challenge: large-scale cosmological analysis of 3x2-pt statistics Open
The current generation of large galaxy surveys will test the cosmological model by combining multiple types of observational probes. Realising the statistical promise of these new datasets requires rigorous attention to all aspects of anal…
View article: Cosmology with shear ratios: a joint study of weak lensing and spectroscopic redshift datasets
Cosmology with shear ratios: a joint study of weak lensing and spectroscopic redshift datasets Open
The ratio of the average tangential shear signal of different weak lensing source populations around the same lens galaxies, also known as a shear ratio, provides an important test of lensing systematics and a potential source of cosmologi…
View article: Redshift evolution and covariances for joint lensing and clustering studies with DESI Y1
Redshift evolution and covariances for joint lensing and clustering studies with DESI Y1 Open
Galaxy–galaxy lensing (GGL) and clustering measurements from the Dark Energy Spectroscopic Instrument Year 1 (DESI Y1) data set promise to yield unprecedented combined-probe tests of cosmology and the galaxy–halo connection. In such analys…
View article: Systematic Effects in Galaxy-Galaxy Lensing with DESI
Systematic Effects in Galaxy-Galaxy Lensing with DESI Open
The Dark Energy Spectroscopic Instrument (DESI) survey will measure spectroscopic redshifts for millions of galaxies across roughly of the sky. Cross-correlating targets in the DESI survey with complementary imaging surveys allo…
View article: Cosmology with shear ratios: a joint study of weak lensing and spectroscopic redshift datasets
Cosmology with shear ratios: a joint study of weak lensing and spectroscopic redshift datasets Open
The ratio of the average tangential shear signal of different weak lensing source populations around the same lens galaxies, also known as a shear ratio, provides an important test of lensing systematics and a potential source of cosmologi…
View article: Synthetic light-cone catalogues of modern redshift and weak lensing surveys with <scp>abacussummit</scp>
Synthetic light-cone catalogues of modern redshift and weak lensing surveys with <span>abacussummit</span> Open
The joint analysis of different cosmological probes, such as galaxy clustering and weak lensing, can potentially yield invaluable insights into the nature of the primordial Universe, dark energy, and dark matter. However, the development o…
View article: Synthetic light cone catalogues of modern redshift and weak lensing surveys with AbacusSummit
Synthetic light cone catalogues of modern redshift and weak lensing surveys with AbacusSummit Open
The joint analysis of different cosmological probes, such as galaxy clustering and weak lensing, can potentially yield invaluable insights into the nature of the primordial Universe, dark energy and dark matter. However, the development of…
View article: Constraints on Dark Energy Models in Cosmology from Double-Source Plane Strong Lensing System
Constraints on Dark Energy Models in Cosmology from Double-Source Plane Strong Lensing System Open
We performed an investigation of the possibility of constraining the dark energy models such as w-cold dark matter, holographic dark energy, and Ricci dark energy, using a special type of Einstein ring system, called as double-source plane…
View article: Constraints on the total mass and mass hierarchy of neutrinos from cosmological observations with bayesian analysis
Constraints on the total mass and mass hierarchy of neutrinos from cosmological observations with bayesian analysis Open
In the standard model neutrinos consist of three species (flavors) and are massless. However, solar neutrino problem that was solved by neutrino oscillations requires that neutrinos have non-zero masses. Another support for non-zero neutri…