R. Zhou

DESI DR2 Results IV: Alcock-Paczyński Measurements from the Lyman Alpha Forest and Cosmological Constraints

DESI Collaboration, A. G. Adame, J. Aguilar +152

We present Alcock-Paczyński (AP) measurements from the full shape of Lyman- $α$ (Ly $α$ ) forest correlation functions measured from the second data release (DR2) of the Dark Energy S…

Probing the matter-dominated expansion with multi-redshift Lyman- $α$ BAO from DESI DR2

Hiram K. Herrera-Alcantar, Julien Guy, Alma X. Gonzalez-Morales +60

We present a multi-redshift Baryon Acoustic Oscillations (BAO) analysis of the DESI Data Release 2 (DR2) Lyman- $α$ (Ly $α$ ) forest, splitting the forest auto-correlation and its cro…

Clustering of high-redshift quasars with DESI DR2

M. Charles, P. Martini, A. J. Ross +46

We present clustering measurements for high-redshift quasars using data from the Dark Energy Spectroscopic Instrument Data Release 2. Our sample consists of quasars with $2.0 < z <…

The 3D clustering of Lyman Alpha Emitters measured with DESI

Haruki Ebina, Martin J. White, Rongpu Zhou +44

We present a clustering analysis of Lyman- $α$ emitters (LAEs) using spectroscopic observations from the Dark Energy Spectroscopic Instrument (DESI) of candidates selected from the…

Precision Kinematic Sunyaev--Zel'dovich Measurements Across Halo Mass and Redshift with DESI DR2 and ACT DR6: Part II. Bright Galaxy Survey and Emission-Line Galaxies

B. Hadzhiyska, S. Ferraro, F. J. Qu +50

We present the first high-significance spectroscopic stacked kinetic Sunyaev-Zel'dovich (kSZ) measurements of circumgalactic gas profiles for both Bright Galaxy Survey (BGS) and Em…

FolpsD: combining EFT and phenomenological approaches for joint power spectrum and bispectrum analyses

P. Bansal, A. Aviles, H. E. Noriega +56

We present a theoretical model for the power spectrum and bispectrum of galaxy clustering that exploits the complementarity between small-scale power spectrum information and large…

Precision Kinematic Sunyaev--Zel'dovich Measurements Across Halo Mass and Redshift with DESI DR2 and ACT DR6: Part I. Luminous Red Galaxies

F. J. Qu, B. Ried Guachalla, E. Schaan +51

We present the most precise measurements of the kinetic Sunyaev-Zel'dovich (kSZ) effect around luminous red galaxies to date, detecting the signal at $18 σ$ significance in both har…

Cosmological constraints from a joint DESI DR1 Full-Shape and DR2 BAO

D. Forero-Sánchez, H. Gil-Marín, L. Verde +61

We present a cosmological analysis combining full-shape (FS) clustering measurements from the Dark Energy Spectroscopic Instrument (DESI) DR1 with baryon acoustic oscillation (BAO)…

The Power of DESI for Photometric Redshift Calibration: A Case Study with KiDS-1000

Diana Blanco, Alexie Leauthaud, Johannes Ulf Lange +64

Accurate redshift estimates are a critical requirement for weak lensing surveys and one of the main uncertainties in constraints on dark energy and large-scale cosmic structure. In…

Clustering redshift distribution calibration of weak lensing surveys using the DESI-DR1 spectroscopic dataset

R. Ruggeri, C. Blake, J. Aguilar +63

We estimate the source redshift distribution of current weak lensing surveys by applying the clustering-based redshift calibration technique, using the galaxy redshift sample provi…

Cosmological Constraints from Full-Scale Clustering and Galaxy-Galaxy Lensing with DESI DR1

Johannes U. Lange, Alexandra Wells, Andrew Hearin +76

We present constraints on cosmic structure growth from the analysis of galaxy clustering and galaxy--galaxy lensing with galaxies from the Dark Energy Spectroscopic Instrument (DES…

Probing the environment around GW170817 with DESI: insights on galaxy group peculiar velocities for standard siren measurements

A. J. Amsellem, A. Palmese, K. Douglass +56

We present a new measurement of the Hubble constant, $H_{0}$ , following the gravitational wave event GW170817 and Dark Energy Spectroscopic Instrument (DESI) observations. A standard…

Constraining primordial non-Gaussianity from DESI DR1 quasars and Planck PR4 CMB Lensing

Sofia Chiarenza, Alex Krolewski, Marco Bonici +54

We present the first measurement of local-type primordial non-Gaussianity from the cross-correlation between $1.2$ million spectroscopically confirmed quasars from the first data r…

Joint cosmological fits to DESI-DR1 full-shape clustering and weak gravitational lensing in configuration space

A. Semenaite, C. Blake, A. Porredon +69

We present a joint $3 \times 2$ -pt cosmological analysis of auto- and cross-correlations between the Dark Energy Spectroscopic Instrument Data Release 1 (DESI-DR1) Bright Galaxy Surv…

astro-ph.CO2025★ 2 cited

DESI-DR1 $3 \times 2$ -pt analysis: consistent cosmology across weak lensing surveys

A. Porredon, C. Blake, J. U. Lange +70

We present a joint cosmological analysis of projected galaxy clustering observations from the Dark Energy Spectroscopic Instrument Data Release 1 (DESI-DR1), and overlapping weak g…

Probing cosmic velocities with the pairwise kinematic Sunyaev-Zel'dovich signal in DESI Bright Galaxy Sample DR1 and ACT DR6

B. Hadzhiyska, Y. Gong, Y. Hsu +55

We present a measurement of the pairwise kinematic Sunyaev-Zel'dovich (kSZ) signal using the Dark Energy Spectroscopic Instrument (DESI) Bright Galaxy Sample (BGS) Data Release 1 (…

astro-ph.CO2025★ 4 cited

$H_{0}$ Without the Sound Horizon (or Supernovae): A 2% Measurement in DESI DR1

E. A. Zaborowski, P. Taylor, K. Honscheid +58

The sound horizon scale $r_{s}$ is a key source of information for early-time $H_{0}$ measurements, and is therefore a common target of new physics proposed to solve the Hubble tension…

Detection of supernova magnitude fluctuations induced by large-scale structure

A. Nguyen, C. Blake, R. J. Turner +56

The peculiar velocities of supernovae and their host galaxies are correlated with the large-scale structure of the Universe, and can be used to constrain the growth rate of structu…

Validation of the DESI-DR1 3x2-pt analysis: scale cut and shear ratio tests

N. Emas, A. Porredon, C. Blake +54

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…

astro-ph.CO2025★ 2 cited

DESI DR1 Ly $α$ forest: 3D full-shape analysis and cosmological constraints

Andrei Cuceu, Hiram K. Herrera-Alcantar, Calum Gordon +75

We perform an analysis of the full shapes of Lyman- $α$ (Ly $α$ ) forest correlation functions measured from the first data release (DR1) of the Dark Energy Spectroscopic Instrument (…

Clustering analysis of medium-band selected high-redshift galaxies

H. Ebina, M. White, A. Raichoor +57

Next-generation large-scale structure spectroscopic surveys will probe cosmology at high redshifts $(2.3 < z < 3.5)$ , relying on abundant galaxy tracers such as Ly $α$ emitters (LAE…

Probing the limits of cosmological information from the Lyman- $α$ forest 2-point correlation functions

Wynne Turner, Andrei Cuceu, Paul Martini +48

The standard cosmological analysis with the Ly $α$ forest relies on a continuum fitting procedure that suppresses information on large scales and distorts the three-dimensional corr…