G. Rossi

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…

Tracing the Cosmic Evolution of the Cool Circumgalactic Medium of Luminous Red Galaxies with DESI Year 1 Data

Yu-Ling Chang, Ting-Wen Lan, J. Xavier Prochaska +44

We investigate the properties of the cool circumgalactic medium (CGM) of massive galaxies and their cosmic evolution. By using the year 1 dataset of luminous red galaxies (LRGs) an…

The DESI DR1 Peculiar Velocity Survey: Mock Catalog

J. Bautista, A. J. Amsellem, V. Aronica +59

We describe the production of the official set of mock catalogs for the Dark Energy Spectroscopic Instrument Peculiar Velocity Survey (DESI-PV) Data Release 1 (DR1). Our mock catal…

The DESI DR1 Peculiar Velocity Survey: The Tully-Fisher Distance Catalog

K. Douglass, S. BenZvi, A. G. Kim +64

We calibrate the Tully-Fisher relation (TFR) using observations of spiral galaxies taken during the first year (DR1) of the DESI galaxy redshift survey. The rotational velocities o…

Parity-odd Four-Point Correlation Function from DESI Data Release 1 Luminous Red Galaxy Sample

J. Hou, R. N. Cahn, J. Aguilar +33

The parity-odd four-point function provides a unique probe of fundamental symmetries and potential new physics in the large-scale structure of the Universe. We present measurements…

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…

The DESI Single Fiber Lens Search. I. Four Thousand Spectroscopically Selected Galaxy-Galaxy Gravitational Lens Candidates

Juliana S. M. Karp, David J. Schlegel, Xiaosheng Huang +47

We present 4,110 strong gravitational lens candidates, 3,887 of which are new discoveries, selected from a sample of 5,837,154 luminous red galaxies (LRGs) observed with the Dark E…

The DESI DR1 Peculiar Velocity Survey: global zero-point and $H_{0}$ constraints

A. Carr, C. Howlett, A. J. Amsellem +55

The Dark Energy Spectroscopic Instrument (DESI) in its first Data Release (DR1) already provides more than 100,000 galaxies with relative distance measurements. The primary purpose…

The DESI DR1 peculiar velocity survey: growth rate measurements from the galaxy power spectrum

F. Qin, C. Blake, C. Howlett +63

The large-scale structure of the Universe and its evolution encapsulate a wealth of cosmological information. A powerful means of unlocking this knowledge lies in measuring the aut…

The DESI DR1 Peculiar Velocity Survey: growth rate measurements from galaxy and momentum correlation functions

R. J. Turner, C. Blake, F. Qin +61

Joint analysis of the local peculiar velocity and galaxy density fields offers a promising route to testing cosmological models of gravity. We present a measurement of the normalis…

The DESI DR1 Peculiar Velocity Survey: Fundamental Plane Catalogue

C. E. Ross, C. Howlett, J. R. Lucey +58

Measurements of peculiar velocities in the local Universe are a powerful tool to study the nature of dark energy at low ( $z < 0.1$ ) redshifts. Here we present the largest single se…

The Multi-Phase Circumgalactic Medium of DESI Emission-Line Galaxies at z~1.5

Ting-Wen Lan, J. Xavier Prochaska, J. Aguilar +39

We study the multi-phase circumgalactic medium (CGM) of emission line galaxies (ELGs) at $z \sim 1.5$ , traced by MgII $λ 2796$ , $λ 2803$ and CIV $λ 1548$ , $λ 1550$ …

Full calibration of the tomographic redshift distribution from the HSC PDR3 Shape Catalog with DESI

J. Choppin de Janvry, S. Gontcho A Gontcho, U. Seljak +53

The calibration of tomographic redshift distributions is essential for cosmological analysis of weak lensing data. In this work, we calibrate all four tomographic bins of the Hyper…

DESI DR2 Galaxy Luminosity Functions

Samuel G. Moore, Shaun Cole, Michael Wilson +54

We present galaxy luminosity functions (LFs) for the Dark Energy Spectroscopic Instrument (DESI) DR2 Bright Galaxy Survey (BGS) in the g,r,z, and w1 bands over 0.002<z<0.6. Our ana…

Direct Measurement of Galaxy Assembly Bias using DESI DR1 Data

Zhiwei Shao, Ying Zu, Andrés N. Salcedo +54

We report the first direct measurement of galaxy assembly bias, a critical systematic in cosmology, from the Dark Energy Spectroscopic Instrument (DESI) Bright Galaxy Survey. We in…

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 (…

The Draco Dwarf Spheroidal Galaxy in the First Year of DESI Data

J. Ding, C. Rockosi, Ting S. Li +40

We investigate the spatial distribution, kinematics, and metallicity of stars in the Draco dwarf spheroidal galaxy using data from the Dark Energy Spectroscopic Instrument (DESI).…

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…

DESI Strong Lens Foundry II: DESI Spectroscopy for Strong Lens Candidates

Xiaosheng Huang, Jose Carlos Inchausti, Christopher J. Storfer +59

We present the Dark Energy Spectroscopic Instrument (DESI) Strong Lensing Secondary Target Program. This is a spectroscopic follow-up program for strong gravitational lens candidat…

A New Way to Discover Strong Gravitational Lenses: Pair-wise Spectroscopic Search from DESI DR1

Yuan-Ming Hsu, Xiaosheng Huang, Christopher J. Storfer +47

We present a new method to search for strong gravitational lensing systems by pairing spectra that are close together on the sky in a spectroscopic survey. We visually inspect 26,6…

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 (…