[HTML][HTML] The early data release of the Dark Energy Spectroscopic Instrument

D Collaboration, AG Adame, J Aguilar… - The Astronomical …, 2024 - escholarship.org
The Dark Energy Spectroscopic Instrument (DESI) completed its 5 month Survey Validation
in 2021 May. Spectra of stellar and extragalactic targets from Survey Validation constitute …

The DESI bright galaxy survey: final target selection, design, and validation

CH Hahn, MJ Wilson, O Ruiz-Macias… - The Astronomical …, 2023 - iopscience.iop.org
Over the next 5 yr, the Dark Energy Spectroscopic Instrument (DESI) will use 10
spectrographs with 5000 fibers on the 4 m Mayall Telescope at Kitt Peak National …

Validation of the scientific program for the Dark Energy Spectroscopic Instrument

AG Adame, J Aguilar, S Ahlen, S Alam… - The Astronomical …, 2024 - iopscience.iop.org
Studies of the geometry and energy content of the Universe, physics of cosmic expansion,
fundamental properties of standard model particles, and growth of structure remain the key …

Target selection and validation of DESI emission line galaxies

A Raichoor, J Moustakas, JA Newman… - The Astronomical …, 2023 - iopscience.iop.org
Abstract The Dark Energy Spectroscopic Instrument (DESI) will precisely constrain cosmic
expansion and the growth of structure by collecting∼ 40 million extragalactic redshifts …

A forward modeling approach to analyzing galaxy clustering with SimBIG

CH Hahn, M Eickenberg, S Ho, J Hou… - Proceedings of the …, 2023 - National Acad Sciences
We present cosmological constraints from a simulation-based inference (SBI) analysis of
galaxy clustering from the SimBIG forward modeling framework. SimBIG leverages the …

Towards testing the theory of gravity with DESI: summary statistics, model predictions and future simulation requirements

S Alam, C Arnold, A Aviles, R Bean… - … of Cosmology and …, 2021 - iopscience.iop.org
Shortly after its discovery, General Relativity (GR) was applied to predict the behavior of our
Universe on the largest scales, and later became the foundation of modern cosmology. Its …

Characterization of DESI fiber assignment incompleteness effect on 2-point clustering and mitigation methods for DR1 analysis

D Bianchi, MM Hanif, AC Rosell, J Lasker… - arXiv preprint arXiv …, 2024 - arxiv.org
We present an in-depth analysis of the fiber assignment incompleteness in the Dark Energy
Spectroscopic Instrument (DESI) Data Release 1 (DR1). This incompleteness is caused by …

Mitigation of DESI fiber assignment incompleteness effect on two-point clustering with small angular scale truncated estimators

M Pinon, A de Mattia, P McDonald, E Burtin… - arXiv preprint arXiv …, 2024 - arxiv.org
We present a method to mitigate the effects of fiber assignment incompleteness in two-point
power spectrum and correlation function measurements from galaxy spectroscopic surveys …

Field-level simulation-based inference of galaxy clustering with convolutional neural networks

P Lemos, L Parker, CH Hahn, S Ho, M Eickenberg… - Physical Review D, 2024 - APS
We present the first simulation-based inference (SBI) of cosmological parameters from field-
level analysis of galaxy clustering. Standard galaxy clustering analyses rely on analyzing …

SimBIG: mock challenge for a forward modeling approach to galaxy clustering

CH Hahn, M Eickenberg, S Ho, J Hou… - … of Cosmology and …, 2023 - iopscience.iop.org
Abstract Simulation-Based Inference of Galaxies (SimBIG) is a forward modeling framework
for analyzing galaxy clustering using simulation-based inference. In this work, we present …