Abstract The standard Λ Cold Dark Matter (ΛCDM) cosmological model provides a good
description of a wide range of astrophysical and cosmological data. However, there are a …

A number of challenges to the standard Λ CDM model have been emerging during the past
few years as the accuracy of cosmological observations improves. In this review we discuss …

We present cosmological results from the measurement of baryon acoustic oscillations
(BAO) in galaxy, quasar and Lyman-α forest tracers from the first year of observations from …

We present cosmological constraints from a gravitational lensing mass map covering 9400
deg 2 reconstructed from measurements of the cosmic microwave background (CMB) made …

Abstract The Dark Energy Spectroscopic Instrument (DESI) was designed to conduct a
survey covering 14,000 deg 2 over 5 yr to constrain the cosmic expansion history through …

This paper documents the seventeenth data release (DR17) from the Sloan Digital Sky
Surveys; the fifth and final release from the fourth phase (SDSS-IV). DR17 contains the …

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 …

We describe the spectroscopic data processing pipeline of the Dark Energy Spectroscopic
Instrument (DESI), which is conducting a redshift survey of about 40 million galaxies and …

We present the measurement of Baryon Acoustic Oscillations (BAO) from the Lyman-α (Lyα)
forest of high-redshift quasars with the first-year dataset of the Dark Energy Spectroscopic …

The Sloan Digital Sky Surveys (SDSS) have been almost continuously observing the skies
for over 20 yr, since the project began with a first phase in 1998 (SDSS-I; York et al. 2000) …