5 papers
DESI DR1 Lyα 1D power spectrum: The Fast Fourier Transform estimator measurement
Corentin Ravoux, Marie-Lynn Abdul-Karim, Jean-Marc Le Goff +64
We present the one-dimensional Lyman- forest power spectrum measurement derived from the data release 1 (DR1) of the Dark Energy Spectroscopic Instrument (DESI). The measuremen…
Using Active Learning to Improve Quasar Identification for the DESI Spectra Processing Pipeline
Dylan Green, David Kirkby, J. Aguilar +51
The Dark Energy Spectroscopic Instrument (DESI) survey uses an automatic spectral classification pipeline to classify spectra. QuasarNET is a convolutional neural network used as p…
Modeling the Cosmological Lyman- Forest at the Field Level
Roger de Belsunce, Mikhail M. Ivanov, James M. Sullivan +2
The distribution of absorption lines in the spectra of distant quasars, called the Lyman- (Ly-) forest, is a unique probe of cosmology and the intergalactic medium at high…
Cosmology from Planck CMB Lensing and DESI DR1 Quasar Tomography
R. de Belsunce, A. Krolewski, S. Chiarenza +60
We present a measurement of the amplitude of matter fluctuations over the redshift range 0.8 <= z <= 3.5 from the cross correlation of over 1.2 million spectroscopic quasars select…
The ACCEL2 Project: Precision Measurements of EFT Parameters and BAO Peak Shifts for the Lyman- Forest
Roger de Belsunce, Shi-Fan Chen, Mikhail M. Ivanov +4
We present precision measurements of the bias parameters of the one-loop power spectrum model of the Lyman-alpha (Lya) forest, derived within the effective field theory of large-sc…