Alejandro Avilés
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View article: Enhancing DESI DR1 full-shape analyses using HOD-informed priors
Enhancing DESI DR1 full-shape analyses using HOD-informed priors Open
We present an analysis of DESI Data Release 1 (DR1) that incorporates Halo Occupation Distribution (HOD)-informed priors into Full-Shape (FS) modeling of the power spectrum based on cosmological perturbation theory (PT). By leveraging phys…
View article: Extended dark energy analysis using DESI DR2 BAO measurements
Extended dark energy analysis using DESI DR2 BAO measurements Open
We conduct an extended analysis of dark energy constraints, in support of the findings of the Dark Energy Spectroscopic Instrument (DESI) second data release cosmology key paper, including DESI data, Planck cosmic microwave background obse…
View article: Non-Gaussian statistics in galaxy weak lensing: compressed three-point correlations and cosmological forecasts
Non-Gaussian statistics in galaxy weak lensing: compressed three-point correlations and cosmological forecasts Open
Building on previous developments of a harmonic decomposition framework for computing the three-point correlation function (3PCF) of projected scalar fields over the sky, this work investigates how much cosmological information is containe…
View article: DESI 2024 V: Full-Shape galaxy clustering from galaxies and quasars
DESI 2024 V: Full-Shape galaxy clustering from galaxies and quasars Open
We present the measurements and cosmological implications of the galaxy two-point clustering using over 4.7 million unique galaxy and quasar redshifts in the range 0.1 < z < 2.1 divided into six redshift bins over a ∼ 7,500 square degree f…
View article: Modified gravity constraints from the full shape modeling of clustering measurements from DESI 2024
Modified gravity constraints from the full shape modeling of clustering measurements from DESI 2024 Open
We present cosmological constraints on deviations from general relativity (GR) from the first-year of clustering observations from the Dark Energy Spectroscopic Instrument (DESI) in combination with other available datasets including the C…
View article: Constraints on neutrino physics from DESI DR2 BAO and DR1 full shape
Constraints on neutrino physics from DESI DR2 BAO and DR1 full shape Open
The Dark Energy Spectroscopic Instrument (DESI) Collaboration has obtained robust measurements of baryon acoustic oscillations in the redshift range 0.1 < z < 4.2 , based on the Lyman- α forest and galaxies from data release 2. We comb…
View article: Validation of the DESI DR2 measurements of baryon acoustic oscillations from galaxies and quasars
Validation of the DESI DR2 measurements of baryon acoustic oscillations from galaxies and quasars Open
The Dark Energy Spectroscopic Instrument (DESI) Data Release 2 (DR2) galaxy and quasar clustering data represents a significant expansion of data from Data Release 1 (DR1), providing improved statistical precision in baryon acoustic oscill…
View article: Construction of the damped <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:mi>Ly</mml:mi> <mml:mi>α</mml:mi> </mml:mrow> </mml:math> absorber catalog for DESI DR2 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:mrow> <mml:mrow> <mml:mi>Ly</mml:mi> <mml:mi>α</mml:mi> </mml:mrow> </mml:mrow> </mml:mrow> </mml:math> BAO
Construction of the damped absorber catalog for DESI DR2 BAO Open
We present the Damped Ly α Toolkit for automated detection and characterization of damped Ly α absorbers (DLAs) in quasar spectra. Our method uses quasar spectral templates with and without absorption from intervening DLAs to recon…
View article: DESI 2024 VII: cosmological constraints from the full-shape modeling of clustering measurements
DESI 2024 VII: cosmological constraints from the full-shape modeling of clustering measurements Open
We present cosmological results from the measurement of clustering of galaxy, quasar and Lyman-α forest tracers from the first year of observations with the Dark Energy Spectroscopic Instrument (DESI Data Release 1). We adopt the full-shap…
View article: DESI 2024 II: sample definitions, characteristics, and two-point clustering statistics
DESI 2024 II: sample definitions, characteristics, and two-point clustering statistics Open
We present the samples of galaxies and quasars used for DESI 2024 cosmological analyses, drawn from the DESI Data Release 1 (DR1). We describe the construction of large-scale structure (LSS) catalogs from these samples, which include match…
View article: Cosmological implications of DESI DR2 BAO measurements in light of the latest ACT DR6 CMB data
Cosmological implications of DESI DR2 BAO measurements in light of the latest ACT DR6 CMB data Open
We report cosmological results from the Dark Energy Spectroscopic Instrument (DESI) measurements of baryon acoustic oscillations (BAO) when combined with recent data from the Atacama Cosmology Telescope (ACT). By jointly analyzing ACT and …
View article: Non-Gaussian statistics in galaxy weak lensing: compressed three-point correlations and cosmological forecasts
Non-Gaussian statistics in galaxy weak lensing: compressed three-point correlations and cosmological forecasts Open
Building on previous developments of a harmonic decomposition framework for computing the three-point correlation function (3PCF) of projected scalar fields over the sky, this work investigates how much cosmological information is containe…
View article: Positive Neutrino Masses with DESI DR2 via Matter Conversion to Dark Energy
Positive Neutrino Masses with DESI DR2 via Matter Conversion to Dark Energy Open
The Dark Energy Spectroscopic Instrument (DESI) is a massively parallel spectroscopic survey on the Mayall telescope at Kitt Peak, which has released measurements of baryon acoustic oscillations determined from over 14 million extragalacti…
View article: Origin of Stabilization of Ligand-Centered Mixed Valence Ruthenium Azopyridine Complexes: DFT Insights for Neuromorphic Applications
Origin of Stabilization of Ligand-Centered Mixed Valence Ruthenium Azopyridine Complexes: DFT Insights for Neuromorphic Applications Open
Redox-driven conductance changes are critical processes in molecular- and coordination-complex-based memristive thin films and devices that are envisioned for neuromorphic technologies, but fundamental mechanisms of conductance switching a…
View article: DESI DR2 results. II. Measurements of baryon acoustic oscillations and cosmological constraints
DESI DR2 results. II. Measurements of baryon acoustic oscillations and cosmological constraints Open
We present baryon acoustic oscillation (BAO) measurements from more than 14 million galaxies and quasars drawn from the Dark Energy Spectroscopic Instrument (DESI) Data Release 2 (DR2), based on three years of operation. For cosmology infe…
View article: Construction of the Damped Ly$\alpha$ Absorber Catalog for DESI DR2 Ly$\alpha$ BAO
Construction of the Damped Ly$\alpha$ Absorber Catalog for DESI DR2 Ly$\alpha$ BAO Open
We present the Damped Ly$\alpha$ Toolkit for automated detection and characterization of Damped Ly$\alpha$ absorbers (DLA) in quasar spectra. Our method uses quasar spectral templates with and without absorption from intervening DLAs to re…
View article: DESI 2024 III: baryon acoustic oscillations from galaxies and quasars
DESI 2024 III: baryon acoustic oscillations from galaxies and quasars Open
We present the DESI 2024 galaxy and quasar baryon acoustic oscillations (BAO) measurements using over 5.7 million unique galaxy and quasar redshifts in the range 0.1 < z < 2.1. Divided by tracer type, we utilize 300,017 galaxies from the m…
View article: Validation of the DESI DR2 Ly$\alpha$ BAO analysis using synthetic datasets
Validation of the DESI DR2 Ly$\alpha$ BAO analysis using synthetic datasets Open
The second data release (DR2) of the Dark Energy Spectroscopic Instrument (DESI), containing data from the first three years of observations, doubles the number of Lyman-$\alpha$ (Ly$\alpha$) forest spectra in DR1 and it provides the large…
View article: DESI DR2 Results I: Baryon Acoustic Oscillations from the Lyman Alpha Forest
DESI DR2 Results I: Baryon Acoustic Oscillations from the Lyman Alpha Forest Open
We present the Baryon Acoustic Oscillation (BAO) measurements with the Lyman-alpha (LyA) forest from the second data release (DR2) of the Dark Energy Spectroscopic Instrument (DESI) survey. Our BAO measurements include both the auto-correl…
View article: Validation of the DESI DR2 Measurements of Baryon Acoustic Oscillations from Galaxies and Quasars
Validation of the DESI DR2 Measurements of Baryon Acoustic Oscillations from Galaxies and Quasars Open
The Dark Energy Spectroscopic Instrument (DESI) data release 2 (DR2) galaxy and quasar clustering data represents a significant expansion of data from DR1, providing improved statistical precision in BAO constraints across multiple tracers…
View article: DESI 2024 VI: cosmological constraints from the measurements of baryon acoustic oscillations
DESI 2024 VI: cosmological constraints from the measurements of baryon acoustic oscillations Open
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 the Dark Energy Spectroscopic Instrument (DESI), to be releas…
View article: Comparing Compressed and Full-Modeling analyses with FOLPS: implications for DESI 2024 and beyond
Comparing Compressed and Full-Modeling analyses with FOLPS: implications for DESI 2024 and beyond Open
The Dark Energy Spectroscopic Instrument (DESI) will provide unprecedented information about the large-scale structure of our Universe. In this work, we study the robustness of the theoretical modelling of the power spectrum of Folps , a n…
View article: An analysis of parameter compression and Full-Modeling techniques with Velocileptors for DESI 2024 and beyond
An analysis of parameter compression and Full-Modeling techniques with Velocileptors for DESI 2024 and beyond Open
In anticipation of forthcoming data releases of current and future spectroscopic surveys, we present the validation tests and analysis of systematic effects within velocileptors modeling pipeline when fitting mock data from the AbacusSummi…
View article: A comparison of effective field theory models of redshift space galaxy power spectra for DESI 2024 and future surveys
A comparison of effective field theory models of redshift space galaxy power spectra for DESI 2024 and future surveys Open
In preparation for the next generation of galaxy redshift surveys, and in particular the year-one data release from the Dark Energy Spectroscopic Instrument (DESI), we investigate the consistency of a variety of effective field theory mode…
View article: DESI 2024 IV: Baryon Acoustic Oscillations from the Lyman alpha forest
DESI 2024 IV: Baryon Acoustic Oscillations from the Lyman alpha forest Open
We present the measurement of Baryon Acoustic Oscillations (BAO) from the Lyman- α (Ly α ) forest of high-redshift quasars with the first-year dataset of the Dark Energy Spectroscopic Instrument (DESI). Our analysis uses over 420 000 Ly α …
View article: Full Modeling and parameter compression methods in configuration space for DESI 2024 and beyond
Full Modeling and parameter compression methods in configuration space for DESI 2024 and beyond Open
In the contemporary era of high-precision spectroscopic surveys, led by projects like DESI, there is an increasing demand for optimizing the extraction of cosmological information from clustering data. This work conducts a thorough compari…
View article: A comparison between ShapeFit compression and Full-Modelling method with PyBird for DESI 2024 and beyond
A comparison between ShapeFit compression and Full-Modelling method with PyBird for DESI 2024 and beyond Open
DESI aims to provide one of the tightest constraints on cosmological parameters by analysing the clustering of more than thirty million galaxies. However, obtaining such constraints requires special care in validating the methodology and e…
View article: Modeling the 3-point correlation function of projected scalar fields on the sphere
Modeling the 3-point correlation function of projected scalar fields on the sphere Open
One of the main obstacles for the signal extraction of the three point correlation function using photometric surveys, such as the Rubin Observatory Legacy Survey of Space and Time (LSST), will be the prohibitive computation time required …
View article: DESI 2024 V: Full-Shape Galaxy Clustering from Galaxies and Quasars
DESI 2024 V: Full-Shape Galaxy Clustering from Galaxies and Quasars Open
We present the measurements and cosmological implications of the galaxy two-point clustering using over 4.7 million unique galaxy and quasar redshifts in the range $0.1
View article: Testing gravity with the full-shape galaxy power spectrum: first constraints on scale-dependent modified gravity
Testing gravity with the full-shape galaxy power spectrum: first constraints on scale-dependent modified gravity Open
Since the discovery of the accelerated expansion of the Universe in 1998, modified gravity (MG) theories have attracted considerable attention as alternatives to dark energy (DE). While distinguishing the effects of MG from those of DE usi…