Search Results - "Niz, G"
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New Measurements of the Lyα Forest Continuum and Effective Optical Depth with LyCAN and DESI Y1 Data
Published in The Astrophysical journal (01-11-2024)“…Abstract We present the Ly α Continuum Analysis Network (LyCAN), a convolutional neural network that predicts the unabsorbed quasar continuum within the…”
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2
Correcting Turbulence-induced Errors in Fiber Positioning for the Dark Energy Spectroscopic Instrument
Published in The Astronomical journal (01-12-2024)“…Abstract Highly multiplexed, robotic, fiber-fed spectroscopic surveys are observing tens of millions of stars and galaxies. For many systems, accurate…”
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3
Archetype-based Redshift Estimation for the Dark Energy Spectroscopic Instrument Survey
Published in The Astronomical journal (01-09-2024)“…Abstract We present a computationally efficient galaxy archetype-based redshift estimation and spectral classification method for the Dark Energy Survey…”
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4
Catalog-level blinding on the bispectrum for DESI-like galaxy surveys
Published 25-10-2024“…We evaluate the performance of the catalog-level blind analysis technique (blinding) presented in Brieden et al. (2020) in the context of a fixed template…”
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5
DESI 2024: Reconstructing Dark Energy using Crossing Statistics with DESI DR1 BAO data
Published 25-10-2024“…JCAP10(2024)048 We implement Crossing Statistics to reconstruct in a model-agnostic manner the expansion history of the universe and properties of dark energy,…”
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6
Systematic Effects in Galaxy-Galaxy Lensing with DESI
Published 15-07-2024“…The Dark Energy Spectroscopic Instrument (DESI) survey will measure spectroscopic redshifts for millions of galaxies across roughly $14,000 \, \mathrm{deg}^2$…”
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7
Archetype-Based Redshift Estimation for the Dark Energy Spectroscopic Instrument Survey
Published 07-07-2024“…We present a computationally efficient galaxy archetype-based redshift estimation and spectral classification method for the Dark Energy Survey Instrument…”
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8
Optimal 1D Ly α forest power spectrum estimation – III. DESI early data
Published in Monthly notices of the Royal Astronomical Society (01-03-2024)“…ABSTRACT The 1D power spectrum P1D of the Ly α forest provides important information about cosmological and astrophysical parameters, including constraints on…”
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ForestFlow: cosmological emulation of Lyman-$\alpha$ forest clustering from linear to nonlinear scales
Published 09-09-2024“…On large scales, measurements of the Lyman-$\alpha$ forest offer insights into the expansion history of the Universe, while on small scales, these impose…”
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10
Blinding scheme for the scale-dependence bias signature of local primordial non-Gaussianity for DESI 2024
Published 31-05-2024“…The next generation of spectroscopic surveys is expected to achieve an unprecedented level of accuracy in the measurement of cosmological parameters. To avoid…”
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11
Value Added Catalog of physical properties of more than 1.3 million galaxies from the DESI Survey
Published 27-09-2024“…Aims. We present an extensive catalog of the physical properties of more than a million galaxies within the Dark Energy Spectroscopic Instrument (DESI), one of…”
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12
Correcting Turbulence-induced Errors in Fiber Positioning for the Dark Energy Spectroscopic Instrument
Published 10-07-2024“…Highly-multiplexed, robotic, fiber-fed spectroscopic surveys are observing tens of millions of stars and galaxies. For many systems, accurate positioning…”
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13
Not all lensing is low: An analysis of DESI$\times$DES using the Lagrangian Effective Theory of LSS
Published 05-07-2024“…In this work we use Lagrangian perturbation theory to analyze the harmonic space galaxy clustering signal of Bright Galaxy Survey (BGS) and Luminous Red…”
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14
Impact and mitigation of spectroscopic systematics on DESI DR1 clustering measurements
Published 27-05-2024“…The large scale structure catalogs within DESI Data Release 1 (DR1) use nearly 6 million galaxies and quasars as tracers of the large-scale structure of the…”
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15
Modified Gravity Constraints from the Full Shape Modeling of Clustering Measurements from DESI 2024
Published 18-11-2024“…We present cosmological constraints on deviations from general relativity (GR) from the first-year of clustering observations from the Dark Energy…”
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16
DESI 2024: Constraints on Physics-Focused Aspects of Dark Energy using DESI DR1 BAO Data
Published 22-05-2024“…Baryon acoustic oscillation data from the first year of the Dark Energy Spectroscopic Instrument (DESI) provide near percent-level precision of cosmic…”
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17
Validation of the DESI 2024 Lyman Alpha Forest BAL Masking Strategy
Published 15-05-2024“…Broad absorption line quasars (BALs) exhibit blueshifted absorption relative to a number of their prominent broad emission features. These absorption features…”
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18
New measurements of the Lyman-$\alpha$ forest continuum and effective optical depth with LyCAN and DESI Y1 data
Published 10-05-2024“…We present the Lyman-$\alpha$ Continuum Analysis Network (LyCAN), a Convolutional Neural Network that predicts the unabsorbed quasar continuum within the…”
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19
A comparison between Shapefit compression and Full-Modelling method with PyBird for DESI 2024 and beyond
Published 10-04-2024“…DESI aims to provide one of the tightest constraints on cosmological parameters by analysing the clustering of more than thirty million galaxies. However,…”
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20
Suppressing the sample variance of DESI-like galaxy clustering with fast simulations
Published 03-04-2024“…Ongoing and upcoming galaxy redshift surveys, such as the Dark Energy Spectroscopic Instrument (DESI) survey, will observe vast regions of sky and a wide range…”
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