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Tide-and-Seek: Anisotropic scale-dependent bias in the Lyman-alpha forest and designer samples
Yong Sheng Yap, William R. Coulton, Vid Iršič
Searches for primordial non-Gaussianity are powerful ways of learning new information about the early Universe. Observing primordial signals in the late Universe is challenging as,…
The impact of the IGM thermal state on the Ly flux 3D power spectrum from linear to highly non-linear scales
Tomáš Šoltinský, Gabriele Autieri, Vid Iršič +1
Recently initiated and upcoming spectroscopic surveys, such as DESI and WST, will provide more than high- quasar spectra, enabling dense sky coverage by the Ly forest.…
Physical Calibration of a Minimal Effective Field Theory of the Three-Dimensional Lyman- Forest
Gabriele Autieri, Vid Iršič, Tomáš Šoltinsky +1
We study a minimal effective field theory description of the three-dimensional Lyman- forest using the Sherwood and Sherwood--Relics hydrodynamical simulations. We model the Lym…
Forecast for the detectability of patchy hydrogen reionization in WEAVE-QSO measurements of the Lyman- forest power spectrum at redshift
Ke Ma, James S. Bolton, Vid Iršič +9
We present the first detailed forecasts for the detectability of patchy hydrogen reionization in the one-dimensional Ly forest power spectrum to be measured by the WEAVE-QSO sur…
DESI DR2 Results IV: Alcock-Paczyński Measurements from the Lyman Alpha Forest and Cosmological Constraints
DESI Collaboration, A. G. Adame, J. Aguilar +152
We present Alcock-Paczyński (AP) measurements from the full shape of Lyman- (Ly) forest correlation functions measured from the second data release (DR2) of the Dark Energy S…
Ringing of the Reionization: A first direct measurement of the intergalactic pressure smoothing scale at redshift z>4.2 as imprinted onto small-scale peculiar velocities in the Lyman-alpha forest
Vid Iršič, Matteo Viel, Martin G. Haehnelt +3
The epoch of reionization leaves detectable imprints in the thermal history of the Universe. In particular, the fast ionization fronts passing over cold gas in the cosmic web overp…
High resolution Lyman-α forest constraints on dark matter-neutrino scattering
Markus R. Mosbech, Olga Garcia-Gallego, Vid Iršič +2
We present new constraints on models of dark matter interacting with neutrino, based on high-resolution Lyman- forest data. We perform a suite of full hydrodynamical simulations…
Small-scale Lyman alpha forest cosmology with PRIYA: Constraints from XQ100 and KODIAQ-SQUAD one-dimensional flux power spectra
Ming-Feng Ho, Mahdi Qezlou, Simeon Bird +4
We present a new cosmological analysis of the small-scale Lyman alpha forest 1D flux power spectrum (P1D) using high-resolution quasar spectra from XQ100 and KODIAQ-SQUAD, interpre…
An improved model for the effect of correlated Si-III absorption on the one-dimensional Lyman- forest power spectrum
Ke Ma, James S. Bolton, Vid Irsic +2
We present an analysis of Si III absorption and its effect on the 1D Ly forest power spectrum using the Sherwood-Relics hydrodynamical simulation suite. In addition to oscillati…
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…
The case for large-scale AGN feedback in galaxy formation simulations: insights from XFABLE
Leah Bigwood, Martin A. Bourne, Vid Irsic +2
While cosmological simulations of galaxy formation have reached maturity, able to reproduce many fundamental galaxy and halo properties, no consensus has yet been reached on the im…
Constraints on Primordial Magnetic Fields from the Lyman-α forest
Mak Pavičević, Vid Iršič, Matteo Viel +5
We present the first constraints on primordial magnetic fields from the Lyman- forest using full cosmological hydrodynamic simulations. At the scales and redshifts probed by the…
DESI 2024 II: Sample Definitions, Characteristics, and Two-point Clustering Statistics
DESI Collaboration, A. G. Adame, J. Aguilar +200
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 struc…
Stirring the cosmic pot: how black hole feedback shapes the matter power spectrum in the Fable simulations
Sergio Martin-Alvarez, Vid Iršič, Sophie Koudmani +3
Understanding the impact of baryonic physics on cosmic structure formation is crucial for accurate cosmological predictions, especially as we usher in the era of large galaxy surve…
DESI 2024 III: Baryon Acoustic Oscillations from Galaxies and Quasars
DESI Collaboration, A. G. Adame, J. Aguilar +193
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…
DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations
DESI Collaboration, A. G. Adame, J. Aguilar +200
We present cosmological results from the measurement of baryon acoustic oscillations (BAO) in galaxy, quasar and Lyman- forest tracers from the first year of observations from t…
DESI 2024 IV: Baryon Acoustic Oscillations from the Lyman Alpha Forest
DESI Collaboration, A. G. Adame, J. Aguilar +196
We present the measurement of Baryon Acoustic Oscillations (BAO) from the Lyman- (Ly) forest of high-redshift quasars with the first-year dataset of the Dark Energy Spectrosc…
The 3D Lyman- Forest Power Spectrum from eBOSS DR16
Roger de Belsunce, Oliver H. E. Philcox, Vid Irsic +3
We measure the three-dimensional power spectrum (P3D) of the transmitted flux in the Lyman-a (Ly-a) forest using the complete extended Baryon Oscillation Spectroscopic Survey data…
Synthetic spectra for Lyman- forest analysis in the Dark Energy Spectroscopic Instrument
Hiram K. Herrera-Alcantar, Andrea Muñoz-Gutiérrez, Ting Tan +51
Synthetic data sets are used in cosmology to test analysis procedures, to verify that systematic errors are well understood and to demonstrate that measurements are unbiased. In th…
Particle initialization effects on Lyman- forest statistics in cosmological SPH simulations
Nabendu Kumar Khan, Girish Kulkarni, James S. Bolton +4
Confronting measurements of the Lyman- forest with cosmological hydrodynamical simulations has produced stringent constraints on models of particle dark matter and the thermal a…
Unveiling Dark Matter free-streaming at the smallest scales with high redshift Lyman-alpha forest
Vid Iršič, Matteo Viel, Martin G. Haehnelt +8
This study introduces novel constraints on the free-streaming of thermal relic warm dark matter (WDM) from Lyman- forest flux power spectra. Our analysis utilises a high-resolut…
3D Correlations in the Lyman- Forest from Early DESI Data
Calum Gordon, Andrei Cuceu, Jonás Chaves-Montero +56
We present the first measurements of Lyman- (Ly) forest correlations using early data from the Dark Energy Spectroscopic Instrument (DESI). We measure the auto-correlation of…
Optimal 1D Ly Forest Power Spectrum Estimation -- III. DESI early data
Naim Göksel Karaçaylı, Paul Martini, Julien Guy +59
The one-dimensional power spectrum of the Ly forest provides important information about cosmological and astrophysical parameters, including constraints on wa…
The Lyman- forest catalog from the Dark Energy Spectroscopic Instrument Early Data Release
César Ramírez-Pérez, Ignasi Pérez-Ràfols, Andreu Font-Ribera +67
We present and validate the catalog of Lyman- forest fluctuations for 3D analyses using the Early Data Release (EDR) from the Dark Energy Spectroscopic Instrument (DESI) survey.…