Warm Dark Matter as a solution to the small scale crisis: new constraints from high redshift Lyman-alpha forest data

Abstract

We present updated constraints on the free-streaming of warm dark matter (WDM) particles derived from an analysis of the Lya flux power spectrum measured from high-resolution spectra of 25 z > 4 quasars obtained with the Keck High Resolution Echelle Spectrometer (HIRES) and the Magellan Inamori Kyocera Echelle (MIKE) spectrograph. We utilize a new suite of high-resolution hydrodynamical simulations that explore WDM masses of 1, 2 and 4 keV (assuming the WDM consists of thermal relics), along with different physically motivated thermal histories. We carefully address different sources of systematic error that may affect our final results and perform an analysis of the Lya flux power with conservative error estimates. By using a method that samples the multi-dimensional astrophysical and cosmological parameter space, we obtain a lower limit mwdm > 3.3 keV (2sigma) for warm dark matter particles in the form of early decoupled thermal relics. Adding the Sloan Digital Sky Survey (SDSS) Lya flux power spectrum does not improve this limit. Thermal relics of masses 1 keV, 2 keV and 2.5 keV are disfavoured by the data at about the 9sigma, 4sigma and 3sigma C.L., respectively. Our analysis disfavours WDM models where there is a suppression in the linear matter power spectrum at (non-linear) scales corresponding to k=10h/Mpc which deviates more than 10% from a LCDM model. Given this limit, the corresponding "free-streaming mass" below which the mass function may be suppressed is 2x10^8 Msun/h. There is thus very little room for a contribution of the free-streaming of WDM to the solution of what has been termed the small scale crisis of cold dark matter.

20 pages, 17 figures. Accepted to PRD

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• Re-Examining Astrophysical Constraints on the Dark Matter Model
• The Effect of Thermal Velocities on Structure Formation in N-body Simulations of Warm Dark Matter
• Primordial black hole versus inflaton
• Exploring extensions to the standard cosmological model and the impact of baryons on small scales
• Relaxion Dark Matter
• Absorber Model: the Halo-like model for the Lyman-alpha forest
• Saxion Cosmology for Thermalized Gravitino Dark Matter
• Observation of the new emission line at ~3.5 keV in X-ray spectra of galaxies and galaxy clusters
• Novel Adaptive softening for collisionless N-body simulations: Eliminating spurious halos
• Efficient adiabatic hydrodynamical simulations of the high-redshift intergalactic medium
• Dark matter halos in the multicomponent model. I. Substructure
• Modeling the Lyman-$\alpha$ forest with Eulerian and SPH hydrodynamical methods
• ETHOS - an effective theory of structure formation: formation of the first haloes and their stars
• Small scale clustering of late forming dark matter
• Local Group star formation in warm and self-interacting dark matter cosmologies
• Impact of dark matter models on the EoR 21-cm signal bispectrum
• Strong lensing constraints on primordial black holes as a dark matter candidate
• Non-thermal Production of PNGB Dark Matter and Inflation
• Noiseless Gravitational Lensing Simulations
• On the growth of supermassive black holes formed from the gravitational collapse of fermionic dark matter cores
• Simple estimate of BBN sensitivity to light freeze-in dark matter
• The ages of stellar populations in a warm dark matter universe
• Structure formation in a mixed dark matter model with decaying sterile neutrino: the 3.5 keV X-ray line and the Galactic substructure
• UV Background Fluctuations and Three-Point Correlations in the Large Scale Clustering of the Lyman-alpha Forest
• The Milky Way, Coming into Focus: Precision Astrometry Probes its Evolution, and its Dark Matter
• The edge of galaxy formation III: The effects of warm dark matter on Milky Way satellites and field dwarfs
• Mapping Lyman-alpha forest three-dimensional large scale structure in real and redshift space
• Small scale structures in coupled scalar field dark matter
• Experimental targets for dark photon dark matter
• Warm Dark Haloes Accretion Histories and their Gravitational Signatures
• Probing Reionization and Early Cosmic Enrichment with the MgII Forest
• Probing dark matter interactions with 21cm observations
• Synthetic spectra for Lyman-$\alpha$ forest analysis in the Dark Energy Spectroscopic Instrument
• Non-linear clustering during the BEC dark matter phase transition
• Non-thermal production of lepton asymmetry and dark matter in minimal seesaw with right handed neutrino induced Higgs potential
• COZMIC. I. Cosmological Zoom-in Simulations with Initial Conditions Beyond Cold Dark Matter
• Dark matter and observable Lepton Flavour Violation
• Possible evidence for a large-scale enhancement in the Lyman-$\alpha$ forest power spectrum at redshift $\text{z}\ge 4$
• Stealth decaying spin-1 dark matter
• The Sejong Suite: Cosmological Hydrodynamical Simulations with Massive Neutrinos, Dark Radiation, and Warm Dark Matter
• Colder Freeze-in Axinos Decaying into Photons
• A common surface-density scale for the Milky Way and Andromeda dwarf satellites as a constraint on dark matter models
• Constraining warm dark matter mass with cosmic reionization and gravitational wave
• Structural properties of artificial halos in non-standard dark matter simulations
• Semi-Analytic Galaxy Formation in Massive Neutrino Cosmologies
• Inflection-point Inflation and Dark Matter Redux
• The ACCEL2 Project: Precision Measurements of EFT Parameters and BAO Peak Shifts for the Lyman-$\alpha$ Forest
• New generation low-energy probes for ultralight axion and scalar dark matter
• Non-equilibrium temperature evolution of ionization fronts during the Epoch of Reionization
• Degeneracies between baryons and dark matter: the challenge of constraining the nature of dark matter with JWST
• Isotropic extragalactic flux from dark matter annihilations: lessons from interacting dark matter scenarios
• Mass assembly history and infall time of the Fornax dwarf spheroidal galaxy
• Enhanced n-body annihilation of dark matter and its indirect signatures
• Measurement of the small-scale 3D Lyman-$\alpha$ forest power spectrum
• A measurement of the Lyman-beta forest power spectrum and its cross with the Lyman-alpha forest in X-Shooter XQ-100
• Narrowing the window of inflationary magnetogenesis
• The Cosmological Parameters (2023)
• Automatic Kalman-Filter-based Wavelet Shrinkage Denoising of 1D Stellar Spectra
• Degenerate Fermion Dark Matter from a Broken $U(1{)}_{\mathrm{B}-\mathrm{L}}$ Gauge Symmetry
• On the applicability of approximations used in calculation of spectrum of Dark Matter particles produced in particle decays
• Matching the mass function of Milky Way satellites in competing dark matter models
• Mixed Warm Dark Matter Constraints using Milky Way Satellite Galaxy Counts
• Study of a viscous $\Lambda$WDM model: Near equilibrium condition, entropy production, and cosmological constraints
• Decaying axinolike dark matter: Discriminative solution to small-scale issues
• A Multi-Fidelity Emulator for the Lyman-$\alpha$ Forest Flux Power Spectrum
• Cosmological phase transitions, gravitational waves and self-interacting dark matter in the singlet extension of MSSM
• Broaden the search for dark matter
• Revisiting (s)neutrino dark matter in natural SUSY
• Using the redshift evolution of the Lyman-$\alpha$ effective opacity as a probe of dark matter models
• Reducing cosmological small scale structure via a large dark matter-neutrino interaction: constraints and consequences
• Targeted Likelihood-Free Inference of Dark Matter Substructure in Strongly-Lensed Galaxies
• Constraining the nature of dark matter with the star formation history of the faintest Local Group dwarf galaxy satellites
• Signatures of Light Massive Relics on nonlinear structure formation
• Stronger Constraints on Primordial Black Holes as Dark Matter Derived from the Thermal Evolution of the Intergalactic Medium over the Last Twelve Billion Years
• Demystifying Freeze-In Dark Matter at the LHC
• Nonlinear growth of structure in cosmologies with damped matter fluctuations
• Acausality in Superfluid Dark Matter and MOND-like Theories
• Roles of sterile neutrinos in particle physics and cosmology
• Dark matter self-interactions in the matter power spectrum
• Freeze-In of radiative keV-scale neutrino dark matter from a new $\text{U}(1{)}_{\text{B-L}}$
• Gravitational-wave event rates as a new probe for dark matter microphysics
• The local dark matter distribution in self-interacting dark matter halos
• Dark matter production through a non-thermal flavon portal
• Conformal Portal to Dark Matter
• Hunting Primordial Black Hole Dark Matter in Lyman-$\alpha$ Forest
• Jet substructure probe to unfold singlet-doublet dark matter in the presence of non-standard cosmology
• Probing helium reionization with kinetic Sunyaev Zel'dovich tomography
• Can the Low Redshift Lyman Alpha Forest Constrain AGN Feedback Models?
• Pushing the Limits of Detectability: Mixed Dark Matter from Strong Gravitational Lenses
• Constraints on long-lived electrically charged massive particles from anomalous strong lens systems
• Constraining Mixed Dark Matter models with high redshift Lyman-alpha forest data
• Rapid onset of the 21-cm signal suggests a preferred mass range for dark matter particle
• Too hot to handle? Analytic solutions for massive neutrino or warm dark matter cosmologies
• Structure Formation with Two Periods of Inflation: Beyond PLaIn $\Lambda$CDM
• Improving IGM temperature constraints using wavelet analysis on high-redshift quasars
• Theoretical foundations of the reduced relativistic gas in the cosmological perturbed context
• Constraining Warm Dark Matter with high-$z$ supernova lensing
• Metastable Conformal Dark Matter
• The central dark matter fraction of massive early-type galaxies
• Dark ages, a window on the dark sector. Hunting for ultra-light axions
• Probing photophobic (rel)axion dark matter
• Effects of Galaxy Cluster Structure on Lensed Gravitational Waves
• Heavy concerns about the light axino explanation of the 3.5 keV X-ray line
• Towards a Bullet-proof test for indirect signals of dark matter
• Phenomenology of $keV$ sterile neutrino in minimal extended seesaw
• Small-scale clumping of dark matter and the mean free path of ionizing photons at $z=6$
• The Lyman-beta forest as a cosmic thermometer
• Universal subhalo accretion in cold and warm dark matter cosmologies
• Radiative Light Dark Matter
• Particle initialization effects on Lyman-$\alpha$ forest statistics in cosmological SPH simulations
• The feasibility of constraining DM interactions with high-redshift observations by JWST
• $G$ Objects and primordial black holes
• Synergy Between Hubble Tension Motivated Self-Interacting Neutrino and KeV-Sterile Neutrino Dark Matter
• Anticipating the XRISM search for the decay of resonantly produced sterile neutrino dark matter
• A Stochastic Theory of the Hierarchical Clustering II. Halo progenitor mass function and large-scale bias
• Anisotropic strong lensing as a probe of dark matter self-interactions
• Three- and two-point spatial correlations of IGM at $z\sim 2$: Cloud based analysis using simulations
• Freezing-in the Hierarchy Problem
• Science from an Ultra-Deep, High-Resolution Millimeter-Wave Survey
• Constraining Ultra-light Axions with Galaxy Cluster Number Counts
• Probing the nature of Dark Matter through the metal enrichment of the intergalactic medium
• Differentiating small-scale subhalo distributions in CDM and WDM models using persistent homology
• A general approach for testing non-cold dark matter at small cosmological scales
• Astrophysical Searches and Constraints on Ultralight Bosonic Dark Matter
• Self-Interacting Dark Matter in Cosmology: accurate numerical implementation and observational constraints
• Cosmic Reionization on Computers: Evolution of the Flux Power Spectrum
• Large-Scale Structure Topology in Non-Standard Cosmologies: Impact of Dark Sector Physics
• Ly$\alpha$NNA: A Deep Learning Field-level Inference Machine for the Lyman-$\alpha$ Forest
• Warm Hawking Relics From Primordial Black Hole Domination
• Off-shell Dark Matter: A Cosmological relic of Quantum Gravity
• Manifestations of dark matter and variations of fundamental constants in atoms and astrophysical phenomena
• Limit on the dark matter mass from its interaction with photons
• Probing the cosmic web in Ly$\alpha$ emission over large scales: an Intensity Mapping forecast for DECaLS/BASS and DESI
• Constraining Hot Dark Matter Sub-Species with Weak Lensing and the Cosmic Microwave Background Radiation
• CMB-HD: An Ultra-Deep, High-Resolution Millimeter-Wave Survey Over Half the Sky
• N-body simulations of structure formation in thermal inflation cosmologies
• AdS braneworld with Backreaction
• Analytic Fluid Approximation for Warm Dark Matter
• Hollow cores in Warm Dark Matter halos from the Vlasov-Poisson equation
• COZMIC. III. Cosmological Zoom-in Simulations of Self-interacting Dark Matter with Suppressed Initial Conditions
• Constraining cosmology with the velocity function of low-mass galaxies
• The influence of dark matter halo on the stellar stream asymmetry via dynamical friction
• Inverse Seesaw, dark matter and the Hubble tension
• Redshifted 21-cm emission signal from the halos in Dark Ages
• Particle dark matter density and entropy production in the early universe
• The Epoch of Reionization in Warm Dark Matter Scenarios
• A forward-modelling method to infer the dark matter particle mass from strong gravitational lenses
• Warm dark matter model with a few keV mass is bad for the too-big-to-fail problem
• Can decaying sterile neutrinos account for all dark matter?
• Mass accretion rates and multi-scale halo environment in cold and warm dark matter cosmologies
• Cored DARKexp systems with finite size: numerical results
• New emission line at ~3.5 keV - observational status, connection with radiatively decaying dark matter and directions for future studies
• Baryogenesis in a Parity Solution to the Strong CP Problem
• Fingerprint matching of beyond-WIMP dark matter: neural network approach
• Collider fingerprints of freeze-in dark matter produced during the fast expansion phase of Universe
• Measurement of redshift-space two- and three-point correlation of Ly$\alpha$ absorbers at $1.7<z<3.5$: Implications on evolution of the physical properties of IGM
• Dark Matter phenomenology : from simplified WIMP models to refined alternative solutions
• Signatures of Fuzzy Dark Matter Inside Radial Critical Curves
• Unified dark matter: constraints from galaxies and clusters
• Bound Dark Matter (BDM) towards solving the Small Scale Structure Problem
• Cosmological Signatures of Dark Sector Physics: The Evolution of Haloes and Spin Alignment
• Warm and Cold Dark Matter in Bouncing Universe
• Effect of Separate Initial Conditions on the Lyman-$\alpha$ Forest in Simulations
• Dark matter model favoured by reionization data: 7 keV sterile neutrino vs cold dark matter
• Harvesting the Lyα forest with convolutional neural networks
• Using dust to constrain dark matter models
• The Compressed 3D Lyman-Alpha Forest Bispectrum
• DESI forecast for Dark Matter-Neutrino interactions using EFTofLSS
• Impact of Dark Sector Preheating on CMB Observables
• Differentiating Warm Dark Matter Models through 21cm Line Intensity Mapping: A Convolutional Neural Network Approach
• Interacting light thermal-relic dark matter: self-consistent cosmological bounds
• Constraint on Matter Power Spectrum on $10^6-10^9{M}_{\odot }$ Scales from ${\tau }_e$
• Kinetic recoupling of dark matter
• Testing extensions to LCDM on small scales with forthcoming cosmic shear surveys
• Analytical warm dark matter power spectrum on small scales
• Observing the very low-surface brightness dwarfs in a deep field in the VIRGO cluster: constraints on Dark Matter scenarios
• The imprint of dark subhaloes on the circumgalactic medium
• Testable dark matter solution within the seesaw mechanism
• An improved model for the effect of correlated Si-III absorption on the one-dimensional Lyman-$\alpha$ forest power spectrum
• Lyman-alpha power spectrum as a probe of modified gravity
• Revisiting PBH accretion, evaporation and their cosmological consequences
• Halo concentration strengthens dark matter constraints in galaxy-galaxy strong lensing analyses
• The AIDA-TNG project: 3D halo shapes
• Ultra-light dark matter with non-canonical kinetics reopening the mass window
• Investigating sub-MeV dark matter annihilation to neutrinos using direct detection experiments
• What can we learn about Reionization astrophysical parameters using Gaussian Process Regression?
• Exploring Ultralight Scalar Assistance in Sterile Neutrino Dark Matter: Cold Spectrum and Unusual X/Gamma-ray Signatures
• Post-inflationary Leptogenesis and Dark Matter production: Metric versus Palatini formalism
• Quantum Statistical Effects on Warm Dark Matter and the Mass Constraint from the Cosmic Structure at Small Scales
• Testing the sterile neutrino dark matter paradigm with astrophysical observations
• The Lyman-alpha Forest as a tool for disentangling non-Gaussianities
• Degeneracy between warm and coupled cold dark matter: A clarifying note
• ForestFlow: predicting the Lyman-$\alpha$ forest clustering from linear to nonlinear scales
• The virial mode $k_v$ approach to Structure Formation with Warm Dark Matter
• Macromodel-free flux-ratio prediction in quadruply imaged quasars with local constraints from lensed arcs
• Weighing Cosmic Structures with Clusters of Galaxies and the Intergalactic Medium
• Impact of astrophysical effects on the dark matter mass constraint with 21cm intensity mapping
• WIMP decay as a possible Warm Dark Matter model
• Cored Dark Matter halos in the Cosmic Neutrino Background
• Cosmological constraints on mass-varying dark matter
• 21 cm Cosmology Sensitivity to Small-Scale Structure: Warm vs Neutrino-Interacting Dark Matter
• Modeling the Cosmological Lyman-$\alpha$ Forest at the Field Level
• Is it possible to unify three kinds of Dark Matters into a Kaluza-Klein Neutrino?
• Characterizing the Lyman-$\alpha$ flux probability distribution function using Legendre polynomials
• Theoretical and phenomenological consequences of active and sterile neutrino within Beyond Standard Model framework
• Comparison of simulations and semi-analytical model for WDM subhalo mass functions
• Extragalactic Searches for Dark Matter Annihilation
• Warm, not Fuzzy: Generalized Ultralight Dark Matter Limits from Milky Way Satellites
• Generation of Lognormal Synthetic Lyman-$\alpha$ Forest Spectra for $P_{1D}$ Analysis
• Probing power spectrum enhancement at small scales with the SKA
• Dwarf stellar haloes: a powerful probe of small-scale galaxy formation and the nature of dark matter
• Structure Formation under Inelastic Two-Component Dark Matter: Halo Statistics and Matter Power Spectra in the High-$z$ Universe
• Oscillation Baryogenesis via Ultraviolet Dark Matter Freeze-In
• Matter-antimatter asymmetry in a rotating universe: Dirac spinors in axisymmetric Bianchi IX cosmology
• Milky Way Satellite Census. IV. Constraints on Decaying Dark Matter from Observations of Milky Way Satellite Galaxies
• Simulating the complexity of the dark matter sheet II: halo and subhalo mass functions for non-cold dark matter models
• Catalyzed Baryogenesis
• DESI DR1 Lyα 1D power spectrum: The Fast Fourier Transform estimator measurement
• Kolmogorov complexity in the Milky Way and its reduction with warm dark matter
• Glueball dark matter in non-standard cosmologies
• Cosmological constraints on sterile neutrino Dark Matter production mechanisms
• Bridging Simulations and EFT: A Hybrid Model of the Lyman-Alpha Forest Field
• LSST Strong Lensing Systems Dark Matter Sensitivity Analysis with Neural Ratio Estimators
• Dark matter with excitable levels
• Probing the warm dark matter mass with [C II] intensity mapping