The 21 cm signal and the interplay between dark matter annihilations and astrophysical processes

Abstract

Future dedicated radio interferometers, including HERA and SKA, are very promising tools that aim to study the epoch of reionization and beyond via measurements of the 21 cm signal from neutral hydrogen. Dark matter (DM) annihilations into charged particles change the thermal history of the Universe and, as a consequence, affect the 21 cm signal. Accurately predicting the effect of DM strongly relies on the modeling of annihilations inside halos. In this work, we use up-to-date computations of the energy deposition rates by the products from DM annihilations, a proper treatment of the contribution from DM annihilations in halos, as well as values of the annihilation cross section allowed by the most recent cosmological measurements from the Planck satellite. Given current uncertainties on the description of the astrophysical processes driving the epochs of reionization, X-ray heating and Lyman-$\alpha$ pumping, we find that disentangling DM signatures from purely astrophysical effects, related to early-time star formation processes or late-time galaxy X-ray emissions, will be a challenging task. We conclude that only annihilations of DM particles with masses of $\sim 100$ MeV, could leave an unambiguous imprint on the 21 cm signal and, in particular, on the 21 cm power spectrum. This is in contrast to previous, more optimistic results in the literature, which have claimed that strong signatures might also be present even for much higher DM masses. Additional measurements of the 21 cm signal at different cosmic epochs will be crucial in order to break the strong parameter degeneracies between DM annihilations and astrophysical effects and undoubtedly single out a DM imprint for masses different from $\sim 100$ MeV.

arXiv comment25 pages, 10 figures

References in corpus (173)

• A Universal Density Profile from Hierarchical Clustering
• The Structure of Cold Dark Matter Halos
• Simulating the joint evolution of quasars, galaxies and their large-scale distribution
• Large scale bias and the peak background split
• LOFAR: The LOw-Frequency ARray
• Profiles of dark haloes: evolution, scatter, and environment
• The Aquarius Project: the subhalos of galactic halos
• Ellipsoidal collapse and an improved model for the number and spatial distribution of dark matter haloes
• Cosmology at Low Frequencies: The 21 cm Transition and the High-Redshift Universe
• In the Beginning: The First Sources of Light and the Reionization of the Universe
• The Murchison Widefield Array: the Square Kilometre Array Precursor at low radio frequencies
• Chandra Cluster Cosmology Project III: Cosmological Parameter Constraints
• 21-cm cosmology
• Power Spectra for Cold Dark Matter and its Variants
• Clumps and streams in the local dark matter distribution
• How small were the first cosmological objects?
• 21-cm Tomography of the Intergalactic Medium at High Redshift
• 21cmFAST: A Fast, Semi-Numerical Simulation of the High-Redshift 21-cm Signal
• Halo concentrations in the standard LCDM cosmology
• Formation and evolution of galaxy dark matter halos and their substructure
• A New Calculation of the Recombination Epoch
• Density profiles and substructure of dark matter halos: converging results at ultra-high numerical resolution
• Indirect Dark Matter Signatures in the Cosmic Dark Ages I. Generalizing the Bound on s-wave Dark Matter Annihilation from Planck
• CMB Constraints on WIMP Annihilation: Energy Absorption During the Recombination Epoch
• Reionization and Cosmology with 21 cm Fluctuations
• Cosmological Parameter Estimation Using 21 cm Radiation from the Epoch of Reionization
• Cosmological Constraints from the SDSS maxBCG Cluster Catalog
• Dark matter substructure and gamma-ray annihilation in the Milky Way halo
• The Precision Array for Probing the Epoch of Reionization: 8 Station Results
• Earth-mass dark-matter haloes as the first structures in the early Universe
• Particle decays during the cosmic dark ages
• The Radiative Feedback of the First Cosmological Objects
• The halo mass function from the dark ages through the present day
• Simulating Cosmic Reionization at Large Scales I: the Geometry of Reionization
• Baryon Acoustic Oscillation Intensity Mapping as a Test of Dark Energy
• Measuring the Small-Scale Power Spectrum of Cosmic Density Fluctuations Through 21 cm Tomography Prior to the Epoch of Structure Formation
• What Next-Generation 21 cm Power Spectrum Measurements Can Teach Us About the Epoch of Reionization
• Detecting Dark Matter Annihilation with CMB Polarization : Signatures and Experimental Prospects
• Reionization and the Cosmic Dawn with the Square Kilometre Array
• Late-time cosmology with 21cm intensity mapping experiments
• CMB constraints on Dark Matter models with large annihilation cross-section
• A simulation calibrated limit on the HI power spectrum from the GMRT Epoch of Reionization experiment
• Cosmological dark matter annihilations into gamma-rays - a closer look
• The first WIMPy halos
• Unusually Large Fluctuations in the Statistics of Galaxy Formation at High Redshift
• The Global 21 Centimeter Background from High Redshifts
• The halo mass function through the cosmic ages
• Damping scales of neutralino cold dark matter
• How accurately can 21 cm tomography constrain cosmology?
• Detecting the Earliest Galaxies Through Two New Sources of 21cm Fluctuations
• 21 cm fluctuations from inhomogeneous X-ray heating before reionization
• Wouthuysen-Field coupling strength and application to high-redshift 21 cm radiation
• PAPER-64 Constraints on Reionization: The 21cm Power Spectrum at z=8.4
• The Spin-Kinetic Temperature Coupling and the Heating Rate due to Lyman Alpha Scattering before Reionization: Predictions for 21cm Emission and Absorption
• Particle Models and the Small-Scale Structure of Dark Matter
• A Method for Separating the Physics from the Astrophysics of High-Redshift 21cm Fluctuations
• 21CMMC: an MCMC analysis tool enabling astrophysical parameter studies of the cosmic 21 cm signal
• The Small-Scale Power Spectrum of Cold Dark Matter
• Radio Signatures of HI at High Redshift: Mapping the End of the ``Dark Ages''
• Probing Beyond the Epoch of Hydrogen Reionization with 21 Centimeter Radiation
• Indirect Dark Matter Signatures in the Cosmic Dark Ages II. Ionization, Heating and Photon Production from Arbitrary Energy Injections
• The Halo Mass Function: High-Redshift Evolution and Universality
• What mass are the smallest protohalos?
• The flattening of the concentration-mass relation towards low halo masses and its implications for the annihilation signal boost
• Effects of cold dark matter decoupling and pair annihilation on cosmological perturbations
• Signatures of X-rays in the early Universe
• A lower limit of dz > 0.06 for the duration of the reionization epoch
• Small-scale clumps in the galactic halo and dark matter annihilation
• Constraining Dark Matter candidates from structure formation
• A Sensitivity and Array-Configuration Study for Measuring the Power Spectrum of 21cm Emission from Reionization
• Searching for Dark Matter in the CMB: A Compact Parameterization of Energy Injection from New Physics
• Current Dark Matter Annihilation Constraints from CMB and Low-Redshift Data
• Precise constraints on the dark matter content of Milky Way dwarf galaxies for gamma-ray experiments
• Overcoming real-world obstacles in 21 cm power spectrum estimation: A method demonstration and results from early Murchison Widefield Array data
• The GMRT-EoR Experiment: A new upper limit on the neutral hydrogen power spectrum at z~8.6
• Possibility of Precise Measurement of the Cosmological Power Spectrum With a Dedicated 21cm Survey After Reionization
• Updated CMB constraints on Dark Matter annihilation cross-sections
• Opening the 21cm EoR Window: Measurements of Foreground Isolation with PAPER
• Dark matter subhalos and the dwarf satellites of the Milky Way
• Impact of dark matter decays and annihilations on reionization
• Heating and Ionization of the Intergalactic Medium by an Early X-Ray Background
• Inhomogeneous Reionization Regulated by Radiative and Stellar Feedbacks
• Constraints on Dark Matter interactions from structure formation: Damping lengths
• The Dark Matter Annihilation Signal from Galactic Substructure: Predictions for GLAST
• Testing General Relativity with 21 cm intensity mapping
• The Baryon Acoustic Oscillation Broadband and Broad-beam Array: Design Overview and Sensitivity Forecasts
• On the Direct Detectability of the Cosmic Dark Ages: 21-cm Emission from Minihalos
• Baryonic Acoustic Oscillations in 21cm Emission: A Probe of Dark Energy out to High Redshifts
• Contraints on radiative dark-matter decay from the cosmic microwave background
• Energy Injection And Absorption In The Cosmic Dark Ages
• The X-ray spectra of the first galaxies: 21cm signatures
• Probing the First Stars and Black Holes in the Early Universe with the Dark Ages Radio Explorer (DARE)
• Observing Neutral Hydrogen Above Redshift 6: The "Global" Perspective
• Constraints on Dark Matter annihilations from reionization and heating of the intergalactic gas
• Amplification of Cosmological Inhomogeneities by the QCD Transition
• The Effects of Dark Matter Decay and Annihilation on the High-Redshift 21 cm Background
• Hierarchical Formation of Dark Matter Halos and the Free Streaming Scale
• Eliminating the optical depth nuisance from the CMB with 21 cm cosmology
• Indirect Dark Matter Detection from Dwarf Satellites: Joint Expectations from Astrophysics and Supersymmetry
• Do We Need Stars to Reionize the Universe at High Redshifts? Early Reionization by Decaying Heavy Sterile Neutrinos
• Systematic Uncertainties In Constraining Dark Matter Annihilation From The Cosmic Microwave Background
• The structure and evolution of cold dark matter halos
• The Imprint of Warm Dark Matter on the Cosmological 21-cm Signal
• Could the Cosmological Recombination Spectrum Help Us Understand Annihilating Dark Matter?
• The impacts of dark matter particle annihilation on recombination and the anisotropies of the cosmic microwave background
• 21-cm Background Anisotropies Can Discern Primordial Non-Gaussianity
• The bispectrum of redshifted 21-cm fluctuations from the dark ages
• Density Profiles of CDM Microhalos and their Implications for Annihilation Boost Factors
• Kinetic decoupling of neutralino dark matter
• Constraints on dark matter annihilation from CMB observations before Planck
• Reionization by UV or X-ray sources
• Cosmic Calibration
• Constraining dark matter late-time energy injection: decays and p-wave annihilations
• Reionization and Beyond: detecting the peaks of the cosmological 21cm signal
• Constraints on leptonically annihilating Dark Matter from reionization and extragalactic gamma background
• Multi-redshift limits on the 21cm power spectrum from PAPER
• Constraining DM through 21 cm observations
• Decaying particles and the reionization history of the Universe
• Effects of Dark Matter Annihilation on the Cosmic Microwave Background
• Unveiling the nature of dark matter with high redshift 21 cm line experiments
• Modeling the neutral hydrogen distribution in the post-reionization Universe: intensity mapping
• Thermal decoupling and the smallest subhalo mass in dark matter models with Sommerfeld-enhanced annihilation rates
• Cosmological constraints on dark matter models with velocity-dependent annihilation cross section
• The 21cm Signature of the First Stars
• Probing the Epoch of Early Baryonic Infall Through 21cm Fluctuations
• The nature of dark matter from the global high redshift HI 21 cm signal
• Galaxy Groups in the 2dFGRS: the number density of groups
• Weighing neutrinos with cosmic neutral hydrogen
• Interpreting the Global 21-cm Signal from High Redshifts. II. Parameter Estimation for Models of Galaxy Formation
• How Dark Matter Reionized The Universe
• CMB photons shedding light on dark matter
• The effect of quark interactions on dark matter kinetic decoupling and the mass of the smallest dark halos
• Constraining cosmology and ionization history with combined 21 cm power spectrum and global signal measurements
• Constraining massive neutrinos using cosmological 21 cm observations
• Boosting the annihilation boost: Tidal effects on dark matter subhalos and consistent luminosity modeling
• Dark matter annihilation and its effect on CMB and Hydrogen 21 cm observations
• Constraining High Redshift X-ray Sources with Next Generation 21 cm Power Spectrum Measurements
• Warm dark matter signatures on the 21cm power spectrum: Intensity mapping forecasts for SKA
• Constraints on Fundamental Cosmological Parameters with Upcoming Redshifted 21 cm Observations
• Probing small-scale cosmological fluctuations with the 21 cm forest: effects of neutrino mass, running spectral index and warm dark matter
• Cosmological constraints from 21cm surveys after reionization
• Heating of the Intergalactic Medium by Primordial Miniquasars
• Adding Context to JWST Surveys with Current and Future 21cm Radio Observations
• Leptonic dark matter annihilation in the evolving universe: constraints and implications
• The effect of primordial black holes on 21 cm fluctuations
• The effect of early dark matter halos on reionization
• The Difference PDF of 21-cm Fluctuations: A Powerful Statistical Tool for Probing Cosmic Reionization
• Kinetic Decoupling and Small-Scale Structure in Effective Theories of Dark Matter
• Impact of Dark Matter Annihilation on the High-Redshift Intergalactic Medium
• Primordial non-Gaussianity from the 21 cm Power Spectrum during the Epoch of Reionization
• Cosmological and Astrophysical Parameter Measurements with 21-cm Anisotropies During the Era of Reionization
• Constraints on the neutrino parameters by future cosmological 21cm line and precise CMB polarization observations
• Background reionization history from omniscopes
• CMB Constraint on Dark Matter Annihilation after Planck 2015
• Determination of neutrino mass hierarchy by 21 cm line and CMB B-mode polarization observations
• Signatures of clumpy dark matter in the global 21 cm background signal
• Measuring the X-ray Background in the Reionization Era with First Generation 21 cm Experiments
• Constraining warm dark matter with 21 cm line fluctuations due to minihalos
• Particle energy cascade in the Intergalactic Medium
• WMAP5 and the Cluster Mass Function
• Particle decay in the early universe: predictions for 21 cm
• Cosmological signatures of tilted isocurvature perturbations: reionization and 21cm fluctuations
• Earthly probes of the smallest dark matter halos
• Universal clustering of dark matter in phase space
• The 21cm radiation from minihalos as a probe of small primordial non-Gaussianity
• Signatures of Modified Gravity on the 21-cm Power Spectrum at Reionisation
• Dark matter protohalos in MSSM-9 and implications for direct and indirect detection
• Constraining isocurvature perturbations with the 21cm emission from minihaloes
• Current constraints on early and stressed dark energy models and future 21 cm perspectives
• Future sensitivity of neutrino telescopes to dark matter annihilations from the cosmic diffuse neutrino signal
• Constraining primordial non-Gaussianity with CMB-21cm cross-correlations?
• The 21cm Power Spectrum and the Shapes of Non-Gaussianity
• White Noise from Dark Matter: 21 cm Observations of Early Baryon Collapse

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• High Mass X-ray Binaries and the Cosmic 21-cm Signal: Impact of Host Galaxy Absorption
• A tale of two sites -- I: Inferring the properties of minihalo-hosted galaxies from current observations
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• DarkHistory: A code package for calculating modified cosmic ionization and thermal histories with dark matter and other exotic energy injections
• Status, Challenges and Directions in Indirect Dark Matter Searches
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• Homeopathic Dark Matter, or how diluted heavy substances produce high energy cosmic rays
• Unique Signatures of Population III Stars in the Global 21-cm Signal
• The impact of EDGES 21-cm data on dark matter interactions
• A fresh look into the interacting dark matter scenario
• Lyman-$\alpha$ Constraints on Cosmic Heating from Dark Matter Annihilation and Decay
• An Effective Model for the Cosmic-Dawn 21-cm Signal
• A halo model approach for the 21-cm power spectrum at cosmic dawn
• A tale of two sites -- II: Inferring the properties of minihalo-hosted galaxies with upcoming 21-cm interferometers
• Probing relic neutrino decays with 21 cm cosmology
• Warm dark matter and the ionization history of the Universe
• Robust cosmic-ray constraints on $p$-wave annihilating MeV dark matter
• Dark Matter microphysics and 21 cm observations
• Les Houches Lectures on Indirect Detection of Dark Matter
• Hints of dark photon dark matter from observations and hydrodynamical simulations of the low-redshift Lyman-$\alpha$ forest
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• ETHOS -- An Effective Theory of Structure Formation: Impact of Dark Acoustic Oscillations on Cosmic Dawn
• Prospects of Future CMB Anisotropy Probes for Primordial Black Holes
• Systematic uncertainties in models of the cosmic dawn
• EDGES result versus CMB and low-redshift constraints on ionization histories
• Variations in fundamental constants at the cosmic dawn
• Enlightening the dark ages with dark matter
• Was there an early reionization component in our universe?
• The EDGES measurement disfavors an excess radio background during the cosmic dawn
• Probing Dark Relativistic Species and Their Interactions with Dark Matter through CMB and 21cm surveys
• Modified dispersion relations and a potential explanation of the EDGES anomaly
• Lux ex tenebris: The imprint of annihilating dark matter on the intergalactic medium during Cosmic Dawn
• 21-cm Constraints on Dark Matter Annihilation after an Early Matter-Dominated Era
• Statistical estimation of full-sky radio maps from 21cm array visibility data using Gaussian constrained realizations
• Probing self-interacting ultrahigh-energy neutrinos with the cosmic 21-cm signal
• Astrophysical uncertainties challenge 21-cm forecasts: A primordial black hole case study
• The Effects of Dark Matter Annihilation and Dark Matter-Baryon Velocity Offsets at Cosmic Dawn
• Dark matter search with CMB: a study of foregrounds
• Signatures of inhomogeneous dark matter annihilation on 21-cm
• 21 cm Cosmology Sensitivity to Small-Scale Structure: Warm vs Neutrino-Interacting Dark Matter
• Configuration Requirements for 21-cm Forest Background Quasar Searches with the Moon-based Interferometer