Unveiling the nature of dark matter with high redshift 21 cm line experiments

Abstract

Observations of the redshifted 21 cm line from neutral hydrogen will open a new window on the early Universe. By influencing the thermal and ionization history of the intergalactic medium (IGM), annihilating dark matter (DM) can leave a detectable imprint in the 21 cm signal. Building on the publicly available 21cmFAST code, we compute the 21 cm signal for a 10 GeV WIMP DM candidate. The most pronounced role of DM annihilations is in heating the IGM earlier and more uniformly than astrophysical sources of X-rays. This leaves several unambiguous, qualitative signatures in the redshift evolution of the large-scale ($k\approx 0.1$ Mpc${}^{-1}$) 21 cm power amplitude: (i) the local maximum (peak) associated with IGM heating can be lower than the other maxima; (ii) the heating peak can occur while the IGM is in emission against the cosmic microwave background (CMB); (iii) there can be a dramatic drop in power (a global minimum) corresponding to the epoch when the IGM temperature is comparable to the CMB temperature. These signatures are robust to astrophysical uncertainties, and will be easily detectable with second generation interferometers. We also briefly show that decaying warm dark matter has a negligible role in heating the IGM.

arXiv comment17 pages, 5 figures. Published in JCAP

References in corpus (55)

• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• The Structure of Cold Dark Matter Halos
• Planck 2013 results. XVI. Cosmological parameters
• Observation of an anomalous positron abundance in the cosmic radiation
• First results from the LUX dark matter experiment at the Sanford Underground Research Facility
• Cosmology at Low Frequencies: The 21 cm Transition and the High-Redshift Universe
• Sterile Neutrinos as Dark Matter
• Dark Matter Results from 225 Live Days of XENON100 Data
• The Murchison Widefield Array: the Square Kilometre Array Precursor at low radio frequencies
• Measurement of the Cosmic Ray e+ plus e- spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope
• Warm Dark Matter as a solution to the small scale crisis: new constraints from high redshift Lyman-alpha forest data
• Results from a Search for Light-Mass Dark Matter with a P-type Point Contact Germanium Detector
• 21cmFAST: A Fast, Semi-Numerical Simulation of the High-Redshift 21-cm Signal
• Results from 730 kg days of the CRESST-II Dark Matter Search
• X-ray emission from star-forming galaxies - I. High-mass X-ray binaries
• Sterile Neutrino Hot, Warm, and Cold Dark Matter
• CMB Constraints on WIMP Annihilation: Energy Absorption During the Recombination Epoch
• Efficient Simulations of Early Structure Formation and Reionization
• Particle decays during the cosmic dark ages
• What Next-Generation 21 cm Power Spectrum Measurements Can Teach Us About the Epoch of Reionization
• Reionization and the Cosmic Dawn with the Square Kilometre Array
• Fermi LAT Search for Internal Bremsstrahlung Signatures from Dark Matter Annihilation
• Search for Supersymmetry at the LHC in Events with Jets and Missing Transverse Energy
• Detecting the Earliest Galaxies Through Two New Sources of 21cm Fluctuations
• New Limits on 21cm EoR From PAPER-32 Consistent with an X-Ray Heated IGM at z=7.7
• Isospin-Violating Dark Matter
• Wouthuysen-Field coupling strength and application to high-redshift 21 cm radiation
• Particle Models and the Small-Scale Structure of Dark Matter
• Search for Gamma-ray Spectral Lines with the Fermi Large Area Telescope and Dark Matter Implications
• Gamma Ray Signals from Dark Matter: Concepts, Status and Prospects
• X-ray emission from star-forming galaxies - II. Hot interstellar medium
• Signatures of X-rays in the early Universe
• Comparison Of Reionization Models: Radiative Transfer Simulations And Approximate, Semi-Numeric Models
• Current Dark Matter Annihilation Constraints from CMB and Low-Redshift Data
• Opening the 21cm EoR Window: Measurements of Foreground Isolation with PAPER
• Foreground Removal using FastICA: A Showcase of LOFAR-EoR
• Search for supersymmetry using final states with one lepton, jets, and missing transverse momentum with the ATLAS detector in sqrt{s} = 7 TeV pp
• Constraints on Warm Dark Matter from Cosmological Reionization
• Dark Matter and Pulsar Origins of the Rising Cosmic Ray Positron Fraction in Light of New Data From AMS
• The X-ray spectra of the first galaxies: 21cm signatures
• Constraints on Dark Matter annihilations from reionization and heating of the intergalactic gas
• Descending from on high: Lyman series cascades and spin-kinetic temperature coupling in the 21 cm line
• Secondary ionization and heating by fast electrons
• The Imprint of Warm Dark Matter on the Cosmological 21-cm Signal
• XENON10/100 dark matter constraints in comparison with CoGeNT and DAMA: examining the Leff dependence
• Reionization and Beyond: detecting the peaks of the cosmological 21cm signal
• The nature of dark matter from the global high redshift HI 21 cm signal
• Focusing on Warm Dark Matter with Lensed High-redshift Galaxies
• Constraints on Warm Dark Matter models from high-redshift long gamma-ray bursts
• PAMELA and AMS-02 positron and electron spectra are reproduced by three-dimensional cosmic-ray modeling
• Implications of the Cosmic Ray Electron Spectrum and Anisotropy measured with Fermi-LAT
• The Energy Cascade from Warm Dark Matter Decays
• The effect of Warm Dark Matter on galaxy properties: constraints from the stellar mass function and the Tully-Fisher relation
• Turbulence in the Intergalactic Medium
• Can Chandra resolve the remaining cosmic X-ray background?

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• HERA Phase I Limits on the Cosmic 21-cm Signal: Constraints on Astrophysics and Cosmology During the Epoch of Reionization
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• The Evolution of 21-cm Structure (EOS): public, large-scale simulations of Cosmic Dawn and Reionization
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• DarkHistory: A code package for calculating modified cosmic ionization and thermal histories with dark matter and other exotic energy injections
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• Transformative Science from the Lunar Farside: Observations of the Dark Ages and Exoplanetary Systems at Low Radio Frequencies
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• Dark-ages Reionization & Galaxy Formation Simulation I: The dynamical lives of high redshift galaxies
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• A tale of two sites -- II: Inferring the properties of minihalo-hosted galaxies with upcoming 21-cm interferometers
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• Strategies to Detect Dark-Matter Decays with Line-Intensity Mapping
• Dark Matter microphysics and 21 cm observations
• Les Houches Lectures on Indirect Detection of Dark Matter
• Rich structure of non-thermal relativistic CMB spectral distortions from high energy particle cascades at redshifts $z\lesssim 2\times 10^5$
• Hints of dark photon dark matter from observations and hydrodynamical simulations of the low-redshift Lyman-$\alpha$ forest
• CMB and Lyman-$\alpha$ constraints on dark matter decays to photons
• 21cm signal sensitivity to dark matter decay
• Inferring Astrophysics and Dark Matter Properties from 21cm Tomography using Deep Learning
• Metal Enrichment in the Reionization Epoch
• Enlightening the dark ages with dark matter
• Impacts of new small-scale N-body simulations on dark matter annihilations constrained from cosmological 21cm line observations
• Optimal, fast, and robust inference of reionization-era cosmology with the 21cmPIE-INN
• Constraint on dark matter central density in the Eddington inspired Born-Infeld (EiBI) gravity with input from Weyl gravity
• The EDGES measurement disfavors an excess radio background during the cosmic dawn
• SKATR: A Self-Supervised Summary Transformer for SKA
• Lux ex tenebris: The imprint of annihilating dark matter on the intergalactic medium during Cosmic Dawn
• The impact of non-Planckian effects on cosmological radio backgrounds
• Growth problems of stellar black holes in early galaxies
• Statistical estimation of full-sky radio maps from 21cm array visibility data using Gaussian constrained realizations
• 21-cm Constraints on Dark Matter Annihilation after an Early Matter-Dominated Era
• Cosmological boost factor for dark matter annihilation at redshifts of $z=10$-$100$ using the power spectrum approach
• Global signal in the redshifted hydrogen 21-cm line from the Dark Ages and Cosmic Dawn: Dependence on the nature of dark matter and modeling of first light
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• Probing self-interacting ultrahigh-energy neutrinos with the cosmic 21-cm signal
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• Probing Non-Minimal Dark Sectors via the 21 cm Line at Cosmic Dawn
• 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
• Bounds on Dark Matter Annihilation Cross-sections from Inert Doublet Model in the context of 21 cm Cosmology of Dark Ages
• Exploring delaying and heating effects on the 21-cm signature of fuzzy dark matter
• Impact of Sommerfeld enhancement on helium reionization via WIMP dark matter