Bounds on Dark Matter decay from 21 cm line

Abstract

The observation of the cosmic 21-cm spectrum can serve as a probe for Dark Matter properties. We point out that the knowledge of the signal amplitude at a given redshift allows one to put conservative bounds on the DM decay rate which are independent of astrophysical parameters. These limits are valid for the vast majority of DM models, those without extra IGM cooling or additional background radiation. Using the experimental results reported by the EDGES collaboration, we derive bounds that are stronger than the ones derived from other CMB observations and competitive with the ones from indirect detection.

9 pages, 2 figures. v3: Improved discussion of the assumptions, matching to the published version. Bounds for different decay channels included. References added

References in corpus (18)

• Planck 2015 results. XIII. Cosmological parameters
• An absorption profile centred at 78 megahertz in the sky-averaged spectrum
• 21-cm Tomography of the Intergalactic Medium at High Redshift
• Possible interaction between baryons and dark-matter particles revealed by the first stars
• Reionization of the Inhomogeneous Universe
• Indirect Dark Matter Signatures in the Cosmic Dark Ages I. Generalizing the Bound on s-wave Dark Matter Annihilation from Planck
• Particle decays during the cosmic dark ages
• CMB constraints on Dark Matter models with large annihilation cross-section
• Constraining Light Dark Matter with Diffuse X-Ray and Gamma-Ray Observations
• General Constraints on Dark Matter Decay from the Cosmic Microwave Background
• Indirect Dark Matter Signatures in the Cosmic Dark Ages II. Ionization, Heating and Photon Production from Arbitrary Energy Injections
• The Darkest Hour Before Dawn: Contributions to Cosmic Reionization from Dark Matter Annihilation and Decay
• Energy Injection And Absorption In The Cosmic Dark Ages
• Heating of Baryons due to Scattering with Dark Matter During the Dark Ages
• New Limits on the Dark Matter Lifetime from Dwarf Spheroidal Galaxies using Fermi-LAT
• Unveiling the nature of dark matter with high redshift 21 cm line experiments
• The nature of dark matter from the global high redshift HI 21 cm signal
• The 21 cm signal and the interplay between dark matter annihilations and astrophysical processes

Cited by in corpus (56)

• Data Analysis for Precision 21 cm Cosmology
• Neutrino Mass Ordering from Oscillations and Beyond: 2018 Status and Future Prospects
• Reviving Millicharged Dark Matter for 21-cm Cosmology
• Too Hot, Too Cold or Just Right? Implications of a 21-cm Signal for Dark Matter Annihilation and Decay
• The redshifted 21-cm signal in the EDGES low-band spectrum
• 21-cm Fluctuations from Charged Dark Matter
• Exoplanets as Sub-GeV Dark Matter Detectors
• Discovery of Magnetic Fields Along Stacked Cosmic Filaments as Revealed by Radio and X-Ray Emission
• Constraining the primordial black hole abundance with 21cm cosmology
• Homeopathic Dark Matter, or how diluted heavy substances produce high energy cosmic rays
• Spectral distortion constraints on photon injection from low-mass decaying particles
• Dawn of the dark: unified dark sectors and the EDGES Cosmic Dawn 21-cm signal
• Lyman-$\alpha$ Constraints on Cosmic Heating from Dark Matter Annihilation and Decay
• Gluequark Dark Matter
• Dark Matter microphysics and 21 cm observations
• Cosmological Abundance of Colored Relics
• Insight into primordial magnetic fields from 21-cm line observation with EDGES experiment
• Impact of Ly$\alpha$ heating on the global 21-cm signal from the Cosmic Dawn
• Bounds on Ultra-Light Hidden-Photon Dark Matter from 21cm at Cosmic Dawn
• Hints of dark photon dark matter from observations and hydrodynamical simulations of the low-redshift Lyman-$\alpha$ forest
• Kinetic Mixing, Dark Photons and an Extra Dimension: I
• Kinetic Mixing, Dark Photons and Extra Dimensions II: Fermionic Dark Matter
• Probing Interacting Dark Energy and Scattering of Baryons with Dark Matter in Light of EDGES 21cm Signal
• 21-cm observations and warm dark matter models
• 21cm signal sensitivity to dark matter decay
• BEoRN: A fast and flexible framework to simulate the epoch of reionisation and cosmic dawn
• Constraining spinning primordial black holes with global 21-cm signal
• Constraints on ALPs and excited dark matter from the EDGES 21-cm absorption signal
• Baryon-Dark matter interaction in presence of magnetic fields in light of EDGES signal
• Impact of EDGES 21cm Global Signal on Primordial Power Spectrum
• 21-cm line Anomaly: A brief Status
• Search for Semi-Annihilating Dark Matter with Fermi-LAT, H.E.S.S., Planck, and the Cherenkov Telescope Array
• Exploring multimessenger signals from heavy dark matter decay with EDGES 21-cm result and IceCube
• Impacts of new small-scale N-body simulations on dark matter annihilations constrained from cosmological 21cm line observations
• Probing the primordial Universe with 21-cm line from cosmic dawn/epoch of reionization
• Constraining structure formation using EDGES
• Global 21-cm brightness temperature in viscous dark energy models
• Cosmological Constraints on Unstable Particles: Numerical Bounds and Analytic Approximations
• CMB and 21cm bounds on early structure formation boosted by primordial black hole entropy fluctuations
• Bounds on sterile neutrino lifetime and mixing angle with active neutrinos by global 21 cm signal
• Constraining PBH mass distributions from 21cm brightness temperature results and an analytical mapping between probability distribution of 21cm signal and PBH masses
• Primordial Magnetic Fields in Light of Dark Ages Global 21-cm Signal
• Kinetic Mixing, Dark Photons and Extra Dimensions III: Brane Localized Dark Matter
• Can EDGES observation favour any dark matter model?
• Constraints on freeze-in dark matter from Lyman-$\alpha$ forest and 21-cm signal : single-field models
• 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
• Probing self-interacting ultrahigh-energy neutrinos with the cosmic 21-cm signal
• Lyman-$\alpha$ limit on axion-like cold dark matter
• Multi-Component Dark Matter from Minimal Flavor Violation
• Catching p via s wave with indirect detection
• In Search of Global 21-cm Signal using Artificial Neural Network in light of ARCADE 2
• 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
• Axion-Photon Conversion In Magnetized Universe: Impact On The Global 21-cm Signal
• Cosmological bounds on dark matter annihilation using dark ages 21-cm signal
• Dark Matter Energy Deposition and Production from the Table-Top to the Cosmos