The Effects of Dark Matter-Baryon Scattering on Redshifted 21 cm Signals

Abstract

We demonstrate that elastic scattering between dark matter (DM) and baryons can affect the thermal evolution of the intergalactic medium at early epochs and discuss the observational consequences. We show that, due to the interaction between DM and baryons, the baryon temperature is cooled after decoupling from the CMB temperature. We illustrate our findings by calculating the 21 cm power spectrum in coexistence with a velocity-dependent DM elastic scattering cross section. For instance, for a DM mass of 10 GeV, the 21 cm brightness temperature angular power spectrum can be suppressed by a factor 2 within the currently allowed DM-baryon cross section bounded by the CMB and large-scale structure data. This scale-independent suppression of the angular power spectrum can be even larger for a smaller DM mass with a common cross section (for instance, as large as a factor 10 for $m_d\sim 1$ GeV), and such an effect would be of great interest for probing the nature of DM in view of forthcoming cosmological surveys.

arXiv comment15 pages, 7 figures

References in corpus (39)

• LOFAR: The LOw-Frequency ARray
• Observational evidence for self-interacting cold dark matter
• Cosmological Perturbation Theory in the Synchronous and Conformal Newtonian Gauges
• Cosmological Perturbation Theory in the Synchronous vs. Conformal Newtonian Gauge
• Cosmology at Low Frequencies: The 21 cm Transition and the High-Redshift Universe
• 21-cm cosmology
• 21-cm Tomography of the Intergalactic Medium at High Redshift
• A New Calculation of the Recombination Epoch
• Beyond Collisionless Dark Matter: Particle Physics Dynamics for Dark Matter Halo Structure
• Updated Bounds on Milli-Charged Particles
• The Murchison Widefield Array: Design Overview
• The evolution of CMB spectral distortions in the early Universe
• The Stueckelberg $Z^{\prime }$ Extension with Kinetic Mixing and Milli-Charged Dark Matter From the Hidden Sector
• A simulation calibrated limit on the HI power spectrum from the GMRT Epoch of Reionization experiment
• Constraining Dark Matter-Baryon Scattering with Linear Cosmology
• Dark-Matter Electric and Magnetic Dipole Moments
• Probing the inflaton: Small-scale power spectrum constraints from measurements of the CMB energy spectrum
• New Limits on 21cm EoR From PAPER-32 Consistent with an X-Ray Heated IGM at z=7.7
• Probing Beyond the Epoch of Hydrogen Reionization with 21 Centimeter Radiation
• Turning off the Lights: How Dark is Dark Matter?
• The 21cm angular-power spectrum from the dark ages
• The Effects of Dark Matter Decay and Annihilation on the High-Redshift 21 cm Background
• Dipolar Dark Matter
• Cosmic microwave background and large scale structure limits on the interaction between dark matter and baryons
• Signals From the Epoch of Cosmological Recombination
• New bounds on millicharged particles from cosmology
• Direct detection of Light Anapole and Magnetic Dipole DM
• Unavoidable CMB spectral features and blackbody photosphere of our Universe
• Does Bose-Einstein condensation of CMB photons cancel μ distortions created by dissipation of sound waves in the early Universe?
• Cosmological constraints from CMB distortion
• Probing Primordial Magnetic Fields with the 21cm Fluctuations
• Matter temperature after cosmological recombination
• The effect of primordial black holes on 21 cm fluctuations
• Spin Exchange Rates in Proton-Hydrogen Collisions
• Impact of Dark Matter Annihilation on the High-Redshift Intergalactic Medium
• Constraint on Light Dipole Dark Matter from Helioseismology
• Constraints on Light Magnetic Dipole Dark Matter from the ILC and SN 1987A
• Primordial black holes in the Dark Ages: Observational prospects for future 21cm surveys
• 21cm fluctuations from primordial magnetic fields

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