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Fuzzy Dark Matter and the 21cm Power Spectrum

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arxiv 2101.07177 v2 pith:W73GBEL3 submitted 2021-01-18 astro-ph.CO physics.comp-ph

Dana Jones (1) , Skyler Palatnick (1) , Richard Chen (1) , Angus Beane (2) , Adam Lidz (1) ((1) University of Pennsylvania department of Physics , Astronomy , (2) Harvard University , Smithsonian Center for Astrophysics) This is my paper · ORCID
classification astro-ph.COphysics.comp-ph
keywords darkmatterpowerspectrummasscosmicdawnfuzzy
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We model the 21cm power spectrum across the Cosmic Dawn and the Epoch of Reionization (EoR) in fuzzy dark matter (FDM) cosmologies. The suppression of small mass halos in FDM models leads to a delay in the onset redshift of these epochs relative to cold dark matter (CDM) scenarios. This strongly impacts the 21cm power spectrum and its redshift evolution. The 21cm power spectrum at a given stage of the EoR/Cosmic Dawn process is also modified: in general, the amplitude of 21cm fluctuations is boosted by the enhanced bias factor of galaxy hosting halos in FDM. We forecast the prospects for discriminating between CDM and FDM with upcoming power spectrum measurements from HERA, accounting for degeneracies between astrophysical parameters and dark matter properties. If FDM constitutes the entirety of the dark matter and the FDM particle mass is 10-21eV, HERA can determine the mass to within 20 percent at 2-sigma confidence.

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Forward citations

Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Cosmo-SPINN: Fuzzy Dark Matter Simulations with Physics-Informed Generative Networks

    astro-ph.CO 2026-07 conditional novelty 6.0 of 10

    Physics-informed generative U-Nets evolve and super-resolve fuzzy dark matter fields under Schrödinger–Poisson constraints with far less supervised data than pure data-driven baselines.

  2. Wavelet-Scattering Signatures of Fuzzy Dark Matter in Simulated 21 cm Brightness-Temperature Maps

    astro-ph.CO 2025-11 conditional novelty 5.0 of 10

    Wavelet scattering coefficients S1 and R=S2/S1 of simulated 21 cm maps distinguish fuzzy dark matter from CDM and survive SKA1-Low-style thermal noise, though abstract-level Fisher-forecast claims are absent from the body.

  3. Probing Long-Range Forces Between Neutrinos with Cosmic Structures

    hep-ph 2024-12 conditional novelty 5.0 of 10

    Neutrino long-range forces stronger than gravity would make the cosmic neutrino background collapse into bound states, and existing matter power spectrum and reionization data now exclude a band of couplings for force...

  4. Simulation-based inference on warm dark matter from HERA forecasts

    astro-ph.CO 2024-12 conditional novelty 5.0 of 10

    Using neural ratio estimation on mock HERA power spectra, the authors forecast 95% lower bounds on the thermal WDM mass that exceed the 5.3 keV Lyman-alpha limit when the galaxy threshold mass Mturn is below 1e8 M_sun.

  5. Analytical modeling of the one-dimensional power spectrum of 21-cm forest based on a halo model method

    astro-ph.CO 2024-11 conditional novelty 5.0 of 10

    A halo-model formula for the 1D power spectrum of the 21-cm forest is presented and shown to match small-scale simulations built from the same gas and temperature assumptions.

  6. Risk-based framework to determine climate-informed design storms for road drainage infrastructure

    physics.geo-ph 2025-08 unverdicted novelty 4.0 of 10

    A risk-index method combining climate projections, physiographic hazard, and socioeconomic vulnerability scales future design storms for Ontario road drainage.

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