Fuzzy Dark Matter and the 21 cm Power Spectrum

We model the 21cm power spectrum across Cosmic Dawn and Epoch of Reionization (EoR) in fuzzy dark matter (FDM) cosmologies. The suppression small mass halos FDM models leads to a delay onset redshift these epochs relative cold (CDM) scenarios. This strongly impacts its evolution. at given stage EoR/Cosmic process is also modified: general, amplitude fluctuations boosted by enhanced bias factor galaxy hosting FDM. forecast prospects for discriminating between CDM with upcoming measurements from HERA, accounting degeneracies astrophysical parameters properties. If constitutes entirety particle 10-21eV, HERA can determine within 20 percent 2-sigma confidence.