2 papers
astro-ph.CO2025
21-cm Constraints on Dark Matter Annihilation after an Early Matter-Dominated Era
Hwan Bae, Adrienne L. Erickcek, M. Sten Delos +1
Although it is commonly assumed that relativistic particles dominate the energy density of the universe quickly after inflation, a variety of well-motivated scenarios predict an ea…
hep-ph2025
Constraining inhomogeneous energy injection from annihilating dark matter and primordial black holes with 21-cm cosmology
Yitian Sun, Joshua W. Foster, Julian B. Muñoz
The cosmic dawn 21-cm signal is a highly sensitive probe of any process which injects energy into the intergalactic medium, enabling novel searches for anomalous energy injection b…