3-7 noviembre 2025
Europe/Madrid timezone

Boosting 21-cm constraints on Dark Matter

4 nov. 2025 14:45
15m
Salón de Grados (ADEIT)

Salón de Grados

ADEIT

Talk Cosmology Cosmology

Ponente

Dominic Agius (IFIC, CSIC-UV)

Descripción

The 21-cm signal is emerging as a promising probe of dark matter. However, heating-based constraints are strongly affected by astrophysical uncertainties entering in the choice of fiducial model. I will illustrate this effect for accreting primordial black holes with masses in the range $1-10^3 \, M_{\odot}$. To address this issue, I will then introduce a novel mechanism in which dark matter can boost the 21-cm signal through exotic Lyman-$\alpha$ photons, potentially offering a more robust avenue for constraining dark matter.

Autores primarios

Dr. Daniele Gaggero (INFN Pisa) Dominic Agius (IFIC, CSIC-UV) Dr. Gregory Suczewski (Stony Brook) Dr. Mauro Valli (INFN Rome) Prof. Rouven Essig (Stony Brook) Sergio Palomares-Ruiz (IFIC, CSIC-UV) Tracy Slatyer (MIT)

Materiales de la presentación

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