Probing dark relativistic species and their interactions with dark matter through CMB and 21 cm surveys
H Plombat, T Simon, J Flitter… - Journal of Cosmology and …, 2025 - iopscience.iop.org
We investigate the sensitivity of the 21 cm power spectrum from cosmic dawn and the epoch
of reionization to models of free-streaming dark radiation (parameterized through N eff) and …
of reionization to models of free-streaming dark radiation (parameterized through N eff) and …
Does it matter? A more careful treatment of density fluctuations in 21-cm simulations
The cosmological 21-cm signal is sourced from hyperfine transitions in neutral hydrogen
atoms. Yet, although hydrogen atoms belong to the sub-class of baryonic matter, it is …
atoms. Yet, although hydrogen atoms belong to the sub-class of baryonic matter, it is …
Free-Streaming Neutrinos and Their Phase Shift in Current and Future CMB Power Spectra
The cosmic neutrino background and other light relics leave distinct imprints in the cosmic
microwave background anisotropies through their gravitational influence. Since neutrinos …
microwave background anisotropies through their gravitational influence. Since neutrinos …
Reconstructing patchy helium reionization using the cosmic microwave background and large-scale structure
The intergalactic helium became fully ionized by the end of cosmic noon (z∼ 2). Similarly to
the reionization of hydrogen, helium reionization is expected to be patchy, driven by …
the reionization of hydrogen, helium reionization is expected to be patchy, driven by …