2 papers
astro-ph.CO2021
Hubble tension in lepton asymmetric cosmology with an extra radiation
Osamu Seto, Yo Toda
We study the fit of cosmological models with two additional free parameters and in addition to the parameters of CDM. We introduce extra radiation compone…
astro-ph.CO2021
Comparing early dark energy and extra radiation solutions to the Hubble tension with BBN
Osamu Seto, Yo Toda
The shorten sound horizon scale at the recombination epoch by introducing extra energy components such as the extra radiation or early dark energy (EDE) is a simple approach to so-…