134 citations · 786 across the 21 of their papers we have counts for
3 papers · 1 filter
EMPRESS. VIII. A New Determination of Primordial He Abundance with Extremely Metal-Poor Galaxies: A Suggestion of the Lepton Asymmetry and Implications for the Hubble Tension
Akinori Matsumoto, Masami Ouchi, Kimihiko Nakajima +42
The primordial He abundance is a powerful probe of cosmology. Currently, is best determined by observations of metal-poor galaxies, while there are on…
Evolution of perturbations and cosmological constraints in decaying dark matter models with arbitrary decay mass products
Shohei Aoyama, Toyokazu Sekiguchi, Kiyotomo Ichiki +1
Decaying dark matter (DDM) is a candidate which can solve the discrepancies between predictions of the concordance CDM model and observations at small scales such as the number…
Formulation and constraints on decaying dark matter with finite mass daughter particles
Shohei Aoyama, Kiyotomo Ichiki, Daisuke Nitta +1
Decaying dark matter cosmological models have been proposed to remedy the overproduction problem at small scales in the standard cold dark matter paradigm. We consider a decaying d…