4 papers
Refitting cosmological data with neutrino mass and degeneracy
Shek Yeung, Wangzheng Zhang, Ming-chung Chu
A simple and natural extension of the standard Lambda cold dark matter (CDM) model is to allow relic neutrinos to have finite chemical potentials. We confront this CDM…
Measuring neutrino mass and asymmetry with matter pairwise velocities
Wangzheng Zhang, Ming-chung Chu, Rui Hu +2
Neutrinos are believed to be the most abundant fermions in the Universe, but their masses are unknown, except for being non-zero but much smaller than other fermions. Cosmological…
Impact of light sterile neutrinos on cosmological large scale structure
Rui Hu, Ming-chung Chu, Shek Yeung +1
Sterile neutrinos with masses on the scale are promising candidates to account for the origin of neutrino mass and the reactor neutrino anomalies. The mixing between…
Measuring the Hubble constant through the galaxy pairwise peculiar velocity
Wangzheng Zhang, Ming-chung Chu, Shihong Liao +2
The Hubble constant , the current expansion rate of the universe, is one of the most important parameters in cosmology. The cosmic expansion regulates the mutually approaching…