All articles tagged with #cosmic neutrino background
Recent experiments, particularly KATRIN, have set the tightest constraints yet on the mass of the electron neutrino, showing it can be no more than 0.45 eV/c², which has significant implications for understanding the universe's composition and the role of neutrinos in cosmic evolution. Despite these constraints, the exact mass of neutrinos remains unknown, and further research is needed to fully understand their properties and impact on cosmology.
The cosmic neutrino background, a relic from the early stages of the hot Big Bang, has not been directly detected yet. However, evidence for its existence has been found indirectly through its imprints on the cosmic microwave background (CMB) and the clustering of galaxies in the large-scale structure of the Universe. Direct detection of the cosmic neutrino background is challenging due to the extremely tiny cross-section of neutrinos for interacting with other particles. Current experiments are not capable of detecting the signals from these relic neutrinos unless novel physics or technological advancements are involved. Future observations with more precise CMB measurements and large-scale structure surveys may provide further evidence for the cosmic neutrino background.