This paper is available on arxiv under CC 4.0 license. Authors: Vitor da Fonseca, Instituto de Astrof´ısica e Ciˆencias do Espa¸co, Faculdade de Ciˆencias da Universidade de Lisboa; Tiago Barreiro, Instituto de Astrof´ısica e Ciˆencias do Espa¸co, Faculdade de Ciˆencias da Universidade de Lisboa and 2ECEO, Universidade Lus´ofona; Nelson J. Nunes, Instituto de Astrof´ısica e Ciˆencias do Espa¸co, Faculdade de Ciˆencias da Universidade de Lisboa.
The standard hot Big Bang model predicts that the Universe is filled with a background of thermal relic neutrinos, called the cosmic neutrino background , with a temperature and density of the order of the cosmic microwave background photons . Neutrinos are held in thermal equilibrium with the primordial plasma by electroweak interactions until the temperature of the Universe drops to T ≃ 1 MeV.
The standard hot Big Bang model predicts that the Universe is filled with a background of thermal relic neutrinos, called the cosmic neutrino background , with a temperature and density of the order of the cosmic microwave background photons . Neutrinos are held in thermal equilibrium with the primordial plasma by electroweak interactions until the temperature of the Universe drops to T ≃ 1 MeV.