The uGMRT confirms sharp reduction of atomic hydrogen in early universe

A team of astronomers from the National Centre for Radio Astrophysics (NCRA-TIFR) in Pune has used the upgraded Giant Metrewave Radio Telescope (GMRT) to find evidence for a sharp reduction in the amount of atomic hydrogen gas in galaxies over a 1-billion-year interval, from 9 billion years ago to 8 billion years ago. This detection of a rapid change in the atomic gas mass of galaxies in the early Universe helps to solve a long-standing open problem regarding the evolution of star-formation activity in the Universe. The research has been published in the June 1 issue of The Astrophysical Journal Letters.