GLOSTAR - tracing atomic and molecular gas in the Milky Way

By combining two of the most powerful radio telescopes on Earth, an international team of researchers led by the Max Planck Institute for Radio Astronomy (MPIfR) in Bonn, created the most sensitive maps of the radio emission of large parts of the Northern Galactic plane so far. Contrary to previous surveys, GLOSTAR observed not only the radio continuum in the frequency range from 4-8 GigaHertz in full polarization, but simultaneously also spectral lines that trace the molecular gas and atomic gas via radio recombination lines.