It is the most distant atomic hydrogen radio signal “by a large margin” and it could teach us a great deal about star formation.
Astronomers from McGill University in Canada and the Indian Institute of Science (IISc) in Bengaluru detected an atomic hydrogen radio signal originating 8.8 billion light-years from Earth.
As the statement points out, “this is also the first confirmed detection of strong lensing of 21 cm emission from a galaxy.”
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This makes it the most distant atomic hydrogen radio signal ever observed, a press statement reveals. They pinpointed the signal — with the aid of gravitational lensing — in data from the Giant Metrewave Radio Telescope (GMRT) in Pune, India.
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