Astronomers detect Radio Signal from Galaxy at record-breaking distance

Feb 03, 2023

Pune (Maharashtra), Feb 03 (ANI): Using the data from the Giant Metrewave Radio Telescope (GMRT) near Pune, astronomers of the IISc Bengaluru and McGill University Canada detected a radio signal emitted by atomic hydrogen in an extremely distant galaxy. Although, it is the first confirmed detection of strong lensing of 21 cm emission from a galaxy. 21 cm emission is a direct tracer of the atomic gas content in both nearby and distant galaxies. However, this radio signal is extremely weak. It is nearly impossible to detect the emission from a distant galaxy using current telescopes due to their limited sensitivity.