MeerKAT Telescope Detects Most Distant Cosmic Laser
Astronomers using South Africa's MeerKAT radio telescope have identified the most distant hydroxyl megamaser, a natural 'space laser,' located over eight billion light-years away.
Astronomers utilizing South Africa's MeerKAT radio telescope have detected the most distant hydroxyl megamaser to date, situated in the galaxy system HATLAS J142935.3–002836, over eight billion light-years from Earth.
Hydroxyl megamasers are intense radio emissions produced when hydroxyl molecules in merging galaxies amplify radio waves, akin to lasers but operating at radio wavelengths. The discovery was facilitated by a phenomenon known as gravitational lensing, where a foreground galaxy's mass bends and magnifies the light from the more distant galaxy, enhancing the signal detected by MeerKAT.
Dr. Thato Manamela, lead author of the study and a postdoctoral researcher at the University of Pretoria, described the system as "truly extraordinary," noting that it represents "the radio equivalent of a laser halfway across the universe."
This discovery provides valuable insights into the processes occurring in the early universe, particularly concerning galaxy mergers and star formation. The findings have been accepted for publication in the Monthly Notices of the Royal Astronomical Society.