Astrophysicists Discover Brightest and Most Distant ‘Space Laser’ Yet
Space lasers may sound like something out of a science fiction novel, but they are very real. Recently, astrophysicists have identified the brightest and most distant space laser known as a ‘gigamaser.’ This incredible phenomenon originates from a massive galactic collision located 8 billion light-years away, where compressed gas is stimulating hydroxyl molecules to emit powerful radio waves at a specific wavelength.
The groundbreaking gigamaser was detected by the MeerKAT radio telescope in South Africa, with some assistance from gravitational lensing. This natural phenomenon amplifies the radio waves as they travel through space, creating a spectacular cosmic display.
Thato Manamela, an astrophysicist at the University of Pretoria in South Africa, explains, “We are witnessing the radio equivalent of a laser from halfway across the Universe. The radio waves are further enhanced during their journey to Earth by a perfectly aligned foreground galaxy, acting as a lens to magnify the cosmic spectacle.”
The term ‘laser’ originated as an acronym for ‘light amplification by stimulated emission of radiation.’ In the case of the gigamaser, this concept is applied to microwave emissions, resulting in a ‘maser.’ Both lasers and masers are generated under similar conditions involving excited atoms or molecules and specific energy photons triggering emission amplification.
The newly discovered gigamaser, known as HATLAS J142935.3–002836, transcends megamaser status and represents an extremely rare and powerful cosmic phenomenon. The energy released by this gigamaser originates from the collision of two galaxies, creating intense gravitational interactions that compress gas and stimulate hydroxyl molecules to emit microwave radiation.
This extraordinary event has traveled a staggering 7.82 billion light-years to reach the MeerKAT radio telescope, breaking distance records and shining brighter than any previous observation. The gravitational lensing effect further enhances the brightness of the gigamaser, providing researchers with valuable insights into galaxy outflows and merging activities.
The findings of this study have been accepted for publication in the journal Monthly Notices of the Royal Astronomical Society Letters and are currently available as a preprint.
