Astronomers discover mysterious pulsing object that may be new class of star
29 May 2022
Astronomers have discovered mysterious objects that emit a pulsating radio wave beam every 20 minutes. The team thinks it could be a new class of slowly rotating neutron stars with a super-strong magnetic field. Duplicated signs were detected during the rather three months of 2018 but then disappeared, suggesting that they are associated with dramatic transient events such as star tremors.
So, what is GLEAM-XJ162759.5-523504?
We know that this is a radio wave transient. “Radio transients are turned on and off in radio waves,” say Harley Walker.”Many phenomena have been detected over the years. But she says the key feature of radio transients is “back and forth.” Radio transient phenomena appear and disappear, confusing observational astronomers. There is not enough observational data to understand what generated the signal.
The last light of a dying star
There are two types of transients. “Slow Transient” appears within a few days and disappears after months. Supernovae shine brightly when a dying star releases the outer atmosphere with an explosion and gradually darkens as the star debris temperature decreases. And there is a “fast transient” that flashes every few milliseconds. The pulsar is a celestial body that rotates neutron stars at high speed while blinking bright radio waves generated by the magnetic field of the dead star.
A serendipitous experiment
This object is an undergraduate project led by Dr. Harley Walker and discovered by Tyrone Odoherty using a new method of searching for changes in the night sky. “I didn’t participate in the project because I wanted to find something, but to see if the new technology was feasible,” Odohati says. The data Odohati selected came from an empty survey of the rich centers of our galaxy, which is packed with radio emissions.