Scientists recently reported a dense magnetic star erupting violently. The star spews out as much energy as a billion suns .
It happened in a fraction of a second.
This type of star, known as a magnetar, is a neutron star with a very strong magnetic field. Magnetars often fire spectacularly and without warning.
Although magnetars can be thousands of times brighter than our sun, their eruptions are so brief and unpredictable that it is challenging for astrophysicists to find and study them.
However, researchers recently managed to capture one of these flares and quantify the oscillations in the brightness of the magnetar as it erupted. Scientists discovered that magnetars release as much energy as our sun produces in 100,000 years and it does so in just 1/10th of a second.
Reporting from Space, Wednesday (5/1), a neutron star is formed when a massive star collapses at the end of its life. When a star dies in a supernova, the protons and electrons in its core are crushed into a compressed solar mass that combines intense gravity with high-speed rotation and powerful magnetic forces.
As a result, a neutron star, measuring roughly 1.3 to 2.5 solar masses—one solar mass is the mass of our sun, or about 330,000 Earths—is crammed into a sphere only 20 kilometers in diameter.
Magnetars are neutron stars with magnetic fields that are 1,000 times stronger than other neutron stars. Magnetars are more powerful than any other magnetic object in the universe.