magnetar is a type of neutron star with an extremely powerful magnetic field magnetic-field decay or dissipation powers the emission of high-energy electromagnetic radiation, particularly X-rays & gamma rays. this may explain properties of transient sources of gamma rays, now known as soft gamma repeaters also suggested magnetars source of fast radio bursts magnetars formed by collapse of a star with a mass ten to twenty-fives times that of the Sun. magnetars differentiated from other neutron stars by even stronger magnetic fields, & rotating more slowly . magnetar's magnetic field bursts of X-rays & gamma rays. active life magnetar short compared to other celestial bodies. Their strong magnetic fields decay after about 10,000 years, after which activity & strong X-ray emission cease. starquakes triggered on the surface of the magnetar disturb magnetic field leading to powerful gamma-ray flare emissions magnetars possess powerful magnetic fields. a hundred million times stronger than any man-made magnet. a trillion times more powerful than the field surrounding Earth.
