Magnetar A magnetar is a neutron star with an extremely powerful magnetic field, the decay of which powers the emission of copious amounts of high-ene
{"Image DocumentName": "Magnetar", "Image ImageDescription": "A magnetar is a neutron star with an extremely powerful magnetic field, the decay of which powers the emission of copious amounts of high-energy electromagnetic radiation, particularly X-rays and gamma-rays. Magnetars are somewhere around 20 kilometers in diameter. Despite this, they are substantially more massive than our Sun. Magnetars are so compressed that a thimbleful of its material is estimated to weigh over 100 million tons. Most magnetars recorded rotate very rapidly, at least several times per second. The active life of a magnetar is short. Their strong magnetic fields decay after about 10,000 years, after which point activity and strong X-ray emission cease. Given the number of magnetars observable today, one estimate puts the number of dead magnetars in the Milky Way at 30 million or more. Quakes triggered on the surface of the magnetar cause great volatility in the star and the magnetic field which encompasses it, often leading to extremely powerful gamma ray flare emissions which have been recorded on Earth in 1979, 1998 and 2004.[", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}