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magnetar
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magnetar

astronomy
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Quick Summary

A magnetar is a type of neutron star with an extremely powerful magnetic field, ranging from 1014 to 1015 gauss. Neutron stars themselves are incredibly dense, with a diameter of about 20 km and masses between 1.18 and 1.97 times that of the Sun. Their density is about 1014 times that of water, similar to the density within an atomic nucleus.1

Magnetars are associated with highly energetic phenomena, including the emission of powerful bursts of X-rays and gamma rays. These bursts are thought to be caused by the extreme magnetic fields stressing and fracturing the neutron star's crust. While the exact composition of a magnetar's core is still debated, theories suggest it could include hyperons, kaons, or pions.1

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
2 Britannica Sources
  1. neutron star
  2. Sun - Flares of the Sun

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