PIX4572872: Artist's view of a magnetar and its magnetic field - A magnetar with its magnetic field. Artwork - Illustration showing the magnetic field lines of a magnetar that intertwine causing tensions on the surface of the neutron star that partially breaks causing an emission of X-rays and gamma rays. A magnetar is a neutron star with an extremely powerful magnetic field. This artwork shows magnetic field lines of the star causing X and gamma rays burst when they mix / Bridgeman Images