What are magnetars ?
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A magnetar (a contraction of magnetic star) is a neutron star with an ultra-strong magnetic field. At ~1015 gauss, the magnetic field is a thousand trillion times stronger than the Earth's, and between 100 and 1,000 times stronger than that of a radio pulsar, making them the most magnetic objects known.
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A magnetar is a type of neutron star believed to have an extremely powerful magnetic field (∼109 to 1011 T, ∼1013 to 1015 G).[1] The magnetic-field decay powers the emission of high-energy electromagnetic radiation, particularly X-rays and gamma rays.[2] The theory regarding these objects was proposed by Robert Duncan and Christopher Thompson in 1992, but the first recorded burst of gamma rays thought to have been from a magnetar had been detected on March 5, 1979.[3] During the following decade, the magnetar hypothesis became widely accepted as a likely explanation for soft gamma repeaters (SGRs) and anomalous X-ray pulsars (AXPs). On 1 June 2020, astronomers reported narrowing down the source of fast radio bursts (FRBs), which may now plausibly include "compact-object mergers and magnetars arising from normal core collapse supernovae".[4][5][6][7][8][9]

Artist's conception of a magnetar, with magnetic field lines

Artist's conception of a powerful magnetar in a star cluster
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