magnetarn.
/ˈmaɡnᵻˌtɑː/, U.S. /ˈmæɡnəˌtɑr/ Astronomy.
A neutron star with a much stronger magnetic field than ordinary neutron stars.
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neutron star1934
pulsar1968
pulsator1977
magnetar1992
1992 R. C. Duncan & C. Thompson in Astrophysical Jrnl.: Lett. 392 10/1 From here on, we refer to such a highly magnetized neutron star as a magnetar.
1995 Monthly Notices Royal Astron. Soc. 274 257/1 A magnetar spins down very rapidly by the usual mechanism of a magnetized, relativistic wind.
1998 Daily Tel. 30 Sept. 10/6 They believe the star is an unusual X-ray star known as SGR 1900+14—a ‘magnetar’. This is a kind of neutron star.
2003 Astrophysical Jrnl. 595 346 Young, rapidly rotating magnetars whose spin and magnetic moment point in opposite directions emit high-energy neutrinos from their polar caps through photomeson interactions.
This is a new entry (OED Third Edition, March 2000; most recently modified version published online March 2022).
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n.1992