Was the millisecond pulsar in SN1987A spun up or born spinning fast?

Details Was the millisecond pulsar in SN1987A spun up or born spinning fast? Was the millisecond pulsar in SN1987A spun up or born spinning fast?

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989natur.338..321w&link_type=abstract

Nature (ISSN 0028-0836), vol. 338, March 23, 1989, p. 321, 322. Research supported by NSF and NASA.

Physics

14

Pulsars, Stellar Rotation, Supernova 1987A, Protostars, Supergiant Stars

Scientific paper

It is argued here that the millisecond pulsar in SN1987A has been spun up by accretion. The accreted angular momentum in this case comes from the mixed mantle and helium core of the ejecta, of which roughly 0.1 solar mass fell back during the first day after the explosion. This sizable mass, and hence angular momentum, of the reimploded material is at least partly a consequence of the blue supergiant nature of the progenitor star.

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