Some properties of the SN 1987 A pulsar

Details Some properties of the SN 1987 A pulsar Some properties of the SN 1987 A pulsar

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990acasn..31..336z&link_type=abstract

(Acta Astronomica Sinica, vol. 31, no. 4, 1990, p. 336-341) Chinese Astronomy and Astrophysics (ISSN 0275-1062), vol. 15, June 1

Astronomy and Astrophysics

Astrophysics

Pulsars, Stellar Magnetic Fields, Supernova 1987A, Neutron Stars, Oblate Spheroids, Stellar Models

Scientific paper

The surface magnetic field of the submillisecond pulsar SN1987A and its period derivative, as well as the time evolution of these quantities were calculated using two models: a rigid sphere model and a uniform incompressible Maclaurin's spheroid model (which is approximately valid for a newly born rapidly rotating neutron star). Special consideration is given to the evaluation of the effect of oblateness, or the shape distortion due to high rotation, on these properties of the pulsar. It was found that the magnetic field of SN1987A is extremely low. It is concluded that, since the magnetic field is weak and the distance is large, the SN1987A pulsar is unlikely to be a strong gamma-ray emitter.

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