Does Supernova 1987A contain a rapidly vibrating neutron star?

Details Does Supernova 1987A contain a rapidly vibrating neutron star? Does Supernova 1987A contain a rapidly vibrating neutron star?

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989natur.338..319w&link_type=abstract

Nature (ISSN 0028-0836), vol. 338, March 23, 1989, p. 319, 320. Research supported by NASA and NSF.

Physics

21

Neutron Stars, Stellar Oscillations, Stellar Radiation, Cyclotron Radiation, Light Modulation, Pulsed Radiation, Stellar Luminosity, Stellar Magnetic Fields, Stellar Rotation

Scientific paper

If the recently reported 0.5 ms-period pulsed optical signal from the direction of Supernova 1987A originated in a young neutron star, its interpretation as a rotational period has difficulties. The surface magnetic field would have to be much lower than expected, and the high rotation rate may rule out preferred nuclear equations of state. It is pointed out here that a remnant radial vibration of a neutron star, excited in the supernova event, may survive for several years with about the observed (gravitationally redshifted) period. Heavy ions at the low-density stellar surface, periodically shocked by the vibration, may efficiently produce narrow pulses of optical cyclotron radiation in a surface field of about a trillion gauss.

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