NASA NTRS · 19890046949
Submillisecond optical pulsar in supernova 1987A
Abstract
An optical pulsar with frequency f = 1,968,629 Hz has been detected at the location of supernova 1987A in the LMC. The brightness of the pulsed light increased from magnitude 19 to 18 during a 7-hr observation period starting on 18.1 January 1987 UT. The frequency of the pulsar during this same period varied in a nearly sinusoidal manner, with an amplitude of 1.5 x 10 to the -3rd Hz and a period of 8 hr. If this is interpreted as the result of a binary orbit, it suggests that there may be a Jupiter-size object orbiting the pulsar at a distance of 10 to the 6th km.
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Kristian, J., Pennypacker, C. R., Morris, D. E., Muller, R. A., Middleditch, J., Hamuy, M. A., Kunkel, W. E., Imamura, J. N., Lucinio, R., Steiman-Cameron, T. Y.. 1989-03-16. Submillisecond optical pulsar in supernova 1987A. https://ntrs.nasa.gov/citations/19890046949
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