Optical pulsations in the large Magellanic Cloud remnant 0540-69.3

Details Optical pulsations in the large Magellanic Cloud remnant 0540-69.3 Optical pulsations in the large Magellanic Cloud remnant 0540-69.3

Feb 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985natur.313..659m&link_type=abstract

Nature (ISSN 0028-0836), vol. 313, Feb. 21, 1985, p. 659-661.

Physics

82

Magellanic Clouds, Pulsars, Supernova Remnants, X Ray Stars, Crab Nebula, Pulsed Radiation, Visible Spectrum

Scientific paper

The X-ray pulsar PSR 0540-693 was discovered in the Large Magellanic Cloud supernova remnant, 0540-69.3, by Seward, Harnden and Helfand, as a pulse, with repetition period ≡50 ms, in Einstein Observatory data. Previously, Clark et al. had noted that this remnant resembles the Crab Nebula because of the X-ray power law spectrum and suggested that the nebular emission was synchrotron radiation powered by a central pulsar. The authors have now detected pulsed optical emission for the X-ray pulsar, having a time-averaged magnitude of ≡22.7.

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