Discovery of a 50 millisecond pulsar in the Large Magellanic Cloud

Details Discovery of a 50 millisecond pulsar in the Large Magellanic Cloud Discovery of a 50 millisecond pulsar in the Large Magellanic Cloud

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...287l..19s&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 287, Dec. 1, 1984, p. L19-L22. Research supported b

Astronomy and Astrophysics

Astrophysics

140

Magellanic Clouds, Pulsars, Supernova Remnants, X Ray Sources, Crab Nebula, Galactic Radiation, Nebulae, Pulse Duration, Pulsed Radiation

Scientific paper

The authors have discovered a 50 ms X-ray pulsar in the Crab-like LMC supernova remnant 0540-693. The pulsar is spinning down with P= 4.79×10-13s s-1, implying a characteristic age of 1660 yr and an energy loss rate of E= 1.5×1038ergs s-1, one-third that of the Crab pulsar. The X-ray luminosity of the surrounding nebula is LX ≈ 1037ergs s-1. Unlike the Crab, the X-ray pulse shape is approximately sinusoidal with one broad maximum per period, and the ratio of pulsed luminosity (in the range 0.2 - 0.4 keV) to Eis an order of magnitude greater than that of the Crab pulsar.

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