Discovery of a 50 millisecond pulsar in the Large Magellanic Cloud.
Abstract
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.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- December 1984
- DOI:
- Bibcode:
- 1984ApJ...287L..19S
- Keywords:
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- Magellanic Clouds;
- Pulsars;
- Supernova Remnants;
- X Ray Sources;
- Crab Nebula;
- Galactic Radiation;
- Nebulae;
- Pulse Duration;
- Pulsed Radiation;
- Astronomy;
- Magellanic Clouds:Supernova Remnants;
- Magellanic Clouds:X-Ray Pulsars;
- Supernova Remnants:Magellanic Clouds;
- Supernova Remnants:X-Ray Pulsars;
- X-Ray Pulsars:Magellanic Clouds;
- X-Ray Pulsars:Supernova Remnants