Published April 1990
| Version v1
Journal article
Period measurements of the 50 millisecond pulsar PSR 0540 - 69 with the Exosat satellite
Creators
- 1. Max-Planck-Institut fuer extraterrestrische Physik, Garching (Germany, F.R.)
Description
The period of the 50 ms pulsar PSR 0540 - 69 in the Large Magellanic Cloud was determined using five separate X-ray observations with the Exosat satellite in the interval August 12, 1984 to June 30, 1985. Together with Einstein observations and contemporaneous optical data, the Exosat periods can be fitted well to a quadratic curve yielding a braking index of 2.74 + or - 0.10. This behavior is not compatible with the optical and X-ray observations commencing about a year after Exosat, indicating the PSR 0540 - 69 is susceptible to discontinuous changes in its spin-down behavior. 15 refs
Additional details
Publishing Information
- Journal Title
- Astrophysical Journal
- Journal Volume
- 353
- Series
- Astrophys. J.
- Journal Page Range
- L21-L23
- ISSN
- 0004-637X
- CODEN
- ASJOA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 21069412
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- COSMIC X-RAY SOURCES; CRAB NEBULA; MAGELLANIC CLOUDS; PHOTOMETRY; PULSARS; ROTATION; SATELLITES; TIME MEASUREMENT; VISIBLE RADIATION; X RADIATION
- Descriptors DEC
- COSMIC RADIO SOURCES; COSMIC RAY SOURCES; ELECTROMAGNETIC RADIATION; GALAXIES; IONIZING RADIATIONS; NEBULAE; RADIATIONS; SUPERNOVA REMNANTS