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Optical Observations of Pulsars

Published online by Cambridge University Press:  12 April 2016

Christian Gouiffes  and
Hakki Ögelman
Christian Gouiffes
Affiliation:
Service d’Astrophysique, CEA/DSM/DAPNIA C.E. Saclay, 91191 Gif-sur-Yvette Cedex -, FRANCE
Hakki Ögelman
Affiliation:
Department of Physics, University of Wisconsin-Madison, 1150, University Avenue, Madison, WI53706 -USA

Extract

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In the course of a programme to study optical pulsars, we have observed at different occasions PSR0540-69, the 50 msec pulsar in the LMC. Like the Crab pulsar, it has been detected at X-rays, optical and radio and its braking index (∼2) determined. In this communication we report some results obtained on this pulsar, in particular the presence of narrow features in the pulse profile and compare it with a nearly simultaneous X-ray observation.

The observations were carried out at the 3.6m telescope at La. Silla observatory, Chile. The instrument consisted on a single channel photometer coupled with a. photomultiplier (GaAs photocathode). The sampling frequency was 10 kHz and the output of the photon counting system was recorded sequentially on magnetic tape. A set of filters and diaphragms were available. A standard analysis was then performed. After corrections to the solar system barycenter, the data were analyzed and the best period determined using the test (Buccheri et al, 1983).

Type
Part 5 High Energy Phenomena
Information
International Astronomical Union Colloquium , Volume 160: Pulsars: Problems and Progress , 1996 , pp. 299 - 300
Copyright
Copyright © Astronomical Society of the Pacific 1996

References

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