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Pulsed and unpulsed light from the Vela and Crab pulsars

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Abstract

OBSERVATIONS of the Vela and Crab pulsars were made with the Image Photon Counting System1 (IPCS) at the ƒ/15 focus of the 3.9 m Anglo–Australian Telescope (AAT), on 9 and 10 March 1978. Observations of the unpulsed light from the Crab pulsar have been obtained with an electronographic camera5 used with the 0.9 m Yapp reflector of the Royal Greenwich Observatory (RGO). We obtained phase-resolved pictures of the Vela pulsar2,3, positively identifying it with the faint, blue candidate star4 and detecting a relatively strong, unpulsed light component. We also detected a weak unpulsed component from the Crab pulsar.

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Authors and Affiliations

  1. Anglo-Australian Observatory, P.O. Box 296, Ep**, New South Wales, 2121, Australia

    BRUCE A. PETERSON, PAUL MURDIN & PATRICK WALLACE

  2. CSIRO Division of Radiophysics, P.O. Box 76, Ep**, New South Wales, 2121, Australia

    R. N. MANCHESTER

  3. Royal Greenwich Observatory, Herstmonceux Castle, Hailsham, East Sussex, UK

    A. J. PENNY, A. JORDEN, K. F. HARTLEY & D. KING

Authors
  1. BRUCE A. PETERSON
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  2. PAUL MURDIN
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  3. PATRICK WALLACE
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  4. R. N. MANCHESTER
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  5. A. J. PENNY
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  6. A. JORDEN
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  7. K. F. HARTLEY
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  8. D. KING
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PETERSON, B., MURDIN, P., WALLACE, P. et al. Pulsed and unpulsed light from the Vela and Crab pulsars. Nature 276, 475–478 (1978). https://doi.org/10.1038/276475a0

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