Irregularities in the Crab Pulsar Wobble

Article metrics

Abstract

THIS article presents new measurements of the arrival times of optical pulses from the Crab pulsar, NP 0532. The observations were obtained at Hamburg Observatory (Bergedorf) with a 60 cm refractor and a data acquisition system with an on-line computer (PDP-8/S). Comparison of our results with those obtained by Boynton et al.1 and Richards et al.2 does not support the assumption of a periodic wobble with a period of 77 days (ref. 2).

Access options

Rent or Buy article

Get time limited or full article access on ReadCube.

from$8.99

All prices are NET prices.

References

  1. 1

    Boynton, P. E., Groth, E. J., Partridge, R. B., and Wilkinson, D. T., Astrophys. J. Lett., 157, L197 (1969).

  2. 2

    Richards, D. W., Pettengill, G. H., Counselman, C. C. III, and Rankin, J. M., Astrophys. J. Lett., 160, L1 (1970).

  3. 3

    Høg, E., Astron. Astrophys. 4, 94, (1970).

  4. 4

    Warner, B., Nather, R. E., and MacFarlane, M., Nature, 222, 233 (1969).

  5. 5

    Clemence, G. M., and Szebehely, V., Astron. J., 72, 1324 (1967).

  6. 6

    Boynton, P. E., Groth, E. J. III, Partridge, R. B., and Wilkinson, D. T., IAU Circ. No. 2179 (1969).

  7. 7

    Richards, D. W., Pettengill, G. H., Roberts, J. A., and Counselman, C. C. III, IAU Circ. No. 2181 (1969).

  8. 8

    Goldwire, H. C., and Michel, F. C., Astrophys. J. Lett., 156, L111 (1969).

  9. 9

    Ruderman, M., Nature, 225, 838 (1970).

  10. 10

    Hills, J. G., Nature, 226, 730 (1970).

  11. 11

    Sutherland, P., Baym, G., Pethick, C., and Pines, D., Nature, 225, 353 (1970).

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Cite this article

HØG, E., LOHSEN, E. Irregularities in the Crab Pulsar Wobble. Nature 227, 1229–1230 (1970) doi:10.1038/2271229a0

Download citation

Further reading

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.