Skip to main content
SpringerLink
Log in

Does PSR0329 + 54 have companions?

  • Letter
  • Published:

From Nature

View current issue Submit your manuscript

Abstract

An extensive pulse timing programme has been carried out over the past 10 years for several pulsars1–5. The timing observations revealed a wide range of different effects such as glitches, noise in the pulsar rotation and unexpectedly large second time derivatives of the rotation frequency. We suggest here that these unexpectedly large values of v̈ may be caused by a binary motion with an orbital period, Pb, longer than the span of timing observations. Even a distant planet of a relatively low mass (100 M⊕ for Pb = 50 yr) would influence v̈. In the case of PSR0329+54, besides a large v̈ term, a quasi-sinusoidal modulation shows up in timing residuals. This 3-yr periodicity may be caused by: (1) a change in pulse shape, (2) precession of a magnetic dipole axis, or (3) a small planet (m = 0.06 − 0.57 M⊕) orbiting the pulsar.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Gullahorn, G. E. & Rankin, J. M. Astr. J. 83, 1219–1224 (1978).

    Article  ADS  Google Scholar 

  2. Taylor, J. H., Fowler, L. A. & McCulloch, P. M. Nature 277, 437–440 (1979).

    Article  ADS  Google Scholar 

  3. Gullahorn, G. E., Isaacman, R., Rankin, J. M. & Payne, R. R. Astr. J. 82, 309–312 (1977).

    Article  ADS  Google Scholar 

  4. Groth, E. J. Astrophys. J. Suppl. Ser. 29, 431–466 (1975).

    Article  ADS  Google Scholar 

  5. Helfand, D. J., Taylor, J. H., Backus, P. R. & Cordes, J. M. Astrophys. J. (submitted).

  6. Manchester, R. N. & Taylor, J. H. Pulsars (Freeman, San Francisco, 1977).

    Google Scholar 

  7. Cordes, J. M. Astrophys. J. (submitted).

  8. Cordes, J. M. & Helfand, D. J. Astrophys. J. (submitted).

  9. Baym, G., Pethick, C., Pines, D. & Ruderman, M. Nature 224, 872–874 (1969).

    Article  ADS  Google Scholar 

  10. Pines, D., Shaham, J. & Ruderman, M. Nature phys. Sci. 237, 83–84, 96 (1972).

    Article  ADS  Google Scholar 

  11. Manchester, R. N., Hamilton, P. A., Goss, W. M. & Newton, L. M. Proc. Astr. Soc. Austr. 3, 81–83 (1976).

    Article  ADS  Google Scholar 

  12. Gullahorn, G. F. & Rankin, J. M. Bull. Am. Astr. Soc. 9, 562 (1978).

    ADS  Google Scholar 

  13. Smith, F. G. Pulsars (Cambridge University Press, 1977).

    Google Scholar 

  14. Lamb, D. Q. & Lamb, F. K. Astrophys.J. 204, 168–186 (1976).

    Article  ADS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Institute of Theoretical Physics, Warsaw University, 00-681, Warsaw, Hoża 69, Poland

    M. Demiański & M. Prószyński

Authors
  1. M. Demiański
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. M. Prószyński
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Demiański, M., Prószyński, M. Does PSR0329 + 54 have companions?. Nature 282, 383–385 (1979). https://doi.org/10.1038/282383a0

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1038/282383a0

  • Springer Nature Limited

This article is cited by

Search

Navigation