Skip to main content

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

  • Letter
  • Published:

Angular Size and Flux Density of the Small Source in the Crab Nebula at 81.5 Mc/s

Abstract

THE existence of a source in the Crab Nebula with an angular diameter of less than 1 sec of arc has been revealed by observations of interplanetary scintillation at a frequency of 38 Mc/s (ref. 1). The brightness temperature derived from these observations is so great that the synchrotron mechanism may not provide an adequate explanation for the emission. The determination of the spectrum is therefore of great interest.

This is a preview of subscription content, access via your institution

Access options

Buy this article

Prices may be subject to local taxes which are calculated during checkout

Similar content being viewed by others

References

  1. Hewish, A., and Okoye, S. E., Nature, 207, 59 (1965)

    Article  ADS  Google Scholar 

  2. Dennison, P. A., and Hewish, A., Nature, 213, 343 (1967).

    Article  ADS  Google Scholar 

  3. Little, L. T., and Hewish, A., Mon. Not. Roy. Astro. Soc., 134, 221 (1966).

    Article  ADS  Google Scholar 

  4. Little, L. T., Hewish, A., and Dennison, P. A., Planet. Space Sci., 14, 1221 (1966).

    Article  ADS  Google Scholar 

  5. Andrew, B. H., Branson, N. J. B. A., and Wills, D., Nature, 203171 (1964).

  6. Gower, J. F. R., Nature, this issue, p. 1213.

  7. Branson, N. J. B. A., Observatory, 85, 250 (1965).

    ADS  Google Scholar 

  8. Branson, N. J. B. A., Nature, this issue, p. 1211.

  9. Kronberg, P. P., Nature, 212, 1557 (1966).

    Article  ADS  Google Scholar 

  10. Hornby, J. M., and Williams, P. J. S., Mon. Not. Roy. Astro. Soc., 131, 237 (1966).

    Article  ADS  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

BELL, S., HEWISH, A. Angular Size and Flux Density of the Small Source in the Crab Nebula at 81.5 Mc/s. Nature 213, 1214–1216 (1967). https://doi.org/10.1038/2131214a0

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1038/2131214a0

This article is cited by

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.

Search

Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing