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:

Universal microwave radiation and extragalactic γ radiation

Abstract

The detection of an extragalactic component of celestial γ-radiation1,2 has stimulated the question of the possible contributions from external point sources, especially since the detection of γ rays from NGC4151 (ref. 3) and from 3C273 (ref. 4). Here we discuss the role of the inverse Compton effect (ICE) of relativistic electrons on universal microwave photons for the production of high energy γ rays from normal spiral galaxies.

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. Fichtel, C. E. et al. Astrophys. J. 198, 163 (1975).

    Article  ADS  Google Scholar 

  2. Fichtel, C. E. et al. Astrophys. J. 217, L9 (1977).

    Article  ADS  CAS  Google Scholar 

  3. Schönfelder, V. Nature 274, 344 (1978).

    Article  ADS  Google Scholar 

  4. Swanenburg, B. N. et al. Nature 275, 298 (1978).

    Article  ADS  Google Scholar 

  5. Strong, A. W., Wolfendale, A. W. & Worrall, D. M. Mon. Not. R. astr. Soc. 175, 23 (1976).

    Article  ADS  Google Scholar 

  6. Lichti, G. G., Bignami, G. F. & Paul, J. A. Astrophys. Space Sci. 56, 403 (1978).

    Article  ADS  Google Scholar 

  7. Weinberg, S. in Gravitation and Cosmology (Wiley, New York, 1972).

    Google Scholar 

  8. Cummings, A. C., Stone, E. C. & Vogt, R. E. Proc. 13th Int. Cosmic Ray Conf. 1, 335 (1973).

    ADS  Google Scholar 

  9. Prince, T. Astrophys. J. 227, 676 (1979).

    Article  ADS  CAS  Google Scholar 

  10. Truran, J. W. & Cameron, A. G. W. Astrophys. Space Sci. 14, 179 (1971).

    Article  ADS  CAS  Google Scholar 

  11. Schlickeiser, R. thesis, Univ. Kiel (1978).

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Niemann, W., Thielheim, K. Universal microwave radiation and extragalactic γ radiation. Nature 282, 48–50 (1979). https://doi.org/10.1038/282048a0

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1038/282048a0

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