Extragalactic Radio Sources

  • Françoise Combes
  • Patrick Boissé
  • Alain Mazure
  • Alain Blanchard
Part of the Astronomy and Astrophysics Library book series (AAL)


Twelve years after the publication of the first results obtained by Jansky in 1932, which marked the beginning of radio astronomy, Reber observed a radio-emission maximum in the constellation Cygnus. It was the first detection of Cygnus A, one of the brightest of all extragalactic sources (that is, located outside our Galaxy) in the radio region. These observations, made at low frequencies (160 MHz) and with the aid of small receivers, gave only a rough estimate of the position of the source. It was necessary to await the construction of interferometers (in Australia by Bolton and Stanley around 1948 and simultaneously in Britain by Ryle and Smith; the resolution obtained was of the order of 10′) before the radio emission could be better localized and possibly associated with a known object.


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  1. Baan, W. A., and McKee, M. R. (1985)Astron. Astrophys. 143, 136.Google Scholar
  2. Blandford, R. D., and Rees, M. J. (1974) Mon. Not. Roy. Astron. Soc. 169, 395.ADSGoogle Scholar
  3. Bridle, A. H., and Perley, R. A. (1984) Ann. Rev. Astron. Astophys. 22, 319.ADSCrossRefGoogle Scholar
  4. Brown, R. L., Broderick, J. J., and Mitchell, K. J. (1986) Astrophys. J. 306, 107.ADSCrossRefGoogle Scholar
  5. Burns, J. O., Feigelson, E. D., and Schreier, E. J. (1983) Astrophys. J. 273, 128.ADSCrossRefGoogle Scholar
  6. Charlesworth, M., and Spencer, R. E. (1982) Mon. Not. Roy. Astron. Soc. 200, 933.ADSGoogle Scholar
  7. Cotton, W. D., et al. (1980) Astrophys. J. 238, L123.ADSCrossRefGoogle Scholar
  8. Gunn, J. E., Longair, M. S., and Rees, M. J. (1978) Observational Cosmology (Saas-Fee Advanced Course 8, Geneva Observatory, Geneva ).Google Scholar
  9. Kellerman, K. I., and Pauliny-Toth, I. I. K (1981)Annu. Rev. Astron. Astrophys. 19, 373.Google Scholar
  10. Kellerman, K. I., et al. (1981)Astmn. Astrophys. 97, Ll.Google Scholar
  11. Leahy, J. R, and Williams, A. G. (1984) Mon. Not. Roy. Astron. Soc. 210, 929.ADSGoogle Scholar
  12. Lelièvre, G., Nieto, J. L., Horville, D., Renard, L., and Servan, B. (1984) Astron. Astrophys. 138, 49.ADSGoogle Scholar
  13. Longair, M. S. (1978) in Observational Cosmology (Saas-Fee Advanced Course 8, Geneva Observatory, Geneva ).Google Scholar
  14. Miley, G. (1980) Annu. Rev. Astron. Astrophys. 18, 165.ADSCrossRefGoogle Scholar
  15. Norman, M. L., Smarr, L., Winkler, K. H. A., and Smith, M. D. (1982) Astron. Astrophys. 113, 285.ADSGoogle Scholar
  16. Pacini, F., Ryter, C., and Strittmatter, R A. (1979) Extragalactic High Energy Astrophysics (Saas-Fee Advanced Course 9, Geneva Observatory, Geneva ).Google Scholar
  17. Pearson, T. J. et al. (1981) Nature 290, 365.ADSCrossRefGoogle Scholar
  18. Perley, R. A., Dreher, J. W., and Cowan, J. J. (1984) Astrophys. J. 285, L35.ADSCrossRefGoogle Scholar
  19. Strittmatter, P. A. (1979) in Extragalactic High Energy Physics (Saas-Fee Advanced Course 9, Geneva Observatory, Geneva ).Google Scholar
  20. Strom, R. G., Willis, A. G., and Wilson, A. S. (1978) Astron. Astrophys. 68, 367.ADSGoogle Scholar
  21. Verschuur, G. L., and Kellermann, K. I. (1988) Galactic and Extragalactic Radio Astronomy (Springer, Berlin, Heidelberg).Google Scholar
  22. Willis, A. G., Strom, R. G., Bridle, A. H., and Fomalont, E. B. (1981) Astron. Astrophys. 95, 250.ADSGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1995

Authors and Affiliations

  • Françoise Combes
    • 1
  • Patrick Boissé
    • 2
  • Alain Mazure
    • 3
  • Alain Blanchard
    • 4
  1. 1.Observatoire de ParisDEMIRMParisFrance
  2. 2.Ecole Normale SupérieureParis Cedex 5France
  3. 3.GRAAL, Université de Montpellier IIMontpellier Cedex 5France
  4. 4.Observatoire de StrasbourgStrasbourgFrance

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