Advertisement

Linear size versus redshift and linear size versus power for extended extragalactic radio sources

  • Alexander Rosen
  • Paul J. Wiita
VI. Radio Observations and Modeling
Part of the Lecture Notes in Physics book series (LNP, volume 307)

Abstract

A three-dimensional boundary-following code, altered to allow for a two-phase external medium, is used to simulate extragalactic jets as they propagate through a power-law isothermal galactic halo and on into a hotter, less dense, and uniform intergalactic medium (IGM). Good agreement is obtained with regard to the relationships between the overall linear size of such radio sources and both the total radio power (at fixed redshift) and the cosmological redshift (at fixed power). The excellent agreement of the latter with the latest observational results gives strong support to the notion that much of the X-ray background is due to a pervasive diffuse thermal component which is dense enough to be of cosmological significance.

Keywords

Galactic Halo Gaseous Halo Cosmological Epoch Total Radio Power 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Alexander, P. and Leahy, J.P. 1987, Mon. Not. Roy. astr. Soc., 225, 1.Google Scholar
  2. Eales, S.A. 1985, Mon. Not. Roy. astr. Soc., 217, 179.Google Scholar
  3. Forman, W., Jones, C. and Tucker, W. 1985, Astrophys. J., 293, 102.Google Scholar
  4. Gopal-Krishna and Wiita, P.J. 1987, Mon. Not. Roy. astr. Soc., 226, 531.Google Scholar
  5. Guilbert, P.W. and Fabian, A.C. 1986, Mon. Not. Roy. astr. Soc., 220, 439 (GF).Google Scholar
  6. Kapahi, V.K. 1985, Mon. Not. Roy. astr. Soc., 214, 19P.Google Scholar
  7. Mitteldorf, J. 1987, Ph. D. thesis, University of Pennsylvania.Google Scholar
  8. Mitteldorf, J. and Wiita, P.J. 1988, these proceedings.Google Scholar
  9. Oort, M.J.A., Katgert, P., Steeman, F.W.H., and Windhorst, R.A. 1987a, Astron. Astrophys., 179, 41.Google Scholar
  10. Oort, M.J.A., Katgert, P. and Windhorst, R.A. 1987b, Nature, 328, 500.Google Scholar
  11. Rosen, A. and Wiita, P.J. 1988, Astrophys. J., in press.Google Scholar
  12. Trinchieri, G., Fabbiano, G., and Canizares C.R. 1986, Astrophys. J., 310, 637.Google Scholar
  13. Wiita, P.J. and Siah, M.J. 1986, Astrophys. J., 300, 605 (WS).Google Scholar

Copyright information

© Springer-Verlag 1988

Authors and Affiliations

  • Alexander Rosen
    • 1
  • Paul J. Wiita
    • 1
  1. 1.Department of Physics and AstronomyGeorgia State UniversityAtlanta

Personalised recommendations