Astrophysical Jets

1. Front Matter

   Pages i-xvi

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2. Small Scale Structure of Nonthermal Radio Sources

   • E. Preuss

   Pages 1-25

3. Arc Second Structure of Compact Radio Sources

   • I. W. A. Browne, M. Charlesworth, T. W. B. Muxlow, A. Tzanetakis, P. N. Wilkinson

   Pages 27-36

4. A Summary of Properties of Radio Jets

   • Edward B. Fomalont

   Pages 37-46

5. Recent Observations of Superluminal Sources

   • Richard W. Porcas

   Pages 47-49

6. The Jet in the Quasar 3C273

   • R. J. Davis

   Pages 51-52

7. Three Archetypal Radio Jets

   • D. J. Saikia, T. J. Cornwell

   Pages 53-56

8. Physical Properties of the Jet in NGC6251

   • A. H. Bridle, R. A. Perley

   Pages 57-66

9. Bent Jets and Tailed Radio Galaxies

   • Jack O. Burns

   Pages 67-79

10. Jet-Like Structures in Low Frequency Variable Sources

    • L. Padrielli, J. D. Romney

    Pages 81-90

11. Curvature in High Redshift Quasars

    • P. D. Barthel

    Pages 91-94

12. Rapid Variability of 3C273 at 300 GHz

    • W. A. Sherwood, E. Kreysa, H.-P. Gemünd, P. Biermann

    Pages 95-96

13. Are There Jets in Spiral Galaxies?

    • C. Kotanyi, E. Hummel, J. van Gorkom

    Pages 97-98

14. Optical Emission from Jets

    • George Miley

    Pages 99-112

15. Astrophysical Jets: Optical Morphologies of Radio Jets and their Parent Galaxies

    • Jean-Luc Nieto

    Pages 113-130

16. PKS 0521-36, A BL Lac Object with an Optical and Radio Jet

    • J. Danziger, R. D. Ekers, R. A. E. Fosbury, W. M. Goss, P. A. Shaver

    Pages 131-133

17. CCD — Observations of Optical Jets and Extensions in Galaxies

    • Hélène Sol

    Pages 135-141

18. The Jet in NGC 3310

    • F. Bertola, N. A. Sharp

    Pages 143-144

19. The Discovery of Optical Emission Knots in the Inner Jet of Centaurus A

    • Jean Brodie, Arieh Königl, Stuart Bowyer

    Pages 145-148

20. Extranuclear Activity in MKN 335

    • K. J. Fricke, W. Kollatschny, H. Schleicher

    Pages 149-155

Attilio Ferrari I want to recall here the basic points I raised at the beginning of the Workshop as the main targets of discussion (in the name of the Scientific Committee). I attempted to focus the attention of participants on the fact that, in many instances, we tend to discuss jets in terms of simple physics, more or less as one did at the time extragalactic radio sources were discovered: for instance, we still use equipartition arguments. However, we must realize that processes in jets, leading to their morphologies and energetics clearly depend on complex plasma phenomena. Therefore, the same standard arguments used to derive characteristic parameters should be questioned; some of the speakers were invited to attempt a critical analysis of this point, an~ in fact I believe that this "inquisitive attitude" was actually present all along the Workshop. Observers were asked to choose the parameters to be used in a statistical sample of jets. For this they were urged, first of all, to distinguish between primary and secondary features. For instance, are knots and wiggles common to all jets? Are relativistic flow velocities expected in all active nuclei? Are jets denser or lighter than the external medium? On the theoretical side I asked to discuss whether or not existing models are in accordance with the limited statistical sample that we have today. And which should be the lines of development to be pursued first, and to what extent.

• Accretion
• CCD
• Redshift
• galaxy
• quasar
• relativistic jet

• University of Torino, Italy

  A. Ferrari

• University of Arizona, Tucson, USA

  A. G. Pacholczyk

Policies and ethics