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3C454.3: A New Kind of Superluminal Source?

Published online by Cambridge University Press:  04 August 2017

I.I.K. Pauliny-Toth
I.I.K. Pauliny-Toth*
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-5300 Bonn 1, F.R.G.

Abstract

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The quasar 3C454.3 has a “core-jet” structure, on scales ranging from 50 kpc to 100 pc. VLBI observations made during the last 5 years show that the structural variations within the core region are very different from those seen in the “classical” superluminal sources. After a period of very rapid expansion (apparent velocity va ≥ 30c), the brightest features in the core region showed little relative motion (va < 3c), although at least one weak, more distant component appears to have separated from the others with va ~ 19c. The most likely interpretation of the stationary features involves stationary shocks excited by a relativistic flow.

Type
V. Jets, Superluminal Motions and Blazars
Information
Symposium - International Astronomical Union , Volume 121: Observational Evidences of Activity of Galaxies , 1987 , pp. 295 - 300
Copyright
Copyright © Reidel 1987 

References

Alef, A., Porcas, R.W.: 1986, Astron. Astrophys. (in press) Google Scholar
Bååth, L.B. et al.; 1980, Astron. Astrophys. 86, 364 Google Scholar
Clark, B.G.: 1973, Proc. IEEE 61, 1242 Google Scholar
Cohen, M.H. et al.: 1975, Astrophys. J. 201, 249 CrossRefGoogle Scholar
Cohen, M.H., Unwin, S.C.: 1984, IAU Symp. 110, publ. D. Reidel, 95 Google Scholar
Fanti, R., Ficarra, A., Mantovani, F., Padrielli, L., Weiler, K.: 1979, Astron. Astrophys. Suppl. 36, 359 Google Scholar
Götz, M., Alef, W., Preuss, E., Kellermann, K.I.: 1986, Astron. Astrophys. (submitted) Google Scholar
Hunstead, R.W.: 1972, Astrophys. Lett. 12, 193 Google Scholar
Jones, T.W., Burbidge, G.R.: 1973, Astrophys. J. 186, 791 Google Scholar
Kellermann, K.I., Pauliny-Toth, I.I.K.: 1967, Nature 213, 977 Google Scholar
Kellermann, K.I., Pauliny-Toth, I.I.K.: 1969, Astrophys. J. Lett. 155, L71 CrossRefGoogle Scholar
Lind, K.R., Blandford, R.D.: 1985, Astrophys. J. 295, 358 Google Scholar
Marcaide, J.M. et al.: 1985, Nature 314, 424 Google Scholar
Orr, M.J.L., Browne, I.W.A.: 1982, Monthly Notices Roy. Astron. Soc. 200, 1067 CrossRefGoogle Scholar
Padrielli, L.: 1984, IAU Symp. 110, publ. D. Reidel, 169 Google Scholar
Pearson, T.J., Readhead, A.C.S.: 1984, Ann. Rev. Astron. Astrophys. 22, 97 Google Scholar
Rickett, B.J., Coles, W.A., Bourgois, G.: 1984, Astron. Astrophys. 134, 390 Google Scholar
Shaffer, D.B. et al.: 1977, Astrophys. J. 218, 353 Google Scholar
Shaffer, D.B., Marscher, A.P.: 1985, Bull. Am. Astron. Soc. 17, 608 Google Scholar