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Radio Emission from Active Galactic Nuclei

Published online by Cambridge University Press:  04 August 2017

K. I. Kellermann
K. I. Kellermann*
Affiliation:
National Radio Astronomy Observatory, Edgemont Road, Charlottesville, VA 22903, USA

Abstract

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Active Galactic Nuclei and quasars are characterized at radio wavelengths by a high surface brightness, a flat spectrum, variations in intensity on time scales of a few days to a few years, and by large internal motions which probably reflect Doppler beaming from a synchrotron source which is moving with relativistic velocity away from the central energy source and toward the observer. The observations do not support interpretations based on simple ballistic models where the observed motion and core strength depends only on the geometric orientation of a relativistic beam, but appear to require significant dispersion in intrinsic properties as well as complex dynamics.

Type
V. Jets, Superluminal Motions and Blazars
Information
Symposium - International Astronomical Union , Volume 121: Observational Evidences of Activity of Galaxies , 1987 , pp. 273 - 286
Copyright
Copyright © Reidel 1987 

References

Alef, W. et al. 1987, Nature (in press).Google Scholar
Arp, H. C. 1981, in ESO Workshop on Jets in Galaxies, (European Southern Observatory: Munich), p. 53.Google Scholar
Bartel, N. et al. 1982, Astrophys. J. 262, 556.Google Scholar
Bartel, N. et al. 1986, Nature 319, 733.CrossRefGoogle Scholar
Barthel, P. D. et al. 1985, Astr. Ap. 151, 131.Google Scholar
Begelman, M. C. et al. 1984, Rev. Mod. Phys. 56, 255.Google Scholar
Biretta, J. A. et al. 1986, Astrophys. J. 308, 93.Google Scholar
Blandford, R. D. and Konigl, A. 1979, Astrophys. J. 232, 34.Google Scholar
de Bruyn, A. G. et al. 1976, Astr. Ap. 203, L113.Google Scholar
Cohen, M. H. and Unwin, S. C. 1984, in IAU Symposium 110, ed. Fanti, R., et al. (Reidel: Dordrecht), p. 95.Google Scholar
Cohen, M. H. et al. 1971, Astrophys. J. 170, 207.Google Scholar
Dent, W. 1972, Science 175, 1105.Google Scholar
Ekers, R. D. 1978, Physica Scripta 17, 171.Google Scholar
Hoyle, F., Burbidge, G. R. and Sargent, W.L.W. 1966, Nature 209, 751.Google Scholar
Jones, D. L. et al. 1984, Astrophys. J. 276, 480.Google Scholar
Jones, D. L. 1986, Astrophys. J. 309, L5.Google Scholar
Kardashev, N. S. 1964, Astr. Zh. 41, 282; Sov. Astr. 8, 217.Google Scholar
Kellermann, K. I. and Pauliny-Toth, I.I.K. 1968, in Proceedings of IAU Symposium No. 29, (Arm. Acad. Sci.: Erevan, ASSR).Google Scholar
Kellermann, K. I. et al. 1974, Astrophys. J. (Let) 189, L19.CrossRefGoogle Scholar
Kellermann, K. I. et al. 1976, Astroph. J. (Let) 210, L121.Google Scholar
Kellermann, K. I. et al. 1983, in IAU Symposium 110, ed. Fanti, R. et al. (Reidel: Dordrecht), p. 95.Google Scholar
Kellermann, K. I. and Pauliny-Toth, I.I.K. 1981, Ann. Rev. Astron. Astrophs. 19, 373.Google Scholar
Lind, K. R. and Blandford, R. D. 1985, Astrophys. J. 295, 358.CrossRefGoogle Scholar
Lo, K. Y. et al. 1985, Nature 315, 124.Google Scholar
Lo, K. Y. 1986, Pub. Astr. Soc. Pac. 98, 179.Google Scholar
Mutel, R. L. and Phillips, R. B. 1984, in IAU Symposium 110, ed. Fanti, R. et al. (Reidel: Dordrecht), p. 117.Google Scholar
Oor, M.J.L. and Browne, I.W.A. 1982, M.N.R.A.S. 200, 1067.Google Scholar
Ozernoi, L. M. and Sazinov, V. N. 1969, Astr. Sp. Sci. 3, 395.Google Scholar
Pauliny-Toth, I.I.K. 1987, this volume.Google Scholar
Piembert, M. and Torres-Peimbert, S. 1981, Astrophys. J. 245, 845.Google Scholar
Porcas, R. W., 1986, in Active Galactic Nuclei, ed. Dyson, J.E., (Manchester Univ. Press: Manchester) p. 20.Google Scholar
Porcas, R. W. 1981, Nature, 294, 47.Google Scholar
Preuss, E. 1984, in IAU Symposium 110, ed. Fanti, R. et al. (Reidel: Dordrecht), p. 251.Google Scholar
Readhead, A.C.S. et al. 1983, Astrophys. J. 265, 107.Google Scholar
Rees, M. J. 1966, Nature 211, 468.Google Scholar
Rees, M. J. 1971, Nature 229, 312.Google Scholar
Reid, M. et al. 1984, in IAU Symposium 110, ed. Fanti, R. et al. (Reidel: Dordrecht), p. 145.Google Scholar
Romney, J. D. et al. 1984, in IAU Symposium, 110, ed. Fanti, R. et al. (Reidel: Dordrecht) p. 137.Google Scholar
Saika, D. J. 1981, M.N.R.A.S. 197, 1097.Google Scholar
Saika, D. J. 1984, M.N.R.A.S. 208, 231.CrossRefGoogle Scholar
Scheuer, P.A.G. and Readhead, A.C.S. 1979, Nature 277, 182.Google Scholar
Schilizzi, R. T. and deBruyn, A. G. 1983, Nature 303, 26.CrossRefGoogle Scholar
Shklovsky, I. S. 1968, Astron. Zh. 45, 972; Soviet Astron.-AJ 12, 730.Google Scholar
Shklovsky, I. S. 1982, in IAU Symposium 97, ed. Heeschen, D. S. and Wade, C. M. (Reidel: Dordrecht), p. 475.Google Scholar
Sholomitskii, G. B. 1965, Astron. Zh. 42, 673; Soviet Astron.-AJ 9, 516.Google Scholar
Simkin, S. 1977, Astrophys. J. 217, 145.Google Scholar
Strittmatter, P. A. et al. 1980, Astr. and Astroph. 88, L12.Google Scholar
Unwin, S. C. et al. 1985, Astrophys. J. 289, 109.CrossRefGoogle Scholar
Walker, R. C. 1986, Canadian J. Phys. 64, 452.Google Scholar
Whitney, A. et al. 1971, Science 173, 225.Google Scholar
Woltjer, L. 1966, Astrophys. J. 146, 597.Google Scholar
Wrobel, J. M. et al. 1985, Astrophys. J. 289, 598.Google Scholar
Yusef-Sadeh, F., Morris, M., and Chance, D. 1984, Nature 310, 557.Google Scholar
Zensus, A. et al. 1987, Astrophys. J. (in press).Google Scholar