Hostname: page-component-745bb68f8f-5r2nc Total loading time: 0 Render date: 2025-01-13T00:47:57.825Z Has data issue: false hasContentIssue false
  • English
  • Français

Can all Quasars be Gravitationally Lensed SY's Nuclei?

Published online by Cambridge University Press:  04 August 2017

G. Setti  and
G. Zamorani
G. Setti
Affiliation:
European Southern Observatory, Garching bei München, FRG
G. Zamorani
Affiliation:
Istituto di Radioastronomia CNR, Bologna, Italy

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

There has been a good deal of discussion in recent literature about the hypothesis, first put forward by Barnothy and Barnothy (1968), that quasars could be gravitationally lensed nuclei of Seyfert's galaxies (Turner, 1980; Tyson, 1981). Large amplifications (> 3–4 magnitudes) are needed to account for the widespread distribution in the intrinsic optical luminosities of quasars. A direct verification of this hypothesis is difficult to achieve due to the limited angular resolution of ground based telescopes. However, this hypothesis may be tested in a global sense by referring to radiation properties of Sy 1 nuclei which must be preserved, or must change in any predictable way, through the lensing process.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 104: Early Evolution of the Universe and Its Present Structure , 1983 , pp. 379 - 380
Copyright
Copyright © Reidel 1983 

References

Barnothy, J. and Barnothy, M.F. 1968, Science, 162, 348.CrossRefGoogle Scholar
Canizares, C.R. 1982, Ap. J., in press.Google Scholar
Peacock, J.A. 1982, M.N.R.A.S., 199, 987.CrossRefGoogle Scholar
Turner, E.L. 1980, Ap. J. (Letters), 242, L139.CrossRefGoogle Scholar
Tyson, J.A. 1981, Ap. J. (Letters), 248, L89.Google Scholar
Zamorani, G. 1982, Ap. J. (Letters), in press.Google Scholar