Hostname: page-component-848d4c4894-nmvwc Total loading time: 0 Render date: 2024-06-17T18:49:12.806Z Has data issue: false hasContentIssue false
  • English
  • Français

The Unification of Quasars and Radio Galaxies

Published online by Cambridge University Press:  25 May 2016

Sperello Di Serego Alighieri
Sperello Di Serego Alighieri*
Affiliation:
Osservatorio Astrofisico di Arcetri Largo E. Fermi, 5 – 50125 Firenze – 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.

The evidence for misdirected quasars in the nuclei of powerful radio galaxies (PRG) is now solid: 1. strong perpendicular polarization of the UV continuum, produced by the scattering of light from the hidden nucleus, has been observed in 10 (out of 11) PRG with z > 0.7 (Cimatti et al. 1993); 2. polarized broad MgII2800 has been seen in 6 PRG (di Serego Alighieri et al. 1994, Antonucci et al. 1994), showing that the hidden nucleus is indeed a quasar. These findings are receiving authoritative confirmation from observations with the Keck telescope (Cimatti, Cohen and van Breugel in these Proceedings). Here I would like to concentrate on recent developments of our understanding of the unification between quasars and PRG.

Type
Unification Issues
Information
Symposium - International Astronomical Union , Volume 175: Extragalactic Radio Sources , 1996 , pp. 389 - 390
Copyright
Copyright © Kluwer 1996 

References

Antonucci, R., Hurt, T. & Kinney, A., 1994, Nature , 371, 313.CrossRefGoogle Scholar
Cimatti, A., di Serego Alighieri, S., Fosbury, R.A.E., Salvati, M. & Taylor, D., 1993, M.N.R.A.S. , 264, 421.CrossRefGoogle Scholar
di Serego Alighieri, S., Cimatti, A. & Fosbury, R.A.E., 1994, ApJ , 431, 123.CrossRefGoogle Scholar
Dickson, R., Tadhunter, C., Shaw, M., Clark, N. & Morganti, R., 1995, M.N.R.A.S. , 273, L29.Google Scholar
Jackson, N. & Browne, I.W.A., 1990, Nature , 342, 43.Google Scholar
Manzini, A. & di Serego Alighieri, S., 1995, A& A , submitted.Google Scholar