Extragalactic Radio Sources: Proceedings of the 175th Symposium of the International Astronomical Union, Held in Bologna, Italy 10–14 October 1995On the 100th anniversary of Marconi's successful experiment on radio broadcasting, 250 astronomers from all over the world met in Bologna (Italy) for five days, to update their knowledge of the physics and statistical properties of powerful extragalactic radio sources. Since their discovery in the fifties enormous progress has been made. The existence of superluminal motions in the cores of radio sources, the presence there of a black hole surrounded by an absorbing dust torus, as inferred mostly from studies at other wavelengths, are now accepted ideas. Nevertheless, in spite of these efforts, there are many questions still unanswered. For instance we do not know which mechanism produces the huge amount of energy supplied to radio sources, how the jets connecting the `engine' to the lobes are formed and collimated, which of the differences observed among the various classes of radio sources are apparent and which are real. These and other related topics are discussed in this book. |
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Contents
Guglielmo Marconi and Radioastronomy Invited | 1 |
The SubParsec Scale Jets of | 11 |
A Dramatic and Invisible flare in NRAO530 | 17 |
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Other editions - View all
Extragalactic Radio Sources: Proceedings of the 175th Symposium of the ... R. Ekers,C. Fanti,L. Padrielli No preview available - 1996 |
Extragalactic Radio Sources: Proceedings of the 175th Symposium of the ... R. Ekers,C. Fanti,L. Padrielli No preview available - 1996 |
Common terms and phrases
aligned angle Ap.J arcsec Astron Astronomy Astrophys Astrophysics beam Bicknell BL Lac objects BL Lacertae objects blazars Bologna brightness cluster compact component continuum core correlation depolarization detected disk distribution EGRET Ekers electrons emission line energy evolution Extragalactic Radio Sources Fanti Figure flat-spectrum flux density frequency FRII Gabuzda galactic halo high redshift images interaction ionization Istituto di Radioastronomia Italy Lorentz factor luminosity function magnetic field maps MNRAS morphology NRAO nucleus Observatory optical parameters peak Physics polarization powerful radio properties QSOs quasars radiation radio emission radio galaxies radio jet radio lobes radio luminosity radio-loud ratio Readhead redshift region relativistic relativistic jets resolution ROSAT sample scale Seyfert Seyfert galaxies shocks spectral index spectrum superluminal superluminal motion survey synchrotron Telescope University variability velocity VLBA VLBI wavelengths X-ray y-ray Zensus