Extragalactic radio sources: proceedings of the 175th Symposium of the International Astronomical Union, held in Bologna, Italy, 10-14 October 1995
Kluwer, 1996 - Science - 631 pages
On 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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Guglielmo Marconi and Radioastronomy Invited
Radio Observations of the 7Ray Blazar 0528+134
Simultaneous multifrequency imaging of the nucleus of NGC 1275
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aligned angle angular Ap.J arcsec Astron Astronomy Astrophys Astrophysics Australia beam Bicknell BL Lac 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 galactic halo high redshift host galaxy images interaction ionization Istituto di Radioastronomia Italy linear Lorentz factor luminosity function magnetic field maps medium MNRAS morphology NRAO nucleus Observatory observed optical parameters particle Physics plasma polarization powerful radio properties QSOs quasars radiation radio emission radio galaxies radio jet radio lobes radio luminosity radio-loud ratio redshift References region relativistic relativistic jets resolution ROSAT sample scale Seyfert Seyfert galaxies shocks spectral index spectrum superluminal survey synchrotron Telescope UHECRs University variability velocity VLBA VLBI wavelengths X-ray Zensus