Clusters Of Galaxies And Extragalactic Radio Sources
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Clusters of Galaxies and Extragalactic Radio Sources
Author: Arkadiĭ Dmitrievich Kuzʹmin
language: en
Publisher: Nova Biomedical Books
Release Date: 1990
In the past few years, the acquisition of new data has far outstripped theoretical advances in the study of clusters of galaxies and extragalactic radio sources two important topics in contemporary astrophysics. A few of the nine papers here try to redress the balance with theoretical treatments, bu
Extragalactic Radio Sources
Author: D.S. Heeschen
language: en
Publisher: Springer Science & Business Media
Release Date: 2012-12-06
IAU Symposium 97, Extragalactic Radio Sources, was held at Albuquerque, New Mexico August 3-7, 1981. It was co-sponsored by IAU Commissions 28, 40, 47 and 48 and by URSI Commission J. Financial and organizational support were provided by the National Radio Astronomy Observatory, the University of New Mexico, and the National Science Foundation. A wide variety of interesting objects and phenomena can be covered under the heading "Extragalactic Radio Sources", and a diverse set of topics was in fact discussed at the symposium. Radio galaxies, quasars, Seyfert galaxies and BL Lacertids received the most attention, but normal galaxies, the galactic center, and even SS433 were also discussed. While the unifying theme of the symposium was radio emission, studies at all wavelengths--X-ray, UV, optical, IR, and radio--were included. In general, the emphasis was on individual objects and the physical processes associated with them, but there were also papers on statistical studies and cosmology. The symposium was attended by 209 scientists from 18 countries.
Extragalactic Radio Sources
Author: R. Ekers
language: en
Publisher: Springer Science & Business Media
Release Date: 2012-12-06
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.