Vlbi And Compact Radio Sources
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Vlbi And Compact Radio Sources
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Author : Roberto Fanti
language : en
Publisher: Springer Science & Business Media
Release Date : 1984-05-31
Vlbi And Compact Radio Sources written by Roberto Fanti and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984-05-31 with Science categories.
I.A.U. symposium No. 110 on VLBI and Compact Radio Sources was held in Bologna, Italy from June 27 to July 1, 1983. 166 participants from 19 countries were registered and 106 invited and contributed papers were registered. The scientific presentations and discussion concentrated on VLBI observation and interpretation of galactic and extragalactic radio sour ces, including topics as diverse as quasars and galactic nuclei, inter stellar masers, pulsars, and astrometry. Geodetic applications and tech nical development were treated only briefly, as these topics have been the subject of other recent international symposia. Since the first VLBI observations in 1967, sensitivity, resolution, and image quality have improved dramatically. Radio maps shown at the symposium were of comparable quality to conventional synthesis maps be ing made at the time of the first VLBI experiments 15 years ago, but with a resolution more than a factor of 1000 better. We wanted to accommodate the large number of contributed papers in this rapidly developing field, but there was inadequate time for normal oral presentations and discussion. We therefore asked that all contrib uted papers be put on display for at least 24 hours prior to a brief oral summary. A question and discussion period followed groups of oral pres entations on the same or similar topic. In this way the opportunity for interactive discussion, not available in conventional poster displays, was preserved.
Vlbi And Compact Radio Sources
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Author : Roberto Fanti
language : en
Publisher: Springer
Release Date : 1984-06-14
Vlbi And Compact Radio Sources written by Roberto Fanti and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984-06-14 with Science categories.
I.A.U. symposium No. 110 on VLBI and Compact Radio Sources was held in Bologna, Italy from June 27 to July 1, 1983. 166 participants from 19 countries were registered and 106 invited and contributed papers were registered. The scientific presentations and discussion concentrated on VLBI observation and interpretation of galactic and extragalactic radio sour ces, including topics as diverse as quasars and galactic nuclei, inter stellar masers, pulsars, and astrometry. Geodetic applications and tech nical development were treated only briefly, as these topics have been the subject of other recent international symposia. Since the first VLBI observations in 1967, sensitivity, resolution, and image quality have improved dramatically. Radio maps shown at the symposium were of comparable quality to conventional synthesis maps be ing made at the time of the first VLBI experiments 15 years ago, but with a resolution more than a factor of 1000 better. We wanted to accommodate the large number of contributed papers in this rapidly developing field, but there was inadequate time for normal oral presentations and discussion. We therefore asked that all contrib uted papers be put on display for at least 24 hours prior to a brief oral summary. A question and discussion period followed groups of oral pres entations on the same or similar topic. In this way the opportunity for interactive discussion, not available in conventional poster displays, was preserved.
Vlbi And Compact Radio Sources
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Author : Roberto Fanti
language : en
Publisher:
Release Date : 1984
Vlbi And Compact Radio Sources written by Roberto Fanti and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with categories.
Vlbi And Compact Radio Sources
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Author : Roberto Fanti
language : en
Publisher:
Release Date : 1984
Vlbi And Compact Radio Sources written by Roberto Fanti and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Radio sources (Astronomy) categories.
Parsec Scale Radio Jets
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Author : J. Anton Zensus
language : en
Publisher: Cambridge University Press
Release Date : 1990-08-16
Parsec Scale Radio Jets written by J. Anton Zensus and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990-08-16 with Crafts & Hobbies categories.
Quasars and active galaxies are the most powerful emitters of radiation in the universe. Modern radio telescope arrays have shown that the ultimate energy source resides in the central few parsecs of the galactic nucleus, and powers the emitting regions by way of two oppositely-directed relativistic jets of energy. This volume presents the latest observations and theories of these remarkable objects. Topics discussed include superluminal motions, the physics of jets and shock fronts in jets, related optical observations, and cosmic evolution. Particular attention is given to the "unified theories," which attempt to show that many of the phenomena in powerful extragalactic objects are different aspects of a single, basic mechanism; the main difference in their appearance is a result of their different orientation with respect to the observer.
Radio Emission From Galactic And Extragalactic Compact Sources
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Author : J. Anton Zensus
language : en
Publisher:
Release Date : 1998
Radio Emission From Galactic And Extragalactic Compact Sources written by J. Anton Zensus and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Nature categories.
Very Long Baseline Interferometry
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Author : Marcello Felli
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Very Long Baseline Interferometry written by Marcello Felli and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
The quest for high resolution has preoccupied radio astronomers ever since radio waves were first detected from space fifty years ago. This venture was par ticularly stimulated by the discovery of quasars, and led to the development of interferometer techniques using baselines of transglobal dimensions. These meth ods have become known as Very Long Baseline Interferometry (VLBI). Arrays of radio telescopes situated all over the Earth (or even in space) are regularly used for researches in radio astronomy, reaching resolutions as small as a fraction of a milli arcsecond. The technique also allows the measurement of the positions of the radio telescopes to a few millimeters and so VLBI has become a major tool in geodesy and the study of the rotation of the Earth. VLBI has now passed the pioneer stage and is becoming a standard facility available to astronomers and geodesists, requiring the coordination of the operations of indpendently owned radio telescopes around the world. In Europe observatories from England, Federal Republic of Germany, France, Italy, Poland, Sweden and The Netherlands are coordinated in their VLBI activity by the European VLBI Network Consortium (EVN). The Programme Committee of the EVN allocates time to scientific projects on a routine basis three times a year. The Unites States has a similar arrangement of a network of independent radio observatories, and joint experiments using 'Global Network' are often made.
Extragalactic Radio Sources
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Author : Jacques Roland
language : en
Publisher: Cambridge University Press
Release Date : 1992-06-26
Extragalactic Radio Sources written by Jacques Roland and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992-06-26 with Nature categories.
The physics of active galactic nuclei, the origin of extragalactic jets and the formation of extended extragalactic radio sources are among the most interesting challenges of modern astrophysics. This book contains the proceedings of the 7th meeting of the Institut d'Astrophysique de Paris, which drew together both theorists and observers in this exciting field. Recent observational data at X-ray, optical and radio wavelengths is discussed, and new theoretical developments concerning beam and jet formation models are considered. Special treatment is given to plasma physics problems related to particle acceleration, magnetic reconnection, beam-plasma interaction and coherent emission. The volume will be of use to all students and researchers who are working in this field.
Open Skies
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Author : Kenneth I. Kellermann
language : en
Publisher: Springer Nature
Release Date : 2020-01-01
Open Skies written by Kenneth I. Kellermann and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-01-01 with Astronomy categories.
This open access book on the history of the National Radio Astronomy Observatory covers the scientific discoveries and technical innovations of late 20th century radio astronomy with particular attention to the people and institutions involved. The authors have made extensive use of the NRAO Archives, which contain an unparalleled collection of documents pertaining to the history of radio astronomy, including the institutional records of NRAO as well as the personal papers of many of the pioneers of U.S. radio astronomy. Technical details and extensive citations to original sources are given in notes for the more technical readers, but are not required for an understanding of the body of the book. This book is intended for an audience ranging from interested lay readers to professional researchers studying the scientific, technical, political, and cultural development of a new science, and how it changed the course of 20th century astronomy.
Radio Astronomy At The Fringe
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Author : J. Anton Zensus
language : en
Publisher:
Release Date : 2003
Radio Astronomy At The Fringe written by J. Anton Zensus and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Nature categories.