Very Long Baseline Interferometry And The Vlba
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Very Long Baseline Interferometry And The Vlba
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Author : J. Anton Zensus
language : en
Publisher:
Release Date : 1995
Very Long Baseline Interferometry And The Vlba 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 1995 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.
Very Long Baseline Interferometry And The Vlba
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Author : J A. Zensus
language : en
Publisher:
Release Date : 1995
Very Long Baseline Interferometry And The Vlba written by J A. Zensus and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.
Very Long Baseline Interferometry And The Vlba
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Author : P. J. Diamond
language : en
Publisher:
Release Date : 1992
Very Long Baseline Interferometry And The Vlba written by P. J. Diamond and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with categories.
Very Long Baseline Interferometry Of Evolved Binary Systems
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Author : William M. Peterson
language : en
Publisher:
Release Date : 2011
Very Long Baseline Interferometry Of Evolved Binary Systems written by William M. Peterson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Double stars categories.
Our understanding of the magnetic fields of stars is nearly monopolized by knowledge of our own sun. Very-long baseline radio interferometry (VLBI) provides a means of directly imaging the radio coronae of other stars at a high enough resolution to discern discrete features, something not possible with other observational methods. It also allows the highest positional accuracy of any observational method available. This thesis details the VLBI study of two nearby radio-loud stars in close binary systems. Both systems were observed at numerous epochs spaced over a range of several months with the global-scale radio interferometer array the VLBA-HSA. These observations were combined with archival data from the National Radioastronomy Observatory (NRAO) Archive. The resulting positions, as well as previously published positions, were used to calculate a least-squares solution for all the orbital and astrometric parameters of both systems. This made it possible to determine the position of the physical star with respect to the radio emission in each image. The images of both stars were found to conform to theoretical emission produced by a model dipolar magnetosphere with a filled or partially-filled coronal loop.
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.
The Role Of Vlbi In Astrophysics Astrometry And Geodesy
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Author : Franco Mantovani
language : en
Publisher: Springer Science & Business Media
Release Date : 2005-12-31
The Role Of Vlbi In Astrophysics Astrometry And Geodesy written by Franco Mantovani 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 2005-12-31 with Science categories.
A masterly survey of the last 13 years of Very Long Baseline Interferometry, reviewed in light of the most advanced astronomical observations. Topics covered include: Nonthermal emission from extragalactic radio sources; Principles of synchrotron emission in relation to astrophysics; Theory of relativistic jets; Young, powerful radio sources and their evolution; Scintillation in extragalactic radio sources; Radio and optical interferometry; Radio polarimetry; Unified schemes; Deep fields; Tropospheric and ionospheric phase calibration; Supernovae; VLBI for geodesy and geodynamics.
Radio Interferometry
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Author : T. J. Cornwell
language : en
Publisher:
Release Date : 1991
Radio Interferometry written by T. J. Cornwell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Science categories.
Interferometry And Synthesis In Radio Astronomy
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Author : A. Richard Thompson
language : en
Publisher: Wiley-Interscience
Release Date : 1986-04-28
Interferometry And Synthesis In Radio Astronomy written by A. Richard Thompson and has been published by Wiley-Interscience this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986-04-28 with Nature categories.
A unified description of the theory and practice of radio interferometry and synthesis mapping techniques as they apply to astronomy and geology. Beginning with an historical review, it goes on to provide a detailed description of all aspects of radio inferometry, from basic principles through instrumental design to data reduction. Over 450 original papers and monographs are cited.
Very Long Baseline Interferometer
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Author : Fujinobu Takahashi
language : en
Publisher: IOS Press
Release Date : 2000
Very Long Baseline Interferometer written by Fujinobu Takahashi and has been published by IOS Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Radio interferometers categories.
VLBI is an acronym for Very Long Baseline Inferometry, and can be roughly divided into two areas of application. The first area is in geodesy, which is covered in considerable detail in this book. The second area is in astrometry, or radio astronomy, which is only briefly treated in the book.