Polarization of Extragalactic Radio Sources at Centimeter Wavelengths PDF Download
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Author: Richard Carl Bignell
Publisher: c1972.
ISBN:
Category : Polarization (Light)
Languages : en
Pages : 186
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Book Description
Author: Richard Carl Bignell
Publisher: c1972.
ISBN:
Category : Polarization (Light)
Languages : en
Pages : 186
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Book Description
Author: G. L. Berge
Publisher:
ISBN:
Category :
Languages : en
Pages : 23
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Book Description
The two-element interferometer at the Owens Valley Radio Observatory was used in late 1967 to measure the integrated polarization, both linear and circular, of 32 extragalactic radio sources at a wavelength of 3.12 cm. In addition, flux densities of 103 radio sources were also measured. (Author).
Author: Daniel R. Altschuler
Publisher:
ISBN:
Category : Polarization (Light)
Languages : en
Pages : 67
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Book Description
Author: David De Young
Publisher: University of Chicago Press
ISBN: 9780226144153
Category : Science
Languages : en
Pages : 588
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Book Description
Extragalactic radio sources are among the most unusual and spectacular objects in the universe, with sizes in excess of millions of light years, radiated energies over ten times those of normal galaxies, and a unique morphology. They reveal some of the most dramatic physical events ever seen and provide essential clues to the basic evolutionary tracks followed by all galaxies and groups of galaxies. In The Physics of Extragalactic Radio Sources, David De Young provides a clearly written overview of what is currently known about these objects. A unique feature of the book is De Young's emphasis on the physical processes associated with extragalactic radio sources: their evolution, their environment, and their use as probes to solve other astrophysical problems. He also makes extensive use of the large amount of data now available from observations at x-ray, optical, and radio wavelengths to illustrate his main points. The Physics of Extragalactic Radio Sources will be a comprehensive introduction to the field for graduate students and a useful summary for astrophysicists.
Author: ROBERT WESLEY HOBBS
Publisher:
ISBN:
Category :
Languages : en
Pages : 261
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Book Description
Author: R.W. Hobbs
Publisher:
ISBN:
Category :
Languages : en
Pages : 248
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Book Description
Author: P. Maltby
Publisher:
ISBN:
Category :
Languages : en
Pages : 8
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Book Description
The degree of linear polarization at a wavelength of about 21 cm is considered for 166 presumably extragalactic radio sources. A connection between degree of linear polarization and galactic latitude is found; low-latitude sources tend to show a lwer degree of polarization than high-latitude sources. It is found that the correlation between degree of polarizatin and galactic latitude is weaker at a wavelength equal to 10 cm than at 21 cm. This result is derived from a sample of 46 sources observed at both wavelengths. Possible interpretations of the correlation found at 21 cm are discussed. (Author).
Author: D.S. Heeschen
Publisher: Springer Science & Business Media
ISBN: 9400977816
Category : Science
Languages : en
Pages : 484
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Book Description
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.
Author: F. F. Gardner
Publisher:
ISBN:
Category :
Languages : en
Pages : 7
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Book Description
The dependence on galactic latitude of the 11 and 20 cm polarization of 355 extragalactic sources reveals no definite evidence of depolarization within the Galaxy. The distribution of Faraday rotation can be explained in terms of a field along the local spiral arm, deformed by magnetic 'loops' in the solar neighbourhood. (Author).
Author: A. G. Pacholczyk
Publisher: Elsevier
ISBN: 1483187977
Category : Science
Languages : en
Pages : 306
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Book Description
Radio Galaxies: Radiation Transfer, Dynamics, Stability and Evolution of a Synchrotron Plasmon deals with the physics of a region in space containing magnetic field and thermal and relativistic particles (a plasmon). The synchrotron emission and absorption of this region are discussed, along with the properties of its spectrum; its linear and circular polarization; transfer of radiation through such a region; its dynamics and expansion; and interaction with external medium. Comprised of eight chapters, this volume explores the stability, turbulence, and acceleration of particles in a synchrotron plasmon as well as its application to the physics of radio galaxies. The discussion begins with a description of extragalactic radio sources and their properties, followed by an analysis of the emission and absorption of synchrotron radiation. Subsequent chapters focus on the transfer of polarized radiation in a magnetoactive plasma; hydromagnetics and hydromagnetic stability; confinement and structure of extended radio sources; and radio-tail galaxies. The book also considers compact radio sources before concluding with an evaluation of radio source theories. This monograph is addressed primarily to radio astronomers and graduate students working on the interpretation of observational data.
