The Linear Polarization of Radio Sources Between 11 and 20 Cm Wavelength. Iii. Influence of the Galaxy on Source Depolarization and Faraday Rotation PDF Download
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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: 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.A. Ruzmaikin
Publisher: Springer Science & Business Media
ISBN: 9400928351
Category : Science
Languages : en
Pages : 322
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Book Description
Magnetism, when extended beyond normal frameworks into cosmic space is characterized by an enormous spatial scale. Because of their large sizes the nature of magnets such as the Earth and the Sun is entirely different from the nature of a horseshoe magnet. The source of cosmic magnetism is associated with the hydrodynamic motions of a highly conductive medium. In this aspect, cosmic magnets resemble a dynamo. However, currents in the dynamo flow along properly ordered wires, while chaotic, turbulent motions are dominant inside stars and liquid planetary cores. This makes more intriguing and surprising the fact that these motions maintain a regular magnetic field. Maintenance of magnetic fields is even more impressive in huge magnets, i.e. galaxies. In fact, we are living inside a giant dynamo machine, the Milky Way galaxy. Although the idea of the global magnetic field of our Galaxy was clearly proposed almost 40 years ago, firm observational evidence and definite theoretical concepts of galactic magnetism have been developed only in the last decade. This book is the first attempt at a full and consistent presentation of this problem. We discuss both theoretical views on the origin of galactic magnetism and the methods of observational study. Previous discussions were on the level of review articles or separate chapters in monographs devoted to cosmic magnetic fields (see, e.g., H. K. Moffatt, 1978, E. N. Parker, 1979 and Zeldovich et aI., 1983).
Author:
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ISBN:
Category : Nuclear energy
Languages : en
Pages : 1994
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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.
Author: Tom Gehrels
Publisher: University of Arizona Press
ISBN: 081653862X
Category : Science
Languages : en
Pages : 1152
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Book Description
“The polarization study of celestial objects is a valuable part of optical astronomy, and the author has done exceptionally well in bringing together contributions treating all aspects of the polarimetry field. . . . The first section contains a fine introduction and an excellent and definitive history of the subject. . . . The volume is well illustrated. . . . Highly recommended.”—Choice “The high quality of this book is clearly due to strict editorial attention to each paper and the discussions. Gehrels’s book will surely stand for many years as the fundamental reference source for polarization studies in astronomy as well as in atmospheric physics.”—Journal of the Association of Lunar and Planetary Observers
Author: Andrew Lyne
Publisher: Cambridge University Press
ISBN: 1108495222
Category : Science
Languages : en
Pages : 421
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Book Description
A comprehensive introduction to pulsars and radio-emitting neutron stars, including observational and theoretical concepts and applications.
Author: Commonwealth Scientific and Industrial Research Organization (Australia)
Publisher:
ISBN:
Category : Research
Languages : en
Pages : 1002
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 642
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Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 920
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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 640
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Book Description
