On the Existence of a New Polarization-effect in Stellar Spectral-lines PDF Download

Author: Teresita Tamburini
Publisher:
ISBN:
Category :
Languages : en
Pages : 5

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Author: M. Landi Degl'Innocenti
Publisher: Springer Science & Business Media
ISBN: 1402024150
Category : Science
Languages : en
Pages : 899

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Book Description
The scientific research based on spectropolarimetric techniques is undergoing a phase of rapid growth. Instruments of unprecedented sensitivity are nowadays available, particularly for solar observations. To fully exploit the rich diagnostic content of such observations, it is necessary to understand the physical mechanisms involved in the generation and transfer of polarized radiation in astrophysical (or laboratory) plasmas. After an introductory part based on classical physics, this book tackles the subject by a rigorous quantum-mechanical approach. The transfer equations for polarized radiation and the statistical equilibrium equations for the atomic density matrix are derived directly from the principles of Quantum Electrodynamics. The two sets of equations are then used to present a number of applications, mainly concerning the diagnostics of solar magnetic fields. This book is primarily addressed to scientists working in the field of spectropolarimetry. It may also serve as a textbook for a course at the graduate or advanced undergraduate level.

Author: David Clarke
Publisher: John Wiley & Sons
ISBN: 3527628339
Category : Science
Languages : en
Pages : 431

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Book Description
Written by an experienced teacher and author, this must-have source for work with polarimetric equipment and polarimetry in astronomy conveys the knowledge of the technology and techniques needed to measure and interpret polarizations. As such, this monograph offers a brief introduction and refresher, while also covering in detail statistics and data treatment as well as telescope optics. For astronomers, physicists and those working in the optical industry.

Author: Tom Gehrels
Publisher: University of Arizona Press
ISBN: 9780816504282
Category : Science
Languages : en
Pages : 1160

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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 to gether 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."ÑChoice "The high quality of this book is clearly due to strict editorial attention to each paper and the discussions. Gehrel's book will surely stand for many years as the fundamental reference source for polarization studies in astronomy as well as in atmospheric physics."ÑJournal of the Assoc. of Lunar and Planetary Observers

Author: K.N. Nagendra
Publisher: Springer Science & Business Media
ISBN: 9401593299
Category : Science
Languages : en
Pages : 553

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Book Description
Novel instruments for high-precision imaging polarimetry have opened new possibilities, including for exploring effects in radiative scattering, atomic physics, spectral line formation, and radiative transfer. This volume gives a comprehensive and up-to-date account of this rapidly evolving and interdisciplinary field of science.

Author: Svetlana V. Berdyugina
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 608

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Book Description
"The 5th Solar Polarization Workshop (SPW5) continues the series of workshops on 'solar polarization' and related topics"--p. xv.

Author:
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 2344

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Author: International Astronomical Union
Publisher:
ISBN:
Category : Astronomy
Languages : en
Pages : 836

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Author: J.E. Beckman
Publisher: Springer Science & Business Media
ISBN: 9400953720
Category : Science
Languages : en
Pages : 452

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Book Description
Spectral line formation theory is at the heart of astrophysical diagnostic. Our knowledge of abundances, in both stellar and interstellar contexts, comes almost enti rely from line analysis, as does a major fraction of our ability to model stellar atmospheres. As new facets of the universe become observable so the techniques of high reso lution spectroscopy are brought to bear, with great reward. Improved instruments, such as echelle spectrographs, employ ing detectors of high quantum efficiency, have revolutioned our ability to observe high quality line profiles, although until now this ability has been confined to the brightest stars. Fabry-Perot interferometers and their modern deriva tives are bringing new ranges of resolving power to studies of atomic and ionic interstellar lines, and of course radio techniques imply exceedingly high resolution for the cool interstellar medium of molecules and radicals. Telescopes in space are extending the spectral range of these types of observations. Already the Copernicus and IUE high resolution spectrographs have given us a tantalizing glimmer of what it will be like to obtain ultraviolet spectra with resolution and signal to noise ratio approaching those obtainable on the ground. Fairly soon Space Telescope will be producing high resolution spectroscopic data of unparal leled quali ty and distance range. As often happens in astro physics the challenge is now coming from the observers to the theorists to provide interpretational tools which are adequate to the state of the data.

Author: John T. Jefferies
Publisher:
ISBN:
Category : Astronomical spectroscopy
Languages : en
Pages : 328

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Book Description
The purpose of this book is to discuss certain aspects of the theory of the formation and analysis of the line spectrum of a hot gas. The underlying motivation for most of the studies discussed here lies in a desire to develop a physically sound procedure for interpreting the line spectrum of a stellar atmosphere ; correspondingly, the major emphasis is given to problems encountered in astrophysics.