[PDF] Radiation In Astrophysical Plasmas eBook

Author : V.V. Zheleznyakov
Publisher : Springer Science & Business Media
Page : 470 pages
File Size : 15,86 MB
Release : 2012-12-06
Category : Science
ISBN : 9400902018

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Interest in the problem of interaction between radiation and astrophysical plasmas arose decades ago. Initially, this was closely related to the discovery of radio emission from the Sun and Galaxy which alerted theoretical radio astronomers to the problem of the origin of extra-terrestrial radio emission. It has been found that the observed radio emission from cosmic sources is generated by virtue of the mechanisms which work mainly in plasma (an ionized gas). Recently, the theory of generation and propagation of radiation in astrophysical plasmas has outgrown its parent domain of theoretical radio astronomy and is being successfully applied to other fields, such as high-energy astrophysics. General results obtained in this field may also help to better understand the complicated phenomena in laboratory plasmas on the Earth. At the same time, analysis of interaction between radiation and astrophysical plasmas under extreme conditions (strong magnetic fields of white dwarfs and neutron stars or strong gravitational fields in the vicinity of black holes) stimulates the development of plasma physics as a whole. In fact, the physics of plasma under extreme conditions in space is a new branch of fundamental science. The monograph contains the description of physical processes involved in interaction between radiation and astrophysical plasmas. It comprises the reasonable minimum necessary for understanding the emission and propagation of electromagnetic waves in astrophysical plasmas; without this minimum one could not succeed in interpreting the results of a number of astronomical observations. Audience: This monograph will be useful for graduate and post-graduate students and young scientists as a textbook on plasma astrophysics and the issues of plasma physics dealing with radiation. At the same time, the book can be used by specialists on astrophysics, radio astronomy and plasma physics.

Author : Samuil Aronovich Kaplan
Publisher :
Page : 74 pages
File Size : 32,94 MB
Release : 1969
Category : Magnetic fields
ISBN :

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The paper discusses problems and applications of plasma physics and its revelance to astrophysics. A method of interpreting radio emission of variable quasars is suggested.

Author : Eric H. Silver
Publisher : Cambridge University Press
Page : 636 pages
File Size : 44,89 MB
Release : 2004-01-29
Category : Science
ISBN : 9780521548168

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Up-to-date accounts of recent and future advances in short-wavelength spectroscopy of laboratory and cosmic plasmas.

Author : André Balogh
Publisher : Springer Science & Business Media
Page : 631 pages
File Size : 36,71 MB
Release : 2014-01-15
Category : Science
ISBN : 148997413X

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Presents a comprehensive review of physical processes in astrophysical plasmas. This title presents a review of the detailed aspects of the physical processes that underlie the observed properties, structures and dynamics of cosmic plasmas. An assessment of the status of understanding of microscale processes in all astrophysical collisionless plasmas is provided. The topics discussed include turbulence in astrophysical and solar system plasmas as a phenomenological description of their dynamic properties on all scales; observational, theoretical and modelling aspects of collisionless magnetic reconnection; the formation and dynamics of shock waves; and a review and assessment of microprocesses, such as the hierarchy of plasma instabilities, non-local and non-diffusive transport processes and ionisation and radiation processes. In addition, some of the lessons that have been learned from the extensive existing knowledge of laboratory plasmas as applied to astrophysical problems are also covered. This volume is aimed at graduate students and researchers active in the areas of cosmic plasmas and space science. Originally published in Space Science Reviews journal, Vol. 278/2-4, 2013.

Author : Yuri Ralchenko
Publisher : Springer
Page : 220 pages
File Size : 31,27 MB
Release : 2016-02-25
Category : Science
ISBN : 3319275143

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This book provides a compact yet comprehensive overview of recent developments in collisional-radiative (CR) modeling of laboratory and astrophysical plasmas. It describes advances across the entire field, from basic considerations of model completeness to validation and verification of CR models to calculation of plasma kinetic characteristics and spectra in diverse plasmas. Various approaches to CR modeling are presented, together with numerous examples of applications. A number of important topics, such as atomic models for CR modeling, atomic data and its availability and quality, radiation transport, non-Maxwellian effects on plasma emission, ionization potential lowering, and verification and validation of CR models, are thoroughly addressed. Strong emphasis is placed on the most recent developments in the field, such as XFEL spectroscopy. Written by leading international research scientists from a number of key laboratories, the book offers a timely summary of the most recent progress in this area. It will be a useful and practical guide for students and experienced researchers working in plasma spectroscopy, spectra simulations, and related fields.

Author : Evgeniæi Aleksandrovich Oks
Publisher :
Page : 0 pages
File Size : 41,83 MB
Release : 2023
Category : SCIENCE
ISBN : 9780750355520

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Nonlinearity is omnipresent in nature and in laboratory experiments. The nonlinear phenomena in the radiation from plasmas are fundamentally important because of the rich physics behind these phenomena. They are also practically important because the most informative way to study laboratory and astrophysical plasmas is by analysing their radiation. These nonlinear phenomena constitute the subject of this comprehensive book. First, the book covers various nonlinear phenomena occurring in plasmas containing quasimonochromic electric fields. Second, the book covers nonlinear phenomena manifesting in the Stark broadening of spectral lines by dynamic plasma electrons or ions. Many theoretical results presented in the book are counterintuitive, and are illustrated by numerous two-dimensional and three-dimensional plots. The book also describes various applications of the theoretical results for areas of diagnostics for laboratory and astrophysical plasmas.

Author : VINOD Balakrishnan
Publisher : Springer Science & Business Media
Page : 366 pages
File Size : 35,11 MB
Release : 2012-12-06
Category : Science
ISBN : 9401147205

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Life was simple when the dynamic, the spectral and the resolving powers of our instruments were small. One observed whole objects - planets, stars, sunspots, galaxies, often in rainbow colours. Then the revolution occurred: we acquired the centimetric eyes, the mil limetric eyes, the infrared eyes, the ultraviolet eyes, the X-ray eyes and the ,-ray eyes. With these we see mottles on the surface of stars, streams in sunspots, and spirals in nuclei of galaxies. We see regions of multiple mass densities and temperatures in a precari ous balance, losing it occasionally, exhaling flares. The universe is timed, cosmic phenomena are clocked; eternity is lost and variabil ity is bought. Microarcsecond resolutions revealed stirring and siz zling interiors underneath serene surfaces. Short durations and small scales demanded employing a discipline with similar attributes - the discipline of Plasmas and Fluids - known more for its complexity than for its felicity. Some would like to wish it away. We shall learn about plasmas for it is too little familiarity that breeds fear. Complexity can be systemized, to a large extent, by looking for a common denominator among apparently disparate phe nomena. It is not immediately obvious what the contents and the style of a graduate level course on plasmas and fluids aimed at understanding astrophysical phenomena should be. Plasmas and fluids are huge subjects by themselves. The cosmic phenomena where plasmas and fluids playa definite role are equally diverse and numerous.