Virtual Astrophysical Jets

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Publisher : Springer Science & Business Media
ISBN 13 : 1402026641
Total Pages : 269 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Virtual Astrophysical Jets by : Silvano Massaglia

Download or read book Virtual Astrophysical Jets written by Silvano Massaglia and published by Springer Science & Business Media. This book was released on 2013-06-05 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings are the result of a three-day meeting held in Oogliani (Italy), on October 2-4 2003, whose title was "VIrtual Astrophysical Jets 2003". Our goal in convening this meeting was to gather some of the scientists among the most active in the field of numerical simulations and modelling of astrophysi cal jets. For keeping the participants close to the "real world", we also invited a few observers to give up-to-date reviews outlining the state-of-the-art of jet observations. The principal aim of the meeting was thus to present and critically discuss the state-of-the-art numerical simulations, analytical models and laboratory ex periments for reproducing the main aspects of astrophysical jets and compar ing them with observations. The discussion has been focused on the following topics: • Observations and intepretions of jets from young stars and AGNs, comparisons of models with observations; • MHO accelerations of jets: steady self-similar models, MHO numerical simula tions of time-dependent accelerations mechanisms; • Jet stability and interaction with the ambient: formation of knots in YSO jets, jet survival to instabilities, deceleration of relativistic jets in FRI sources, simulations of jets-IGM interactions, jets propagation and galaxy formation; • Numerical codes and their validation: relativistic MHO codes, comparisons among different numerical schemes, jets in the laboratory and code validation. These topics have been discussed intensively during the meeting, and the out come of these discussions is presented in this volume. The contributions have been divided in five sections.

Astrophysical Jets

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Publisher : Cambridge University Press
ISBN 13 : 9780521442213
Total Pages : 332 pages
Book Rating : 4.4/5 (422 download)

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Book Synopsis Astrophysical Jets by : D. Burgarella

Download or read book Astrophysical Jets written by D. Burgarella and published by Cambridge University Press. This book was released on 1993-11-11 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of edited review articles presented at a workshop at the Space Telescope Science Institute which gathered astrophysicists from the fields of extragalactic and galactic/stellar jets.

Astrophysical Jets

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Publisher : Taylor & Francis
ISBN 13 : 9789056996376
Total Pages : 292 pages
Book Rating : 4.9/5 (963 download)

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Book Synopsis Astrophysical Jets by : Silvano Massaglia

Download or read book Astrophysical Jets written by Silvano Massaglia and published by Taylor & Francis. This book was released on 1998 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: First Published in 2004. Routledge is an imprint of Taylor & Francis, an informa company.

Astrophysical Jets

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Publisher : Springer Science & Business Media
ISBN 13 : 9400971869
Total Pages : 330 pages
Book Rating : 4.4/5 (9 download)

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Book Synopsis Astrophysical Jets by : A. Ferrari

Download or read book Astrophysical Jets written by A. Ferrari and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Attilio Ferrari I want to recall here the basic points I raised at the beginning of the Workshop as the main targets of discussion (in the name of the Scientific Committee). I attempted to focus the attention of participants on the fact that, in many instances, we tend to discuss jets in terms of simple physics, more or less as one did at the time extragalactic radio sources were discovered: for instance, we still use equipartition arguments. However, we must realize that processes in jets, leading to their morphologies and energetics clearly depend on complex plasma phenomena. Therefore, the same standard arguments used to derive characteristic parameters should be questioned; some of the speakers were invited to attempt a critical analysis of this point, an~ in fact I believe that this "inquisitive attitude" was actually present all along the Workshop. Observers were asked to choose the parameters to be used in a statistical sample of jets. For this they were urged, first of all, to distinguish between primary and secondary features. For instance, are knots and wiggles common to all jets? Are relativistic flow velocities expected in all active nuclei? Are jets denser or lighter than the external medium? On the theoretical side I asked to discuss whether or not existing models are in accordance with the limited statistical sample that we have today. And which should be the lines of development to be pursued first, and to what extent.

Astrophysical Jets and Beams

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Publisher : Cambridge University Press
ISBN 13 : 0521834767
Total Pages : 241 pages
Book Rating : 4.5/5 (218 download)

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Book Synopsis Astrophysical Jets and Beams by : Michael D. Smith

Download or read book Astrophysical Jets and Beams written by Michael D. Smith and published by Cambridge University Press. This book was released on 2012-02-16 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: An up-to-date study of astrophysical jets that will appeal to students and researchers in all areas of astrophysics.

Magnetic Helicity, Spheromaks, Solar Corona Loops, And Astrophysical Jets

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Publisher : World Scientific
ISBN 13 : 1786345161
Total Pages : 652 pages
Book Rating : 4.7/5 (863 download)

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Book Synopsis Magnetic Helicity, Spheromaks, Solar Corona Loops, And Astrophysical Jets by : Bellan Paul M

Download or read book Magnetic Helicity, Spheromaks, Solar Corona Loops, And Astrophysical Jets written by Bellan Paul M and published by World Scientific. This book was released on 2018-03-09 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pedagogical in style, this book provides insights into plasma behavior valid over twenty orders of magnitude in both time and space. The book assumes that the reader has a basic knowledge of magnetohydrodynamics and explains topics using detailed theoretical analysis supported by discussion of relevant experiments. This comprehensive approach gives the reader an understanding of the essential theoretical ideas and their application to real situations. The book starts by explaining the topological concept of magnetic helicity and then develops a helicity-based model that predicts the ultimate state towards which magnetically-dominated plasmas evolve. The model predicts that no matter how messy or complicated the dynamics, a great range of plasma configurations always self-organize to a unique, simple final state. This self-organization, called relaxation, is a fundamental concept that unifies understanding of spheromaks, solar corona loops, interplanetary magnetic clouds, and astrophysical jets. After establishing why relaxation occurs, the book then examines how relaxation occurs. It shows that relaxation involves a sequence of complex non-equilibrium dynamics including fast self-collimated plasma jets, kink instabilities, magnetic reconnection, and phenomena outside the realm of magnetohydrodynamics. Contents: IntroductionBasic ConceptsMagnetic HelicityRelaxation of an Isolated Configuration to the Taylor StateRelaxation in Driven ConfigurationsThe MHD Energy Principle, Helicity, and Taylor StatesSurvey of Spheromak Formation SchemesClassification of Regimes: An Imperfect Analogy to ThermodynamicsAnalysis of Isolated Cylindrical SpheromaksThe Role of the WallAnalysis of Driven Spheromaks: Strong CouplingHelicity Flow and DynamosConfinement and Transport in SpheromaksSome Important Practical IssuesBasic Diagnostics for SpheromaksApplications of SpheromaksInitial Dynamics Leading to Relaxation: MHD JetsDynamics Associated with Relaxation: Kinks, Rayleigh-Taylor, Hard X-RaysBeyond MHD: Whistler Waves and Fast Magnetic ReconnectionZero-β Models for Solar and Space Phenomena: Helicity, Force-Free EquilibriaFinite-β Models and Experiments for Solar Phenomena: Collimation, Flows, ExpansionBeyond MHD: Extreme Particle Orbits in Helical Magnetic FieldsFinite-β Toroidal Magnetic Cloud ModelAstrophysical Jets, Accretion, Angular Momentum Removal, and Space DynamosAppendices: Vector Identities and OperatorsBessel Orthogonality RelationsCapacitor BanksTransmission Lines, Pulse Forming Networks, and TransformersSelected Formulae Readership: Researchers, graduate students, and advanced undergraduates in plasma physics, solar physics, and astrophysics; mathematicians interested in helicity, topology, and self-organization. Keywords: Magnetohydrodynamics;Magnetic Helicity;Spheromaks;MHD;MHD Jets;Kink;Rayleigh Taylor;Accretion Disk;Astrophysical Jet;Solar Prominence;Solar Corona;Solar Corona Loop;CME;Relative Helicity;Taylor Relaxation;Magnetic Reconnection;Whistler Waves;Hall MHD;Electron MHD;Alfven Waves;Magnetic Clouds;Canonical Angular Momentum;Magnetic BrakingReview: Key Features: Unique, no completing titlesThis new revision contains discussion of dynamics underlying self-organization (Taylor relaxation)This new revision contains updates on spheromak research since 2000

Astrophysical Jets and Their Engines

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Publisher : Springer Science & Business Media
ISBN 13 : 9400939272
Total Pages : 265 pages
Book Rating : 4.4/5 (9 download)

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Book Synopsis Astrophysical Jets and Their Engines by : Wolfgang Kundt

Download or read book Astrophysical Jets and Their Engines written by Wolfgang Kundt and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is the documentation of the first Course on 'Neutron Stars, Active Galactic Nuclei and Jets', of an Erice School with a wide astro physical scope. The choice of the subject was made because of an apparent similari ty - stressed already at earlier meetings - of four classes of astrophy sical jet sources: Active Galactic Nuclei, Young Stellar Objects, Binary Neutron Stars and Binary White Dwarfs. They share important properties such as their morphology, high variability and large veloci ty gradients as well as - with some inference - their broad spectrum, hypersonic outflow and core/lobe power ratio. Despite this apparent similarity of the four source classes, quite different models have been put forward for their description: (i) The central engine of active galactic nuclei has been generally thought to be a black hole, in contrast to the central engine of young stellar objects and cometary nebulae which apparently is a pre-T-Tauri star, some six orders of magnitude less compact, and to the central engine of planetary nebulae which mayor may not be a binary white dwarf. (ii) The elongated lobes, or flow patterns, have been often interpreted as highly directional stellar wind outflows whereas in a few well mapped cases, the elongated flow appears to be 'pumped up' through a much narrower channel, or jet, both in the extragalactic and stellar sources.

MHD Flows in Compact Astrophysical Objects

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Publisher : Springer Science & Business Media
ISBN 13 : 3642012906
Total Pages : 425 pages
Book Rating : 4.6/5 (42 download)

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Book Synopsis MHD Flows in Compact Astrophysical Objects by : Vasily S. Beskin

Download or read book MHD Flows in Compact Astrophysical Objects written by Vasily S. Beskin and published by Springer Science & Business Media. This book was released on 2009-12-08 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accretion flows, winds and jets of compact astrophysical objects and stars are generally described within the framework of hydrodynamical and magnetohydrodynamical (MHD) flows. Analytical analysis of the problem provides profound physical insights, which are essential for interpreting and understanding the results of numerical simulations. Providing such a physical understanding of MHD Flows in Compact Astrophysical Objects is the main goal of this book, which is an updated translation of a successful Russian graduate textbook. The book provides the first detailed introduction into the method of the Grad-Shafranov equation, describing analytically the very broad class of hydrodynamical and MHD flows. It starts with the classical examples of hydrodynamical accretion onto relativistic and nonrelativistic objects. The force-free limit of the Grad-Shafranov equation allows us to analyze in detail the physics of the magnetospheres of radio pulsars and black holes, including the Blandford-Znajek process of energy extraction from a rotating black hole immersed in an external magnetic field. Finally, on the basis of the full MHD version of the Grad-Shafranov equation the author discusses the problems of jet collimation and particle acceleration in Active Galactic Nuclei, radio pulsars, and Young Stellar Objects. The comparison of the analytical results with numerical simulations demonstrates their good agreement. Assuming that the reader is familiar with the basic physical and mathematical concepts of General Relativity, the author uses the 3+1 split approach which allows the formulation of all results in terms of physically clear language of three dimensional vectors. The book contains detailed derivations of equations, numerous exercises, and an extensive bibliography. It therefore serves as both an introductory text for graduate students and a valuable reference work for researchers in the field.

Jets from Young Stars IV

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Publisher : Springer Science & Business Media
ISBN 13 : 364202288X
Total Pages : 259 pages
Book Rating : 4.6/5 (42 download)

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Book Synopsis Jets from Young Stars IV by : Paulo Jorge Valente Garcia

Download or read book Jets from Young Stars IV written by Paulo Jorge Valente Garcia and published by Springer Science & Business Media. This book was released on 2009-11-23 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt: Astronomical jets are key astrophysical phenomena observed in gamma-ray bursts, active galactic nuclei or young stars. Research on them has largely occurred within the domains of astronomical observations, astrophysical modeling and numerical simulations, but the recent advent of high energy density facilities has added experimental control to jet studies. Front-line research on jet launching and collimation requires a highly interdisciplinary approach and an elevated level of sophistication. Bridging the gaps between pure magnetohydrodynamics, thermo-chemical evolution, high angular resolution spectro-imaging and laboratory experiments is no small matter. This volume strives to bridge those very gaps. It offers a series of lectures which, taken as whole, act as a thorough reference for the foundations of this discipline. These lectures address the following: · laboratory jets physics from laser and z-pinch plasma experiments, · the magnetohydrodynamic theory of relativistic and non-relativistic stationary jets, · heating mechanisms in magnetohydrodynamic jets, from the solar magnetic reconnection to the molecular shock heating perspectives, · atomic and molecular microphysics of jet shocked material. In addition to the lectures, the book offers, in closing, a presentation of a series of observational diagnostics, thus allowing for the recovery of basic physical quantities from jet emission lines.

Beams and Jets in Astrophysics

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Publisher : Cambridge University Press
ISBN 13 : 9780521335768
Total Pages : 600 pages
Book Rating : 4.3/5 (357 download)

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Book Synopsis Beams and Jets in Astrophysics by : Philip A. Hughes

Download or read book Beams and Jets in Astrophysics written by Philip A. Hughes and published by Cambridge University Press. This book was released on 1991-01-25 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the first to provide students and researchers in the field of astrophysical jets with a comprehensive and up-to-date account of current research. An important feature of the book is that it combines discussions of both extragalactic and Galactic jets. There are ten chapters, authored by fourteen active researchers, each of whom is an expert on their chosen topic, and the book has been edited to provide a cohesive account of this field of study. This is the first volume to integrate studies of jets on all length scales. It will be an important textbook for graduate students, and a valuable reference source for researchers in many areas of extragalactic and Galactic astronomy. It will also be of interest to plasma physicists and space scientists.

The Formation and Disruption of Black Hole Jets

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Publisher : Springer
ISBN 13 : 3319103563
Total Pages : 264 pages
Book Rating : 4.3/5 (191 download)

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Book Synopsis The Formation and Disruption of Black Hole Jets by : Ioannis Contopoulos

Download or read book The Formation and Disruption of Black Hole Jets written by Ioannis Contopoulos and published by Springer. This book was released on 2014-11-10 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the phenomenology displayed by relativistic jets as well as the most recent theoretical efforts to understand the physical mechanisms at their origin. Relativistic jets have been observed and studied in Active Galactic Nuclei (AGN) for about half a century and are believed to be fueled by accretion onto a supermassive black hole at the center of the host galaxy. Since the first discovery of relativistic jets associated with so-called "micro-quasars" much more recently, it has seemed clear that much of the physics governing the relativistic outflows in stellar X-ray binaries harboring black holes and in AGN must be common, but acting on very different spatial and temporal scales. With new observational and theoretical results piling up every day, this book attempts to synthesize a consistent, unified physical picture of the formation and disruption of jets in accreting black-hole systems. The chapters in this book offer overviews accessible not only to specialists but also to graduate students and astrophysicists working in other areas. Covered topics comprise Relativistic jets in stellar systems Launching of AGN jets Parsec-scale AGN jets Kiloparsec-scale AGN jets Black hole magnetospheres Theory of relativistic jets The structure and dynamics of the inner accretion disk The origin of the jet magnetic field X-ray observations, phenomenology, and connection with theory

Relativistic Jets from Active Galactic Nuclei

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Publisher : John Wiley and Sons
ISBN 13 : 3527410376
Total Pages : 425 pages
Book Rating : 4.5/5 (274 download)

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Book Synopsis Relativistic Jets from Active Galactic Nuclei by : Markus Boettcher

Download or read book Relativistic Jets from Active Galactic Nuclei written by Markus Boettcher and published by John Wiley and Sons. This book was released on 2012-02-13 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by a carefully selected consortium of researchers working in the field, this book fills the gap for an up-to-date summary of the observational and theoretical status. As such, this monograph includes all used wavelengths, from radio to gamma, the FERMI telescope, a history and theory refresher, and jets from gamma ray bursts. For astronomers, nuclear physicists, and plasmaphysicists.

Astrophysical Jets

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Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Astrophysical Jets by : Denis Burgarella

Download or read book Astrophysical Jets written by Denis Burgarella and published by . This book was released on 1992 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Virtual astrophysical jets

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Publisher :
ISBN 13 :
Total Pages : 269 pages
Book Rating : 4.:/5 (232 download)

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Book Synopsis Virtual astrophysical jets by :

Download or read book Virtual astrophysical jets written by and published by . This book was released on 2004 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt:

High Energy Density Laboratory Astrophysics

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Publisher : Springer Science & Business Media
ISBN 13 : 1402060556
Total Pages : 345 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis High Energy Density Laboratory Astrophysics by : Sergey V. Lebedev

Download or read book High Energy Density Laboratory Astrophysics written by Sergey V. Lebedev and published by Springer Science & Business Media. This book was released on 2007-05-27 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work will be of interest to a wide range of academics. It provides a comprehensive round-up of the proceedings and papers delivered at the 2006 Conference on High Energy Density Laboratory Astrophysics, held at Rice University in Houston, Texas, USA. The contributions come from scientists interested in this emerging field. They discuss the progress in topics covering everything from stellar evolution and envelopes, to opacities, radiation transport and x-ray photoionized plasmas.

Protostellar Jets in Context

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Publisher : Springer Science & Business Media
ISBN 13 : 3642005764
Total Pages : 662 pages
Book Rating : 4.6/5 (42 download)

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Book Synopsis Protostellar Jets in Context by : Kanaris Tsinganos

Download or read book Protostellar Jets in Context written by Kanaris Tsinganos and published by Springer Science & Business Media. This book was released on 2009-09-24 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is over a quarter of a century since the discovery of out?ows from young stars. The intervening years have led to remarkable advances in our understanding of this phenomenon. Much of the progress can be attributed to advances in facilities and technologies, including not only larger telescopes but also improved instrument and detector performance. In addition protostellar out?ows have now been imaged from the ground and space at high spatial resolution, e. g. with HST, and at a wide - riety of wavelengths from X-rays to radio waves, revealing more and more about their physics. This veritable revolution in observation has been accompanied by an exponential growth in our ability to numerically simulate the launching and pro- gation of jets. Codes continue to improve: they now incorporate more physics and are increasingly ef?cient through, for example, techniques such as adaptive mesh re?nement and the use of parallel processing in cluster environments. Simulating the launching and propagation of a jet all the way from the vicinity of the star up to 4 several thousand AU (a size range of10 ) is now much closer. In more recent times, developments in observation, theory and numerical s- ulation have been joined by laboratory jet experiments reproducing, on centimetre scales, that which is seen in astrophysics to stretch for several parsecs.

Jets in Young Stellar Objects

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Publisher : Springer Science & Business Media
ISBN 13 : 9400709994
Total Pages : 272 pages
Book Rating : 4.4/5 (7 download)

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Book Synopsis Jets in Young Stellar Objects by : A.J.L. Fernandes

Download or read book Jets in Young Stellar Objects written by A.J.L. Fernandes and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: A JENAM 2002 Workshop, Porto, Portugal, 3-5 September 2002