Astrophysical Jets

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Astrophysical Jets

Author : A. Ferrari
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

Author : D. Burgarella
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

Author : Silvano Massaglia
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.

Virtual Astrophysical Jets

Author : Silvano Massaglia
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 and Beams

Author : Michael D. Smith
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

Author : Paul M Bellan
Publisher : World Scientific
ISBN 13 : 1786345161
Total Pages : 653 pages
Book Rating : 4.7/5 (863 download)

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

Download or read book Magnetic Helicity, Spheromaks, Solar Corona Loops, And Astrophysical Jets written by Paul M Bellan and published by World Scientific. This book was released on 2018-03-12 with total page 653 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.

Astrophysical Jets and Their Engines

Author : Wolfgang Kundt
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.

Beams and Jets in Astrophysics

Author : Philip A. Hughes
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.

Astrophysical Jets

Author : Denis Burgarella
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:

High Energy Density Laboratory Astrophysics

Author : Sergey V. Lebedev
Publisher : Springer Science & Business Media
ISBN 13 : 1402060556
Total Pages : 321 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 321 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.

Advanced Topics on Astrophysical and Space Plasmas

Author : E.M. de Gouveia Dal Pino
Publisher : Springer Science & Business Media
ISBN 13 : 940115466X
Total Pages : 298 pages
Book Rating : 4.4/5 (11 download)

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Book Synopsis Advanced Topics on Astrophysical and Space Plasmas by : E.M. de Gouveia Dal Pino

Download or read book Advanced Topics on Astrophysical and Space Plasmas written by E.M. de Gouveia Dal Pino and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: In June of 1996, at the idyllic seaside resort of Guarujá, Brazil, a renowned group of researchers in space and astrophysical plasmas met to provide a forum on Advanced Topics on Astrophysical and Space Plasmas at a school consisting of some 60 students and teachers, mainly from Brazil and Argentina, but also from all the other parts of the globe. The purpose was to provide an update on the latest theories, observations, and simulations of space-astrophysical plasma phenomena. The topics covered included space plasma mechanisms for particle acceleration, nonthermal emission in cosmic plasma, magnetohydrodynamic instabilities in solar, interstellar, and other cosmic objects, magnetic field line reconnection and merging, the nonlinear and often chaotic structure of astrophysical plasmas, and the advances in high performance supercomputing resources to replicate the observed phenomena. The lectures were presented by Professor Mark Birkinshaw of the Harvard-Smithsonian Center for Astrophysics and the University of Bristol; Dr Anthony Peratt, Los Alamos National Laboratory Scientific Advisor to the United States Department of Energy; Dr Dieter Biskamp of the Max Planck Institute for Plasma Physics, Garching, Germany; Professor Donald Melrose, Director, Centre for Theoretical Astrophysics, University of Sydney, Australia; Professor Abraham Chian of the National Institute for Space Research, Brazil; and Professor Nelson Fiedler-Ferrara of the University of São Paulo, Brazil. As summarized by Professor Reuven Opher, Institute of Astronomy and Geophysics, University of São Paulo, the advanced or interested student of space and astrophysical plasmas will find reference to nearly all modern aspects in the field of Plasma Astrophysics and Cosmology in the presented lectures.

Stellar Jets and Bipolar Outflows

Author : L. Errico
Publisher : Springer Science & Business Media
ISBN 13 : 9401119244
Total Pages : 444 pages
Book Rating : 4.4/5 (11 download)

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Book Synopsis Stellar Jets and Bipolar Outflows by : L. Errico

Download or read book Stellar Jets and Bipolar Outflows written by L. Errico and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last few years great improvements in the study of stellar jets and bipolar outflows have been achieved, both observationally and theoretically. High resolution observations at various frequencies (radio, IR, optical and X-ray) of these features in different types of objects have shown a large variety of morphologies at all scales often revealing contrasting symmetries which do not allow straightforward kinematic interpretations valid for all cases. In particular, at present, it seems very difficult to give a statistical definition of what the "standard properties" of jets and bipolar outflows are. On the theoretical side, the identification of physical processes capable of producing the observed rich morphological variety of jets and bipolar outflows and supporting them over long lifetimes is still controversial. Furthermore several models are actively discussed in an attempt of reaching a complete understanding of the phenomenon. The workshop provided an unique opportunity for both observers and theoreticians to gather together and produce an updated and exhaustive picture of the field. In addition the meeting has been enriched by the presentation of some works on jets in external galaxies. This topic was focused on what people working on stellar jets could learn from colleagues working on extragalactic jets and vice versa. Invited papers were prepared with the aim of giving the state of the art about scientific subjects; contributed papers and some selected poster papers presented, on the contrary, very recent results in the various fields.

High Energy Density Laboratory Astrophysics

Author : George A. Kyrala
Publisher : Springer Science & Business Media
ISBN 13 : 1402041624
Total Pages : 388 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis High Energy Density Laboratory Astrophysics by : George A. Kyrala

Download or read book High Energy Density Laboratory Astrophysics written by George A. Kyrala and published by Springer Science & Business Media. This book was released on 2005-12-14 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past several years, research teams around the world have developed astrophysics-relevant utilizing high energy-density facilities such as intense lasers and z-pinches. Research is underway in many areas, such as compressible hydrodynamic mixing, strong shock phenomena, radiation flow, radiative shocks and jets, complex opacities, equations of stat, and relativistic plasmas. Beyond this current research and the papers it is producing, plans are being made for the application, to astrophysics-relevant research, of the 2 MJ National Ignition Facility (NIF) laser at Lawrence Livermore National Laboratory; the 600 kj Ligne d'Intégration Laser (LIL) and the 2 MJ Laser Mégajoule (LMJ) in Bordeaux, France; petawatt-range lasers now under construction around the world; and current and future Z pinches. The goal of this conference and these proceedings is to continue focusing attention on this emerging research area. The conference brought together different scientists interested in this emerging new field, with topics covering: - Hydrodynamic instabilities in astrophysics, - Supernovae and supernova remnant evolution, - Astrophysical shocks, blast waves, and jets, - Stellar opacities, - Radiation and thermal transport, - Dense plasma atomic physics and EOS, - X-ray photoionized plasmas, - Ultrastrong magnetic field generation.

MHD Flows in Compact Astrophysical Objects

Author : Vasily S. Beskin
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.

Literature 1987, Part 2

Author : U. Esser
Publisher : Springer Science & Business Media
ISBN 13 : 3662123614
Total Pages : 1110 pages
Book Rating : 4.6/5 (621 download)

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Book Synopsis Literature 1987, Part 2 by : U. Esser

Download or read book Literature 1987, Part 2 written by U. Esser and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 1110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Astronomy and Astrophysics Abstracts aims to present a comprehensive documen tation of the literature concerning all aspects of astronomy, astrophysies, and their border fields. It is devoted to the recording, summarizing, and indexing of the relevant publications throughout the world. Astronomy and Astrophysics Abstracts is prepared by a special department of the Astronomisches Rechen-Institut under the auspices of the International Astronomical Union. Volume 44 records literature published in 1987 and received before February 15, 1988. Some older documents which we received late and which are not surveyed in earlier volumes are inc1uded too. We acknowledge with thanks contributions of our colleagues all over the world. We also express our gratitude to all organiza tions, observatories, and publishers which provide us with complimentary copies of their publications. Dr. Siegfried Böhme retired from his duties as co-editor of Astronomy and Astro physics Abstracts on December 31, 1987. Since 1950 he partieipated in the biblio graphie work of the institute. He served as a reviewer for the Astronomischer Jahresbericht and became one of the editors of Astronomy and Astrophysics Ab stracts in 1969. After his retirement in 1975 he took care of, particularly, the Russian literature on a voluntary basis for 12 years. It is a pleasure to thank Siegfried Böhme for his valuable contributions. Starting with Volume 33, all the recording, correction, and data processing work was done by means of computers. The recording was done by our technical staff members Ms. Helga Ballmann, Ms. Christiane Jehn, Ms. Monika Kohl, Ms.

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

Author : Paul Murray Bellan
Publisher : Wspc (Europe)
ISBN 13 : 9781786345141
Total Pages : 654 pages
Book Rating : 4.3/5 (451 download)

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Book Synopsis Magnetic Helicity, Spheromaks, Solar Corona Loops, and Astrophysical Jets by : Paul Murray Bellan

Download or read book Magnetic Helicity, Spheromaks, Solar Corona Loops, and Astrophysical Jets written by Paul Murray Bellan and published by Wspc (Europe). This book was released on 2018 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt: Revision of: Spheromaks: a practical application of magnetohydrodynamic dynamos and plasma self-organization, 2000.

Jets from Young Stars IV

Author : Paulo Jorge Valente Garcia
Publisher : Springer
ISBN 13 : 3642022898
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. This book was released on 2009-11-09 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.