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Jets from Stars and Galactic Nuclei

2007-01-05 Science
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Release : 2007-01-05
Genre : Science
Kind : eBook
Book Rating : 539/5 ( reviews)

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Book Synopsis Jets from Stars and Galactic Nuclei by : Wolfgang Kundt

Download or read book Jets from Stars and Galactic Nuclei written by Wolfgang Kundt. This book was released on 2007-01-05. Available in PDF, EPUB and Kindle. Book excerpt: Jets are ubiquitous in the Universe, but ill-understood. Conservative books base their interpretations on focused stellar winds, ejected "bullets", black-hole central engines, and in-situ upgrading of electron energies via shocks. This volume, however, attempts a uniform interpretation of the bipolar-flow family, involving extremely relativistic pair plasma as the jet substance, and rotating magnets (possibly burning disks) as the central engines. Among the discussed sources are SS 433, YSO jets, planetary nebulae, our galactic center, and the class of extragalactic QSOs, both radio-loud and radio-quiet.

Astrophysical Jets and Their Engines

2012-12-06 Science
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Release : 2012-12-06
Genre : Science
Kind : eBook
Book Rating : 272/5 ( reviews)

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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. This book was released on 2012-12-06. 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.

Jets from Young Stars IV

2009-11-09 Science
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Release : 2009-11-09
Genre : Science
Kind : eBook
Book Rating : 898/5 ( reviews)

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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. This book was released on 2009-11-09. 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.

Jets from Stars and Galactic Nuclei

1996 Astrophysical jets
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Release : 1996
Genre : Astrophysical jets
Kind : eBook
Book Rating : 365/5 ( reviews)

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Book Synopsis Jets from Stars and Galactic Nuclei by : Wolfgang Kundt

Download or read book Jets from Stars and Galactic Nuclei written by Wolfgang Kundt. This book was released on 1996. Available in PDF, EPUB and Kindle. Book excerpt:

The Formation and Disruption of Black Hole Jets

2014-11-10 Science
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Release : 2014-11-10
Genre : Science
Kind : eBook
Book Rating : 563/5 ( reviews)

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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. This book was released on 2014-11-10. 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

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