Astrophysical Jets and Their Engines (eBook, PDF)

Redaktion: Kundt, Wolfgang

• Format: PDF

Produktbeschreibung

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.

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Produktdetails

• Verlag: Springer Netherlands
• Seitenzahl: 256
• Erscheinungstermin: 6. Dezember 2012
• Englisch
• ISBN-13: 9789400939271
• Artikelnr.: 44054791

Inhaltsangabe

The Sources and Their Models.- The Central Engine.- The Jets.- The Quasar Family - an Introduction and Taxonomy.- Our Galactic Center.- Jets in X-Ray Binaries.- T Tauri Stars, Pre-T Tauri Stars, and Stellar Jets.- The Physics and the Structure of Agn.- Improved Accretion Disk Models of Continuum Emission from Active Galactic Nuclei.- Velocities in Radio Galaxies and Quasars.- Polarization and Magnetic Field Structure.- Numerical Simulation of Jets.- The Gas Dynamics of Jets.- Cosmological Evolution of Active Galaxies and Quasars.- Unified Beaming Models and Compact Radio Sources.- Magnetic Equilibria of Jets.- Stability of Magnetic Jet Equilibria.- Dynamical Effects of Large-Scale Magnetic Fields in Jets.- Particle Acceleration in Astrophysical Jets.- Optical Synchrotron Emission from Radio Hot Spots.- General Relativistic Effects on Collimation of a Jet.- Some Studies on Giant Radio Galaxies.