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Titlebook: Astrophysical Jets and Their Engines; Wolfgang Kundt Book 1987 D. Reidel Publishing Company, Dordrecht, Holland 1987 Accretion.Galaxy.Quas

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發(fā)表于 2025-3-21 19:14:46 | 只看該作者 |倒序?yàn)g覽 |閱讀模式
期刊全稱Astrophysical Jets and Their Engines
影響因子2023Wolfgang Kundt
視頻videohttp://file.papertrans.cn/164/163681/163681.mp4
學(xué)科分類Nato Science Series C:
圖書封面Titlebook: Astrophysical Jets and Their Engines;  Wolfgang Kundt Book 1987 D. Reidel Publishing Company, Dordrecht, Holland 1987 Accretion.Galaxy.Quas
影響因子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 stel
Pindex Book 1987
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The Jets,can be destroyed by neutral intruders, such as photons and hydrogen atoms. The possibility of in-situ acceleration of electrons in their hotspots, the correct form of the relativistic beaming law and the confinement problem are discussed. It is argued that all jets are supersonic, that the flow in t
地板
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,The Quasar Family — An Introduction and Taxonomy,he common terminology. The basic unity of all kinds of quasar activity is emphasised. Some differences between various family members are given and some interrelationships pointed out. Finally, it is emphasised that quasar activity at low levels is extremely common.
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T Tauri Stars, Pre-T Tauri Stars, and Stellar Jets,e “pre-T Tauri stars”, are thought to be the stars responsible for exciting Herbig-Haro objects. Pre-T Tauri stars are capable of generating “stellar jets” by which bipolar flows carry material out into the ambient medium out of which low-mass stars form. Manifestations of these bipolar flows are: s
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The Gas Dynamics of Jets,suggest that some of the observed morphology of extragalactic jets is due to the form of the ambient density distribution. The series of knots seen in both stellar and extragalactic jets appear to be related to the shock cell structure found in laboratory jets. It is shown that there can be quite a
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Cosmological Evolution of Active Galaxies & Quasars,rivations see e.g. Weinberg (1972), Gunn (1978). These relations depend on the current values of the parameters H & Ω (we dispense with the usual zero subscript); where important, dependence of results on these values will be indicated, defining h ≡ H/100 kms. Mpc.. Often, the effect of varying h &
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