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Titlebook: Virtual Astrophysical Jets; Theory Versus Observ Silvano Massaglia,Gianluigi Bodo,Paola Rossi Book 2004 Springer Science+Business Media Dor

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樓主: Capricious
21#
發(fā)表于 2025-3-25 03:30:54 | 只看該作者
MHD Accretion-Ejection Flowsng large-scale, self-collimated MHD jets. In particular, I discuss the physical conditions required to produce these outflows and the related numerical issues. As an illustration I also present axisymmetric MHD numerical simulations of such accretion-ejection engines, demonstrating the mechanism con
22#
發(fā)表于 2025-3-25 09:46:23 | 只看該作者
On the MHD Acceleration of Astrophysical Jetsive Mesh Refinement (AMR) code (FLASH — University of Chicago). Thanks to this tool we can follow the evolution of the system for many dynamical timescales with a high-spatial resolution. Assuming an initial condition in which a Keplerian disk, thus with no accretion motions, is threaded by a unifor
23#
發(fā)表于 2025-3-25 14:58:43 | 只看該作者
MHD Simulations of Crab’s Jet and Torusstronomy than any other single object beyond the solar system. The most intriguing recent result is the completely unexpected discovery of a peculiar “jet-torus” structure in the inner part of the nebula. Similar structures were found later in other Crab-like nebulae. This discovery clearly indicate
24#
發(fā)表于 2025-3-25 16:56:49 | 只看該作者
How Can Jets Survive MHD Instabilities?arge-scale coalescence effect partially countered by small-scale reconnection events is shown to dominate the dynamics in a two-dimensional layer subject to Kelvin-Helmholtz (KH) instabilities. Second, an interaction mechanism between two different types of instabilities (KH and current-driven modes
25#
發(fā)表于 2025-3-25 23:22:47 | 只看該作者
Entrainment and Deceleration of Relativistic Jets can be due either to intrinsec different properties of the AGN or to interaction of the jet with different enviroments. We assume that jets are always relativistic and supersonic close to their source, as recent observations suggest, and we explore the conditions in which the jets decelerate assumi
26#
發(fā)表于 2025-3-26 03:45:31 | 只看該作者
Book 20043". 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
27#
發(fā)表于 2025-3-26 04:23:27 | 只看該作者
Attilio Ferrari Abkürzungen von wichtigen Begriffen sowie einer Terminologie zum Bewegungsapparat auf den Buchrückeninnenseiten. Sie werden insbesondere dem Anf?nger eine gro?e Erleichterung sein und langes Suchen ersparen.
28#
發(fā)表于 2025-3-26 08:31:46 | 只看該作者
29#
發(fā)表于 2025-3-26 15:07:00 | 只看該作者
MHD Outflows from Hot Coronaeication of AGN jets and extension to the relativistic regime of these exact axisymmetric solutions Finally we discuss how it is possible to extend the polytropic equation of state and Parker winds to the relativistic regime to have a simple toy model for understanding thermal acceleration.
30#
發(fā)表于 2025-3-26 17:23:03 | 只看該作者
Virtual Jets: From Self-Similar to Numerical Solutions (2) to show how self-similar solutions can help to solve these difficulties. In particular, they allow to choose suitable boundary conditions and/or relevant initial conditions. In all cases anyway, they provide a framework for understanding and testing the outcome of numerical simulations.
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