Virtual Astrophysical Jets
Theory Versus Observations
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Beschreibung
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.
Provides a global view on stellar jets and extragalactic jets unlike other books which deal with only one of these The authors are among the most active scientists in the field of theoretical interpretation of the astrophysical jets phenomenology and therefore this book can be considered as the most up-to-date in this field Astrophysical jets are collimated outflows of matter and fields that originate typically, but not uniquely, from Active Galactic Nuclei (AGNs) and young stars (YSOs). Jets from AGNs have linear sizes ranging from few up to thousand light years and velocities close to the speed of light, whereas jets from YSOs may reach few parsecs in size and some hundreds kilometers per second in speed. The study of astrophysical jets is utterly important since intimately connected with the formation and evolution of galaxies and stars and the dynamical processes of the interstellar and intergalactic medium
Autor*in
Silvano Massaglia
Themen in »Virtual Astrophysical Jets«
Accretion Galaxy astrophysics relativistic jet star stellar