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Cygnus A - Study of a Radio Galaxy
A comprehensive and up-to-date review of Cygnus A and what it can teach us about other active galaxies - for graduate students and researchers.
Accretion Disks and Magnetic Fields in Astrophysics
Proceeding of the European Physical Society Study Conference, held in Noto (Sicily), Italy, June 16-20, 1988
Parsec-Scale Radio Jets
Quasars and active galaxies are the most powerful emitters of radiation in the universe. Modern radio telescope arrays have shown that the ultimate energy source resides in the central few parsecs of the galactic nucleus, and powers the emitting regions by way of two oppositely-directed relativistic jets of energy. This volume presents the latest observations and theories of these remarkable objects. Topics discussed include superluminal motions, the physics of jets and shock fronts in jets, related optical observations, and cosmic evolution. Particular attention is given to the "unified theories," which attempt to show that many of the phenomena in powerful extragalactic objects are different aspects of a single, basic mechanism; the main difference in their appearance is a result of their different orientation with respect to the observer.
Virtual Astrophysical Jets
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 astroph...
Protostellar Jets in Context
It is over a quarter of a century since the discovery of out?ows from young stars. The intervening years have led to remarkable advances in our understanding of this phenomenon. Much of the progress can be attributed to advances in facilities and technologies, including not only larger telescopes but also improved instrument and detector performance. In addition protostellar out?ows have now been imaged from the ground and space at high spatial resolution, e. g. with HST, and at a wide - riety of wavelengths from X-rays to radio waves, revealing more and more about their physics. This veritable revolution in observation has been accompanied by an exponential growth in our ability to numerica...
Waves in Astrophysics
This volume, the proceedings of the Tenth Florida Workshop on Nonlinear Astronomy, brings together the work of a diverse group of astronomers, physicists and mathematicians to discuss the following topics: chaos in observational data of variable stars; unstable long wavelength MHD waves; the interstellar medium; Alfven waves and interstellar turbulence; sinuous oscillations and steady warps of polytropic disks; waves in shock-bounded slabs; normal modes and continuous spectra; vorticity and mixing in disks; bending waves in flattened stellar systems; global wave patterns in galaxies; invariant spectra of dynamical systems time-periodic potentials; Lyapunov numbers in pulsating systems; Arnold diffusion in an oscillator chain; universal properties of escape; counterrotating bars; shadowing and noise in nonhyperbolic systems; relativistic accretion disks; tidal perturbation of a gaseous disk; magnetised accretion disks; structural stability; nonlinear stellar pulsation; tidal perturbations, gravitational amplification and galaxy spiral arms; gaseous vortices in barred spiral galaxies; and the barred spiral galaxy NGC 1398.
Microquasars
The Third Microquasar Workshop (or the 'Fifth' Workshop on Galactic Relativ istic Jet Sources), was held in Granada, Andalucia (Spain) on 11-13 September 2000. The aim of this workshop in Granada, following the previous Microquasar Workshops in Greenbelt (1997) and Paris (1998) and the Workshops on galactic sources with relativistic jets in Jodrell Bank (1996) and Milton Keynes (1998), was to focus on the theoretical and observational aspects of microquasars. The study of microquasars, the sources in our Galaxy displaying powerful re lativistic jets, is a rapidly advancing field in astrophysics. The new instrumentation on ground (MERLIN, SCUBA, VLA, VLT) and aboard satellites (ASCA, BSAX, IS...
Extragalactic Radio Sources
On the 100th anniversary of Marconi's successful experiment on radio broadcasting, 250 astronomers from all over the world met in Bologna (Italy) for five days, to update their knowledge of the physics and statistical properties of powerful extragalactic radio sources. Since their discovery in the fifties enormous progress has been made. The existence of superluminal motions in the cores of radio sources, the presence there of a black hole surrounded by an absorbing dust torus, as inferred mostly from studies at other wavelengths, are now accepted ideas. Nevertheless, in spite of these efforts, there are many questions still unanswered. For instance we do not know which mechanism produces the huge amount of energy supplied to radio sources, how the jets connecting the `engine' to the lobes are formed and collimated, which of the differences observed among the various classes of radio sources are apparent and which are real. These and other related topics are discussed in this book.
