42,660 research outputs found
Activities of the Department of Astronomy and McDonald Observatory of the University of Texas at Austin
McDonald Observatory of the University of Texas at Austin reports on its activities during the period 1 Jan. 1986 to 30 June 1986. Extensive observations of Halley's Comet were obtained. The comet exhibited large variability; moreover, its variability was much more rapid than can be accounted for by water vaporization as the sole controller of activity. Jupiter satellite Io's atmosphere was found to be distended by more than the equilibrium scale height but less than for unimpeded streaming into space. The atmosphere is at least temporarily bound to IO. Uranus' (3-0) H2 quadrupole line shapes require a modification of Baines and Bergstralh's standard model which incorporates at high altitude absorbing haze in addition to the lower haze layer. A fraction of normal H2 equal to 0.25 + or 0.10 is derived, in good agreement with the standard model. This result is unchanged when the preliminary temperature structure derived by the Voyager Radio Occultation Experiment is used instead of Appleby's model c. Out of the six Pluto-Charon mutual events observed this year, data were obtained on four. Preliminary analysis is yielding improved estimates for the diameters, masses, densities, and albedos of these objects
C++QED: An object-oriented framework for wave-function simulations of cavity QED systems
We present a framework for efficiently performing Monte Carlo wave-function
simulations in cavity QED with moving particles. It relies heavily on the
object-oriented programming paradigm as realised in C++, and is extensible and
applicable for simulating open interacting quantum dynamics in general. The
user is provided with a number of ``elements'', eg pumped moving particles,
pumped lossy cavity modes, and various interactions to compose complex
interacting systems, which contain several particles moving in electromagnetic
fields of various configurations, and perform wave-function simulations on such
systems. A number of tools are provided to facilitate the implementation of new
elements.Comment: 31 pages, 8 figures, 3 table
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