Atmosphere of Callisto

Atmosphere of Callisto

[1] During the Galileo flybys of Callisto in 1999, a CO2 atmosphere and an ionosphere were detected. Using the Caltech/Jet Propulsion Laboratory one-dimensional KINETICS model, we have successfully simulated the observed electron density within a factor of 2, while satisfying the observational constraints on carbon and oxygen atoms. We conclude that photoionization of CO2 alone is insufficient ...

Geologic Map of Callisto

Callisto: Mergers Without Pain

As value networks evolve, we observe the phenomenon of businesses consolidating through mergers and businesses disaggregating and then virtually “re-merging” dynamically to respond to new opportunities. But these constituent businesses were not built in any standard way, and neither were their IT systems. An example in the industrial sector is the need to merge product and parts catalogs, and s...

Callisto: A Configurable Annotation Workbench

In order to support a range of textual annotation tasks, we have developed a new annotation tool called Callisto. To promote taskspecific specialization of the interface and associated constraint checking, Callisto provides a facility for the independent development, compilation and installation of task module plug-ins (in the form of Java Archive jar files). The common Callisto backend provide...

Thermal infrared spectroscopy of Europa and Callisto

The trailing hemispheres of Europa and Callisto were observed at 913/•m, and a spectrum of Europa with better spectral resolution and a better signal-to-noise ratio than was previously possible has been derived. The ratio spectrum of the two satellites has a signal-to-noise ratio of approximately 30 for a spectral resolving power of approximately 50. The disk-integrated, effective color tempera...