XMM Users' Handbook


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CSim - The Cosmic Simulator

CSim is that part of SciSim creating a simulated piece of sky, with sources with user-specified properties. It includes a Ray Generator, called GSim. Csim can produce astronomical model data for subsequent processing by the other simulators within SciSim.

X-ray sources can be created interactively or by using source lists. The results from interactive sessions can be written into output files, which can later be reused as inputs to CSim.

The following source parameters can at present be defined in CSim:

All these parameters are described in more detail in the CSim online help.


A special part of CSim is the Ray Generator, GSim, which simulates the distribution of incoming photons from a given source (distribution). These rays are propagated later, by other parts of SciSim, through the telescope assemblies and into the detectors, thereby imaging the artificial view of the sky onto the detector plane.



 
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Next: The GSim GUI Up: SciSim components Previous: SciSim components
European Space Agency - XMM Science Operations Centre