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We present a publicly available code called Hammurabi for generating mockpolarized observations of Galactic synchrotron emission for telescopes likeLOFAR, SKA, Planck and WMAP, based on model inputs for the Galactic magneticfield (GMF), the cosmic-ray density distribution and the thermal electrondensity. We also present mock UHECR deflection measure (UDM) maps based onmodel inputs for the GMF. In future, when UHECR sources are identified, thiswill allow us to define UDM as a GMF probe in a similar way as polarized radiosources permit us to define rotation measures. To demonstrate the code'sabilities mock observations are compared to real data as a means to constrainthe input parameters of our simulations with a focus on large-scale magneticfield properties. As expected, attempts at trying to model the synchrotron,UHECR deflection and RM input parameters, show that any additionalobservational data set greatly increases the constraints on the models. Thehammurabi code addresses this by allowing to perform simulations of severaldifferent data sets simultaneously, providing the means for a more reliableconstraint of the magnetized inter-stellar-medium.

Simulating polarized Galactic synchrotron emission at all frequencies, the Hammurabi code