XMM-Newton Observation of the NW Merger Shock and Radio Relic in Abell 3667

Abell 3667 is the archetype of a merging cluster with radio relics. The NW radiorelic is the brightest cluster relic or halo known, and is believed to be due toa strong merger shock. This NW region will be imaged with XMM. If a merger shockis present, it will be detected, and the density and temperature jumps will bedetermined. The comparison of the shock properties and the radio relic willprovide a critical test of the merger shock acceleration model for relics. Thecombination of the XMM data with our Suzaku Hard Xray Detector spectrum willallow the thermal and nonthermal emission near the relic to be distinguished.The mosaic of this and the previous 7 observations of Abell 3667 will provide acomplete dynamical model for this major cluster merger. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]