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Abell 2256 is a rich, nearby (z=0.0594) galaxy cluster that has significantevidence of merger activity. We present new radio and X-ray observations ofthis system. The low-frequency radio images trace the diffuse synchrotronemission of the Mpc-scale radio halo and relics as well as a number of recentlydiscovered, more compact, steep spectrum sources. The spectral index across therelics steepens from the north-west toward the south-east. Analysis of thespectral index gradients between low and and high-frequencies shows spectraldifferences away from the north-west relic edge such that the low-frequencyindex is significantly flatter than the high frequency spectral index near thecluster core. This trend would be consistent with an outgoing merger shock asthe origin of the relic emission. New X-ray data from XMM-Newton revealinteresting structures in the intracluster medium pressure, entropy andtemperature maps. The pressure maps show an overall low pressure coreco-incident with the radio halo emission, while the temperature maps revealmultiple regions of cool emission within the central regions of Abell 2256. Thetwo cold fronts in Abell 2256 both appear to have motion in similar directions.

The Curious Case of Abell 2256