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We present Suzaku observations of the Centaurus cluster out to 0.95r200,taken along a strip to the north west. We have also used congruent Chandraobservations of the outskirts to resolve point sources down to a threshold fluxaround 7 times lower than that achievable with just Suzaku data, considerablyreducing the systematic uncertainties in the cosmic X-ray background emissionin the outskirts. We find that the temperature decreases by a factor of 2 fromthe peak temperature to the outskirts. The entropy profile demonstrates acentral excess (within 0.5r200) over the baseline entropy profile predicted bysimulations of purely gravitational hierarchical structure formation. In theoutskirts the entropy profile is in reasonable agreement with the baselineentropy profile from Voit et al., but lies slightly below it. We find that thepressure profile agrees with the universal pressure profile of Arnaud et al.but lies slightly above it in the outskirts. The excess pressure and decrementin entropy in the outskirts appear to be the result of an excess in themeasured gas density, possible due to gas clumping biasing the densitymeasurements high. The gas mass fraction rises and reaches the mean cosmicbaryon fraction at the largest radius studied. The clumping corrected gas massfraction agrees with the expected hot gas fraction and with the simulations ofYoung et al. We further the analysis of Walker et al. which studied the shapesof the entropy profiles of the clusters so far explored in the outskirts withSuzaku. When scaled by the self similar entropy the Suzaku entropy profilesdemonstrate a central excess over the baseline entropy profile, and areconsistent with it at around r500 . However outside r500 the entropy profilestend to lie below the baseline entropy profile.

X-ray exploration of the outskirts of the nearby Centaurus cluster using Suzaku and Chandra