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The first measurement of pseudorapidity (Delta-eta) and azimuthal angle(Delta-phi) correlations between high transverse momentum charged hadrons (p_T> 2.5 GeV/c) and all associated particles is presented at both short- (smallDelta-eta) and long-range (large Delta-eta) over a continuous pseudorapidityacceptance (-4<Delta-eta<2). In these proceedings, the various near- andaway-side features of the correlation structure are discussed as a function ofcentrality in Au+Au collisions measured by PHOBOS at sqrt(s_NN)=200 GeV. Inparticular, this measurement allows a much more complete determination of thelongitudinal extent of the ridge structure, first observed by the STARcollaboration over a limited eta range. In central collisions the ridgepersists to at least Delta-eta=4, diminishing in magnitude as collisions becomemore peripheral until it disappears around Npart=80.

High p_T Triggered Delta-eta,Delta-phi Correlations over a Broad Range in Delta-eta