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We present results obtained from a series of observations of the supernovaremnant RX J1713.7-3946 by the Suzaku satellite. The observations cover abouttwo-thirds of the remnant surface. We successfully detected hard X-rays up to ~40 keV from each pointing. The hard X-ray spectra are described by power-lawfunctions with photon indices of ~ 3.0, which are larger than those in theenergy region below 10 keV. Connection of the spatially-integrated XIS and HXDspectra clearly reveals a spectral cutoff in the 0.4--40 keV X-ray spectrum.This cutoff is interpreted to correspond to the maximum acceleration energy ofelectrons emitting synchrotron radiation. The wide-band coverage of Suzaku forthe first time allows us to derive the parent electron spectrum in the cutoffregion, which shows good agreement with theoretical predictions. The inferredcutoff energy in the spatially-integrated X-ray spectrum indicates thatparticle acceleration in the remnant is so efficient that it is almost at thetheoretical limit, the so-called Bohm limit. Based on the Suzaku data, wepresent results of multi-wavelength studies from spectral and morphologicalpoints of view. The spectral energy distribution favors the hadronic scenariorather than the leptonic scenario. For the morphology studies, we compare thesurface brightness maps from the Suzaku XIS and the H.E.S.S. telescope. Weconfirm the strong correlation between X-ray and TeV gamma-ray emission. Inaddition to the correlation, we found that in the bright western rim regionsthe X-ray emission is brighter than expected from the general X-ray togamma-ray correlation.

Study of Nonthermal Emission from SNR RX J1713.7-3946 with Suzaku