089080

The long-awaited HAWC discovery of TeV gamma-ray emission from the eastern and western lobes of W50 nebula powered by the microquasar SS433 was the first evidence that accreting X-ray binaries can efficiently accelerate particles to TeV-PeV energies indicating a new class of Galactic PeVatrons. The proposed NuSTAR and XMM observations will complete a broad-band X-ray survey of the particle acceleration and jet termination sites of the W50/SS433 system. Spatially-resolved X-ray spectroscopy will resolve the non-thermal X-ray emission characterize thermal X-ray knots in the western lobe and constrain the jet acceleration efficiency. Our multi-wavelength approach with the proposed observations will provide deep insights to this unique mini-AGN jet interacting with the W50 nebula. [truncated! Please see actual data for full text]