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X-ray binary jets are candidates for cosmic-ray particle accelerators above 10^15 eV. Since shock waves formed inside the jets are considered to be the main acceleration region, the identification of structures associated with shock waves is important to elucidate the physical properties of particle acceleration by X-ray binary jets. The microquasar SS433 is one of the most active jets in the system and has attracted attention as a source of cosmic-ray particle acceleration, as gamma rays have been detected on the jet. The presence of a filamentary structure extending in a north-south direction at the terminal region of the SS433 eastern jet is a subject of interest as a cosmic ray particle acceleration source. We performed spectral and polarimetric analysis using 114-8,000 MHz data observed by VLA and LOFAR, and verified that the filamentary structure at the jet terminal region may be related to the shock wave. The maximum energy of cosmic rays that can be accelerated by the jet terminal shock was also estimated. These results will be presented in this talk. |
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