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With new calibration data, thermal emission from the jet of radio galaxy M87is studied with about 700 ks archival data with Chandra. For nucleus, HST-1,knot D, X-ray energy spectra is well fitted with a power law. However, For knotA, a power law model is rejected with a high significance and an X-ray energyspectra is well fitted with a combination model of a power law and an apecmodel of 0.2 keV and a metal abundance 0.00. Thermal emission from knot A isconfirmed.

X-ray thermal emission from the jet of M87 with Chandra