Both a thermal component and a non thermal component as an interaction between the jet and an interstellar medium are studied with an exposure time of 800 ks of Chandra. It is confirmed that an X-ray energy spectra for the nucleus, the knot HST-1 and the knot D is well described with a power law as synchrotron emission. It is found that a power law model is rejected statistically for the knot A and an X-ray energy spectra is well described with a combination model of a power law and a thermal component. There is a possibility that gas in a jet is heated by a shock as interaction between the jet and an interstellar medium and it is observed as thermal emission. The flux of a non thermal bremsstrahlung from the jet as an interaction between accelerated electrons and an interstellar medium is calculated from an X-ray result with an effect of a break in an index and it is suggested that there is some contribution from the knot HST-1 to the observed flux with Fermi. This scenario matches with a non-flux variability in a GeV energy range.
Categories: astro-ph.HE