The study of an interaction between the jet and an interstellar medium around knot E and knot F of radio galaxy M87 by Chandra

Abstract

The jet may compress an interstellar medium and soft X-ray outside the jet may be absorbed by a compressed interstellar medium and thermal emission heated by a shock is expected inside the jet. I analyze X ray image of the surroundings of the jet of M87 by Chandra. There is an original work for an image analysis. In this time, I select data for an image analysis by a removal of a pile up event completely and a precession consideration. I confirm a dip in soft X ray outside the jet between knot E and knot F with 224 ks archival data. I analyze X ray energy spectra for knot E and knot F with 480 ks archival data by Chandra in order to search for thermal emission. However, X ray energy spectra for knot E and knot F are well described with synchrotron emission.