期刊
ASTROPHYSICAL JOURNAL
卷 617, 期 1, 页码 209-213出版社
UNIV CHICAGO PRESS
DOI: 10.1086/425164
关键词
galaxies : active; galaxies : individual (NGC 5128); galaxies : ISM; X-rays : galaxies
We have obtained Chandra High Resolution Camera (0.1-10 keV) X-ray imaging of the inner optical filaments of Cen A. Faint X-ray emission is observed associated with the filaments with significance levels of 2-3.5 sigma when the data are adaptively smoothed. Comparison with optical [O III] lambda5007 emission-line imaging suggests that the X-ray-emitting gas is associated with the northwest edge of the optical line-emitting gas. This region of the filaments is closest to the radio jet and is therefore a candidate for shock heating induced by turbulent instabilities in the interstellar medium. The observed X-ray luminosity is significantly smaller than that predicted by purely radiative shock models of the filaments, implying that mechanical energy input does not provide 100% of the ionizing energy budget for the filaments.
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