Chandra X-Ray Observations of the Inner Optical Filaments in Centaurus A

Details Chandra X-Ray Observations of the Inner Optical Filaments in Centaurus A Chandra X-Ray Observations of the Inner Optical Filaments in Centaurus A

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004apj...617..209e&link_type=abstract

The Astrophysical Journal, Volume 617, Issue 1, pp. 209-213.

Astronomy and Astrophysics

Astronomy

3

Galaxies: Active, Galaxies: Individual: Ngc Number: Ngc 5128, Galaxies: Ism, X-Rays: Galaxies

Scientific paper

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 σ when the data are adaptively smoothed. Comparison with optical [O III] λ5007 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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