SIMBAD references

2026ApJ...998..135K - Astrophys. J., 998, 135 (2026/February-2)

Probing Active Galactic Nuclei-Interstellar Medium Feedback through Extended X-Ray Emission in ESO 137-G034.

KROL D.L., FABBIANO G., ELVIS M., TRINDADE FALCAO A., MIDDEI R., ROSARIO D., DAVIES R., SHIMIZU T. and HILL D.

Abstract (from CDS):

We present a detailed analysis of the X-ray emission of the Compton-thick (CT) active galactic nuclei (AGN) ESO 137-G034 based on deep (∼230 ks) Chandra observations. As in other CT AGNs, the morphology of the emission is elongated, approximately following the [O III] ionization bicone. With spatially resolved spectral modeling, we show that the extended emission within the bicone regions is most readily explained as from a mixture of photoionized gas and shock-heated plasma, reflecting the combined effects of radiative and kinematic AGN feedback. By comparing the morphology of the X-ray emission in narrow spectral bands and that of the 3 cm radio jet, we find suggestive evidence of thermal, possibly shocked emission associated with the SE termination of the radio jet. This interpretation is also supported by the lack of [O III] relative to the 0.3-3.0 keV flux in the inner 3″ (∼600 pc) of the SE cone, which would be consistent with an additional thermal X-ray component on top of the photoionized emission of an outflowing wind. A similar effect is only seen within the inner 1″ (200 pc) of the NW cone. In the radial profile of the [O III]/X-ray flux ratio and the X-ray hardness ratio within the inner ∼3″ (∼600 pc) of the SE cone, we see an asymmetry, with no counterpart in the NW cone. We detect soft extended X-ray emission in the cross cones, which may originate from the interaction of an embedded radio jet with a clumpy interstellar medium. These results highlight the importance of both radiative and mechanical feedback in shaping the circumnuclear environment of ESO 137-G034.

Abstract Copyright: © 2026. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): High energy astrophysics - Active galactic nuclei - X-ray active galactic nuclei - Diffuse radiation - Interstellar medium - Shocks - AGN host galaxies

Simbad objects: 10

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