Chandra Detection of the Circumnuclear Molecular Torus of the Compton Thick AGN in NGC 5643

Abstract

We report a clumpy elongated feature found with deep Chandra ACIS high-resolution imaging of the Fe Kα line emission in the nuclear region of the Compton Thick Active Galactic Nucleus (CT AGN) galaxy NGC 5643. This feature extends for ~65 pc N-S. No corresponding feature is seen in the 3.0-6.0 keV continuum. The Fe Kα feature is spatially consistent with the N-S elongation found in the CO(2-1) high resolution imaging with ALMA (Alonso-Herrero et al 2018), but slightly more extended than the rotating molecular disk of r=26 pc indicated by the kinematics of the CO(2-1) line. The Chandra detection of a corresponding N-S structure in the neutral Fe Kα line, would argue for both CO and Fe Kα emission originating from the obscuring torus.

ApJ Letters, in press

References in corpus (6)

• Resolving the nuclear obscuring disk in the Compton-thick Seyfert galaxy NGC5643 with ALMA
• Discovery of Kiloparsec Extended Hard X-ray Continuum and Fe K alpha from the Compton Thick AGN ESO428-G014
• Deep Chandra Observations of ESO 428-G014: III. High Resolution Spectral Imaging of the Ionization Cone and Radio Jet Region
• Spatially resolved Fe K spectroscopy of NGC 4945
• Deep Chandra Observations of ESO 428-G014: II. Spectral Properties and Morphology of the Large-Scale Extended X-ray Emission
• An Iwasawa-Taniguchi Effect for Compton-thick Active Galactic Nuclei

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• The kpc Scale Fe K$\alpha$ Emission in the Compton Thin Seyfert 2 Galaxy NGC 4388 resolved by Chandra
• X-ray signatures of the polar dusty gas in AGN
• First Hard X-ray Observation of a Compact Symmetric Object: A Broadband X-ray Study of a radio galaxy OQ+208 with NuSTAR and Chandra
• X-ray Photons in the CO 2-1 'Lacuna' of NGC 2110
• X-ray Emission of the $\gamma$-ray Loud Young Radio Galaxy NGC 3894
• The interaction of the active nucleus with the host galaxy interstellar medium
• The Complex X-ray Obscuration Environment in the Radio Loud Type 2 Quasar 3C 223