Deep Chandra Observations of NGC 5728: A Study of Morphology and Spectral Properties of the Extended X-ray Emission
Abstract
Using deep Chandra observations of the Compton Thick (CT) AGN NGC 5728, we present a spatial and spectral study of the diffuse X-ray emission in this target. The nuclear spectrum (1.5" circle) and extended spectrum (8"-1.5" circle) are complex, with non-thermal nuclear emission, photoionization and thermal emission being needed for a good fit. The diffuse emission is more extended in the soft band (<3 keV), but it is also extended in the hard band (>3 keV), as seen in other CT AGNs. Interestingly, the soft diffuse emission also shows significant extent in the cross-cone direction, where it would be mostly obscured by the torus in the usual AGN model. Additionally, the emission in the cross-cone direction shows two almost symmetric "bumps" in the soft-band, which can be identified in the imaging analysis as two almost symmetric "handles", corresponding to a near-IR/optical star-forming ring analyzed in previous studies of this source.
- Publication:
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American Astronomical Society Meeting Abstracts
- Pub Date:
- January 2023
- Bibcode:
- 2023AAS...24136022T