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The inner-most region of the Seyfert galaxy NGC 2992 has long been suspectedto be the location of intense AGN-host galaxy interaction, but photon pile-upin previous high-resolution observations hampered the study of soft X-rayexcess and the interaction near its nucleus. We present an X-ray imagingspectroscopic analysis of the circumnuclear($1^{\prime\prime}$--$3^{\prime\prime}$) region of NGC 2992 using thezeroth-order image of a 135 ks grating observation obtained with Chandra, whichcaptured the nucleus in a historically low flux state. Extended soft X-rayemission is detected in the circumnuclear region with observed luminosity$L_{\rm X} \sim 7 \times 10^{39}\rm\ erg\ s^{-1}$. The majority of previouslypuzzling detection of soft excess could be associated with the outflow,indicated by the morphological correspondences between soft X-ray emission andfigure-eight-shaped radio bubbles. An anomalous narrow emission line with thecentroid energy $\sim4.97$ keV is found. If attributed to redshifted highlyionized iron emission (e.g., Fe xxv), the required outflow velocity is$\sim0.23\,c$. An alternative explanation is that this line emission could beproduced by the nuclear spallation of iron. We also find asymmetric extended FeK$\alpha$ emission along the galactic disk, which could originate fromreflection by cold gas on $\sim 200$ pc scale.

Revisit the Circumnuclear X-ray Emission of NGC 2992 in a Historically Low State