SIMBAD references

2017ApJ...840..120M - Astrophys. J., 840, 120-120 (2017/May-2)

The nuclear X-ray emission-line structure in NGC 2992 revealed by Chandra-HETGS.

MURPHY K.D., NOWAK M.A. and MARSHALL H.L.

Abstract (from CDS):

We present the narrow emission-line structure revealed by a 135 ks Chandra observation of Seyfert galaxy NGC 2992, using the High Energy Transmission Grating Spectrometer. The source was observed in an historically low-flux state. Using a Bayesian Block search technique, we detected neutral Si Kα and S Kα fluorescence and two additional lines that are consistent with redshifted, ionized Si emission. The latter two features are indicative of a photoionized outflow with a velocity of ∼2500 km s–1. We also observed prominent, unresolved line emission at the rest energy of Fe Kα, with a 90% confidence FWHM velocity width of 2000 km s–1 ( 2800 km s–1) and equivalent width of 406-1148 eV (288-858 eV) when broad Fe Kα line emission, as detected by Suzaku, was (was not) included in the model.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: active - galaxies: Seyfert - line: profiles - X-rays: galaxies - X-rays: individual: NGC 2992 - X-rays: individual: NGC 2992

Simbad objects: 5

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2019.10.23-16:13:31

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