Marinucci, A, Bianchi, S, Braito, V, Matt, G, Nardini, E and Reeves, J (2018) Tracking the Iron Kα line and the Ultra Fast Outflow in NGC 2992 at different accretion states. Monthly Notices of the Royal Astronomical Society. ISSN 0035-8711

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Abstract

The Seyfert 2 galaxy NGC 2992 has been monitored eight times by XMM-Newton in 2010 and then observed again in 2013, while in 2015 it was simultaneously targeted by Swift and NuSTAR. XMM-Newton always caught the source in a faint state (2-10 keV fluxes ranging from 0.3 to 1.6× 10−11 erg cm−2 s−1) but NuSTAR showed an increase in the 2-10 keV flux up to 6× 10−11 erg cm−2 s−1. We find possible evidence of an Ultra Fast Outflow with velocity v1 = 0.21 ± 0.01c (detected at about 99% confidence level) in such a flux state. The UFO in NGC 2992 is consistent with being ejected at a few tens of gravitational radii only at accretion rates greater than 2% of the Eddington luminosity. The analysis of the low flux 2010/2013 XMM data allowed us to determine that the Iron Kα emission line complex in this object is likely the sum of three distinct components: a constant, narrow one due to reflection from cold, distant material (likely the molecular torus); a narrow, but variable one which is more intense in brighter observations and a broad relativistic one emitted in the innermost regions of the accretion disk, which has been detected only in the 2003 XMM observation. Galaxies: active, Galaxies: Seyfert, Galaxies: accretion, Individual: NGC 2992

Item Type: Article
Additional Information: This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © 2018 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
Subjects: Q Science > QB Astronomy > QB460 Astrophysics
Depositing User: Symplectic
Date Deposited: 11 Jun 2018 14:19
Last Modified: 11 Jun 2018 14:23
URI: http://eprints.keele.ac.uk/id/eprint/5008

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