A low-flux state in IRAS 00521-7054 seen with NuSTAR and XMM-Newton: relativistic reflection and an ultrafast outflow
Date Issued
2019
Author(s)
Walton, D. J.
•
•
Gallo, L. C.
•
Reynolds, M. T.
•
Ricci, C.
•
Dauser, T.
•
Fabian, A. C.
•
Garcia, J. A.
•
Harrison, F. A.
•
Risaliti, G.
•
Stern, D.
Abstract
We present results from a deep, coordinated $XMM$-$Newton$+$NuSTAR$
observation of the Seyfert 2 galaxy IRAS 00521-7054. The $NuSTAR$ data provide
the first detection of this source in high-energy X-rays ($E > 10$ keV), and
the broadband data show this to be a highly complex source which exhibits
relativistic reflection from the inner accretion disc, further reprocessing by
more distant material, neutral absorption, and evidence for ionised absorption
in an extreme, ultrafast outflow ($v_{\rm{out}} \sim 0.4c$). Based on lamppost
disc reflection models, we find evidence that the central supermassive black
hole is rapidly rotating ($a > 0.77$), consistent with previous estimates from
the profile of the relativistic iron line, and that the accretion disc is
viewed at a fairly high inclination ($i \sim 59^{\circ}$). Based on extensive
simulations, we find the ultrafast outflow is detected at $\sim$4$\sigma$
significance (or greater). We also estimate that the extreme outflow should be
sufficient to power galaxy-scale feedback, and may even dominate the energetics
of the total output from the system.
Volume
484
Issue
2
Start page
2544
Issn Identifier
0035-8711
Ads BibCode
2019MNRAS.484.2544W
Rights
open.access
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