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Title: Detection of a possible multiphase ultra-fast outflow in IRAS 13349+2438 with NuSTAR and XMM-Newton.
Authors: Parker, M. L.
Matzeu, G. A.
Alston, W. N.
Fabian, A. C.
Lobban, A.
Miniutti, G.
Pinto, C.
Santos Lleó, M.
Schartel, N.
Keywords: Accretion;Accretion Disc;Black Hole Physics;Galaxies: active
Issue Date: 25-Aug-2020
Publisher: Oxford Academics: Blackwell Publishing
DOI: 10.1093/mnrasl/slaa144
Published version:
Citation: Monthly Notices of the Royal Astronomical Society: Letters 498(1): L140-L144(2020)
Abstract: We present joint NuSTAR and XMM–Newton observations of the bright, variable quasar IRAS 13349+2438. This combined data set shows two clear iron absorption lines at 8 and 9 keV, which are most likely associated with two layers of mildly relativistic blueshifted absorption, with velocities of ∼0.14c and ∼0.27c. We also find strong evidence for a series of Ly α absorption lines at intermediate energies in a stacked XMM–Newton EPIC-pn spectrum, at the same blueshift as the lower velocity iron feature. This is consistent with a scenario where an outflowing wind is radially stratified, so faster, higher ionization material is observed closer to the black hole, and cooler, slower material is seen from streamlines at larger radii.
Description: This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (
E-ISSN: 1745-3933
ISSN: 1745-3925
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