Detection of a possible multiphase ultra-fast outflow in IRAS 13349+2438 with NuSTAR and XMM-Newton

Abstract

We present joint NuSTAR and XMM-Newton observations of the bright, variable quasar IRAS 13349+2438. This combined dataset 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$\alpha$ 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.

5 pages, 2 figures, accepted for publication in MNRAS letters

References in corpus (6)

• The response of relativistic outflowing gas to the inner accretion disk of a black hole
• Magnetically-Driven Accretion-Disk Winds and Ultra-Fast Outflows in PG1211+143
• Searching for Ultra-fast Outflows in AGN using Variability Spectra
• Using principal component analysis to understand the variability of PDS 456
• X-ray flaring in PDS 456 observed in a high-flux state
• Blueshifted absorption lines from X-ray reflection in IRAS 13224-3809

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• The lively accretion disc in NGC 2992. III. Tentative evidence of rapid Ultra Fast Outflow variability
• The stratified disk wind of MCG-03-58-007
• Modelling X-ray RMS spectra II: the ultra-fast outflow of PDS 456
• Constraining black hole spin in PG 1535+547 amidst complex multi-layered absorption
• Evidence for a moderate spin from X-ray reflection of the high-mass supermassive black hole in the cluster-hosted quasar H1821+643
• Unravelling the origin of extended radio emission in narrow-line Seyfert 1 galaxies with the JVLA
• Winds Versus Jets in Active Galactic Nuclei