Blueshifted absorption lines from X-ray reflection in IRAS 13224-3809

Abstract

We explore a disc origin for the highly-blueshifted, variable absorption lines seen in the X-ray spectrum of the Narrow Line Seyfert 1 galaxy IRAS13224-3809. The blueshift corresponds to a velocity of about 0.25c. Such features in other Active Galactic Nuclei are often interpreted as UltraFast Outflows (UFOs). The velocity is of course present in the orbital motions of the inner disk. The absorption lines in IRAS13224-3809 are best seen when the flux is low and the reflection component of the disk is strong relative to the power-law continuum. The spectra are consistent with a model in which the reflection component passes through a thin, highly-ionized absorbing layer at the surface of the inner disc, the blue-shifted side of which dominates the flux due to relativistic aberration (the disc inclination is about 70 deg). No fast outflow need occur beyond the disc.

6 pages, 5 figures, accepted for publication in MNRAS

References in corpus (4)

• A Compton-thick Wind in the High Luminosity Quasar, PDS 456
• The response of relativistic outflowing gas to the inner accretion disk of a black hole
• An Iron K Component to the Ultrafast Outflow in NGC 1313 X-1
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Cited by in corpus (6)

• Detection of a variable ultra-fast outflow in the Narrow Line Seyfert 1 galaxy PG 1448+273
• XMM-Newton Observations of the Narrow-Line Seyfert 1 Galaxy IRAS 13224$-$3809 : X-ray Spectral Analysis II
• Ejection-accretion connection in NLS1 AGN 1H 1934-063
• Detection of a possible multiphase ultra-fast outflow in IRAS 13349+2438 with NuSTAR and XMM-Newton
• The Awakening Beast in the Seyfert 1 Galaxy KUG 1141+371 I
• Wind-luminosity evolution in NLS1 AGN 1H 0707-495