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

@article{Fabian2020BlueshiftedAL,
  title={Blueshifted absorption lines from X-ray reflection in IRAS 13224−3809},
  author={Andrew C. Fabian and Christopher S. Reynolds and J. Jiang and Ciro Pinto and Luigi C. Gallo and Michael L. Parker and Anthony N. Lasenby and William N. Alston and Douglas J. K. Buisson and Edward M. Cackett and Barbara De Marco and J. Garcia and Erin Kara and Peter Kosec and Matthew J. Middleton and Judith McCoy Miller and Giovanni Miniutti and Dominic J. Walton and Dan R Wilkins and Andrew R. J. Young},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2020},
  volume={493},
  pages={2518-2522}
}
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 IRAS 13224−3809. The blueshift corresponds to a velocity of ∼0.25c. Such features in other active galactic nuclei are often interpreted as ultrafast outflows. The velocity is of course present in the orbital motions of the inner disc. The absorption lines in IRAS 13224−3809 are best seen when the flux is low and the reflection component of the disc is… Expand

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References

SHOWING 1-10 OF 24 REFERENCES
The origin of blueshifted absorption features in the X-ray spectrum of PG 1211+143: outflow or disc.
In some radio-quiet active galaxies (AGN), high-energy absorption features in the x-ray spectra have been interpreted as Ultrafast Outflows (UFOs) -- highly ionised material (e.g. Fe XXV and Fe XXVI)Expand
Resolved atomic lines reveal outflows in two ultraluminous X-ray sources
TLDR
It is concluded that the compact object in each source is surrounded by powerful winds with an outflow velocity of about 0.2 times that of light, as predicted by models of accreting supermassive black holes and hyper-accreting stellar-mass black holes. Expand
The 1.5 Ms observing campaign on IRAS 13224-3809 - I. X-ray spectral analysis
We present a detailed spectral analysis of the recent 1.5 Ms XMM–Newton observing campaign on the narrow-line Seyfert 1 galaxy IRAS 13224−3809, taken simultaneously with 500 ks of NuSTAR data. TheExpand
A COMPTON-THICK WIND IN THE HIGH-LUMINOSITY QUASAR, PDS 456
TLDR
It is proposed that the iron K-shell absorption in PDS 456 is associated with a thick, possibly clumpy outflow, covering about 20% of 4π steradian solid angle, which is likely launched from the inner accretion disk, within 15-100 gravitational radii of the black hole. Expand
How the effects of resonant absorption on black hole reflection spectra can mimic high-velocity outflows
Narrow absorption lines seen in the 2–10 keV spectra of active galaxies and Galactic black holes are normally attributed to iron in high-velocity outflows or inflows. We consider the possibility thatExpand
X-Ray Iron Line Reverberation from Black Hole Accretion Disks
The relativistically broad X-ray iron line seen in many active galactic nucleus (AGN) spectra is thought to originate from the central regions of the putative black hole accretion disk. Both the lineExpand
X-ray iron line reverberation from black hole accretion disks
The relativistically broad X-ray iron line seen in many AGN spectra is thought to originate from the central regions of the putative black hole accretion disk. Both the line profile and strength willExpand
Unification of X-ray winds in Seyfert galaxies: from ultra-fast outflows to warm absorbers
The existence of ionized X-ray absorbing layers of gas along the line of sight to the nuclei of Seyfert galaxies is a well established observational fact. This material is systematically outflowingExpand
Evidence for ultra-fast outflows in radio-quiet AGNs - I. Detection and statistical incidence of Fe K-shell absorption lines
Context. Blue-shifted Fe K absorption lines have been detected in recent years between 7 and 10 keV in the X-ray spectra of several radio-quiet AGNs. The derived blue-shifted velocities of the linesExpand
Revealing the ultrafast outflow in IRAS 13224-3809 through spectral variability
We present an analysis of the long-term X-ray variability of the extreme narrow-line Seyfert 1 (NLS1) galaxy IRAS 13224-3809 using principal component analysis (PCA) and fractional excess variabilityExpand
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