4.7 Article

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

期刊

出版社

OXFORD UNIV PRESS
DOI: 10.1093/mnras/staa482

关键词

accretion, accretion discs; black hole physics; galaxies: Seyfert

资金

  1. ERC Advanced Grant FEEDBACK [340442]
  2. Tsinghua Astrophysics Outstanding Fellowship
  3. Tsinghua Shuimu Scholar Programme
  4. Cambridge Trust
  5. Chinese Scholarship Council [201604100032]
  6. UK Science and Technology Facilities Council (STFC) [ST/R000867/1]
  7. European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme [834203]
  8. STFC
  9. European Union's Horizon 2020 Research and Innovation Programme under the Marie Sklodowska-Curie grant [798726]
  10. Spanish State ResearchAgency (AEI) Project [ESP2017-86582-C4-1-R, MDM-2017-0737]
  11. STFC [ST/N004027/1, ST/M005283/2, ST/S000623/1, ST/R000867/1] Funding Source: UKRI

向作者/读者索取更多资源

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 similar to 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 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 blueshifted side of which dominates the flux due to relativistic aberration (the disc inclination is about 70 degrees). No fast outflow need occurs beyond the disc.

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