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Wind-luminosity evolution in NLS1 AGN 1H 0707−495
- Source :
- Monthly Notices of the Royal Astronomical Society, Monthly Notices of the Royal Astronomical Society, 2021, 508 (4), pp.6049-6067. ⟨10.1093/mnras/stab2984⟩, Mon.Not.Roy.Astron.Soc., Mon.Not.Roy.Astron.Soc., 2021, 508 (4), pp.6049-6067. ⟨10.1093/mnras/stab2984⟩
- Publication Year :
- 2021
- Publisher :
- Oxford University Press (OUP), 2021.
-
Abstract
- Ultra-fast outflows (UFOs) have been detected in the high-quality X-ray spectra of a number of active galactic nuclei (AGN) with fairly high accretion rates and are thought to significantly contribute to the AGN feedback. After a decade of dedicated study, their launching mechanisms and structure are still not well understood, but variability techniques may provide useful constraints. In this work, therefore, we perform a flux-resolved X-ray spectroscopy on a highly accreting and variable NLS1 AGN, 1H 0707-495, using all archival XMM-Newton observations to study the structure of the UFO. We find that the wind spectral lines weaken at higher luminosities, most likely due to an increasing ionization parameter as previously found in a few similar sources. Instead, the velocity is anticorrelated with the luminosity, which is opposite to the trend observed in the NLS1 IRAS 13224-3809. Furthermore, the detection of the emission lines, which are not observed in IRAS 13224-3809, indicates a wind with a larger opening angle in 1H 0707-495, presumably due to a higher accretion rate. The emitting gas is found to remain broadly constant with the luminosity. We describe the variability of the wind with a scenario where the strong radiation extends the launch radius outwards and shields the outer emitting gas, similarly to super-Eddington compact objects, although other possible explanations are discussed. Our work provides several hints for a multi-phase outflow in 1H 0707-495.<br />Comment: 20 pages, 9 figures, accepted for publication in MNRAS
- Subjects :
- Active galactic nucleus
Astrophysics::High Energy Astrophysical Phenomena
black hole physics
FOS: Physical sciences
Astrophysics::Cosmology and Extragalactic Astrophysics
Astrophysics
01 natural sciences
Spectral line
Luminosity
accretion
Ionization
0103 physical sciences
Astrophysics::Solar and Stellar Astrophysics
Emission spectrum
010303 astronomy & astrophysics
Astrophysics::Galaxy Astrophysics
High Energy Astrophysical Phenomena (astro-ph.HE)
Physics
Accretion (meteorology)
010308 nuclear & particles physics
Astronomy and Astrophysics
Radius
accretion discs
galaxies: Seyfert
Space and Planetary Science
X-rays: individual: 1H 0707−495
Outflow
Astrophysics - High Energy Astrophysical Phenomena
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Subjects
Details
- ISSN :
- 13652966 and 00358711
- Volume :
- 508
- Database :
- OpenAIRE
- Journal :
- Monthly Notices of the Royal Astronomical Society
- Accession number :
- edsair.doi.dedup.....f0cbba11af2180b2e0b11788241d6af3