Evolution of the accretion disc around the supermassive black hole of NGC 7213

Schimoia, J. S.; Storchi‐Bergmann, Thaisa; Winge, Cláudia; Nemmen, R.; Eracleous, Michael

doi:10.1093/mnras/stx2107

Cited by 19 publications

(17 citation statements)

References 29 publications

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“…(2020) , although a disk-like rather than shell-like geometry is preferred for C IV and Lyα. There is also evidence in the reverberation response for the presence of an azimuthal structure orbiting on the far side of the C IV and Lyα BLR during the monitoring period, as has been seen in several double-peaked AGNs ( Gezari et al., 2007 ; Lewis et al., 2010 ; Schimoia et al., 2015 , 2017 ).…”

Section: Broad Line Region Reverberationmentioning

confidence: 63%

Reverberation mapping of active galactic nuclei: From X-ray corona to dusty torus

2021

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Summary The central engines of active galactic nuclei (AGNs) are powered by accreting supermassive black holes, and while AGNs are known to play an important role in galaxy evolution, the key physical processes occur on scales that are too small to be resolved spatially (aside from a few exceptional cases). Reverberation mapping is a powerful technique that overcomes this limitation by using echoes of light to determine the geometry and kinematics of the central regions. Variable ionizing radiation from close to the black hole drives correlated variability in surrounding gas/dust but with a time delay due to the light travel time between the regions, allowing reverberation mapping to effectively replace spatial resolution with time resolution. Reverberation mapping is used to measure black hole masses and to probe the innermost X-ray emitting region, the UV/optical accretion disk, the broad emission line region, and the dusty torus. In this article, we provide an overview of the technique and its varied applications.

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Section: Broad Line Region Reverberationmentioning

confidence: 63%

Reverberation mapping of active galactic nuclei: From X-ray corona to dusty torus

2021

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“…While the details vary from object to object, there are similarities as well: the 2020), although a disk-like rather than shell-like geometry is preferred for C IV and Lyα. There is also evidence in the reverberation response for the presence of an azimuthal structure orbiting on the far side of the C IV and Lyα BLR during the monitoring period, as has been seen in several double-peaked AGNs (Gezari et al, 2007;Lewis et al, 2010;Schimoia et al, 2015Schimoia et al, , 2017).…”

Section: Mapping the Blrmentioning

confidence: 62%

Reverberation mapping of Active Galactic Nuclei: from X-ray corona to dusty torus

Cackett,

Bentz,

Kara

2021

Preprint

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The central engines of Active Galactic Nuclei (AGNs) are powered by accreting supermassive black holes, and while AGNs are known to play an important role in galaxy evolution, the key physical processes occur on scales that are too small to be resolved spatially (aside from a few exceptional cases). Reverberation mapping is a powerful technique that overcomes this limitation by using echoes of light to determine the geometry and kinematics of the central regions.Variable ionizing radiation from close to the black hole drives correlated variability in surrounding gas/dust, but with a time delay due to the light travel time between the regions, allowing reverberation mapping to effectively replace spatial resolution with time resolution. Reverberation mapping is used to measure black hole masses and to probe the innermost X-ray emitting region, the UV/optical accretion disk, the broad emission line region and the dusty torus.In this article we provide an overview of the technique and its varied applications.

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“…In addition to the double-peaked feature, some galaxies also need a central broad component in order to fit the pro-file of the Hα line (Strateva et al 2003;Shields et al 2000;Storchi-Bergmann et al 2017;Schimoia et al 2017). This is clearly the case of NGC 4958.…”

Section: Discussionmentioning

confidence: 99%

Detection of a double-peaked H α component from the accretion disc of NGC 4958

Ricci

Steiner

2019

Monthly Notices of the Royal Astronomical Society

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Active Galactic Nuclei are objects associated with the presence of an accretion disc around supermassive black holes found in the very central region of galaxies with a well-defined bulge. In the optical range of the spectrum, a possible signature of the accretion disc is the presence of a broad double-peaked component that is mostly seen in Hα. In this paper, we report the detection of a double-peaked feature in the Hα line in the nucleus of the galaxy NGC 4958. The narrow line region of this object has an emission that is typical of a LINER galaxy, which is the usual classification for doublepeaked emitters. A central broad component, related to the broad line region (BLR) of this object, is seen in Hα and also in Hβ. We concluded that the double-peaked emission is emitted by a circular relativistic Keplerian disc with an inner radius ξ i = 570± 83, an outer radius ξ o = 860±170 (both in units of GM SMBH /c 2 ), an inclination to the line of sight i = 27.2 • ±0.7 • and a local broadening parameter σ = 1310±70 km s −1 .

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Evolution of the accretion disc around the supermassive black hole of NGC 7213

Cited by 19 publications

References 29 publications

Reverberation mapping of active galactic nuclei: From X-ray corona to dusty torus

Reverberation mapping of active galactic nuclei: From X-ray corona to dusty torus

Reverberation mapping of Active Galactic Nuclei: from X-ray corona to dusty torus

Detection of a double-peaked H α component from the accretion disc of NGC 4958

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