Table · dataset · 2023
Hot corona properties of Swift/BAT-detected AGNs
Listed in IVOA Registry (Virtual Observatory)
Using a sample of 208 broad-line active galactic nuclei (AGNs) from the Swift/BAT AGN Spectroscopic Survey in the ultra-hard X-ray band (14-195keV), the hot corona properties are investigated, i.e. the fraction of gravitational energy dissipated in the hot corona and the hard X-ray photon index.
Description
The bolometric luminosity, L_Bol_, is calculated from host-corrected luminosity at 5100{AA}. Virial supermassive black-hole masses (SMBH, M_BH_) are calculated from the H{beta} line width and the corresponding broad-line region size-luminosity empirical relation at 5100{AA}.
We find a strong anti-correlation between the fraction of energy released in corona (F_X_=L_14-195keV_/L_Bol_) and the Eddington ratio ({epsilon}=L_Bol_/L_Edd_), F_X_{prop.to}{epsilon}^-0.60+/-0.1^. It is found that this fraction also has a correlation with the SMBH mass, F_X_{prop.to}{epsilon}^-0.74+/-0.14^M_BH_^-0.30+/-0.03^. Assuming that magnetic buoyancy and field reconnection lead to the formation of a hot corona, our result favours the shear stress tensor being a proportion of the gas pressure.
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For our entire sample, it is found that the hard X-ray photon index {Gamma} has a weak but significant correlation with the Eddington ratio, {Gamma}=2.17+0.21log{epsilon}. However, this correlation is not robust because the relation is not statistically significant for its subsample of 32 reverberation-mapping AGNs with relatively reliable M_BH_ or its subsample of 166 AGNs with single-epoch M_BH_. We do not find a statistically significant relation between the photon index and the Eddington ratio taking into account an additional dependence on F_X_.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/487/2463 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2019MNRAS.487.2463W ui.adsabs.harvard.edu/abs/2019MNRAS.487.2463W ↗
publication · from IVOA Registry
Catalogue records · 2
- VOResource record dc.g-vo.org/oai.xml?verb=GetRecord&metadataPrefix=ivo_vor&identifier=ivo%3… ↗
metadata API · from IVOA Registry
- Registry record (GAVO) dc.g-vo.org/I/cds.vizier/j/mnras/487/2463 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- X-Ray
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/mnras/487/2463 | 14 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].local:field:astronomy | mapping · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:x-ray | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| description | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_description |
| license_text | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| publication_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| title | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_title |
| updated_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 |