Table · dataset · 2023
Fermi blazar jet properties
Listed in IVOA Registry (Virtual Observatory)
The origin of jets is one of the most important issues concerning active galactic nuclei, yet it has remained obscure.
Description
In this work, we made use of information from emission lines, spectral energy distributions, and Fermi-LAT {gamma}-ray emission to construct a blazar sample that contains 667 sources. We note that jet power originations are different for BL Lacertae objects (BL Lacs) and flat-spectrum radio quasars (FSRQs).
The correlation between jet power P_jet_ and the normalized disk luminosity L_Disk_/L_Edd_ shows a slope of -1.77 for BL Lacs and a slope of 1.16 for FSRQs. The results seem to suggest that BL Lac jets are powered by extracting black hole (BH) rotation energy, while FSRQ jets are mostly powered by accretion disks. Meanwhile, we find the accretion ratio (dM/dt)/(dM/dt)_Edd_ increases with the normalized {gamma}-ray luminosity.
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Based on this, we propose a dividing line, log(L_BLR_/L_Edd_)=0.25log(L_{gamma}_/L_Edd_)-2.23, to separate FSRQs and BL Lacs in the diagram of L_BLR_/L_Edd_ against L_{gamma}_/L_Edd_ using a machine-learning method; the method gives an accuracy of 84.5%. In addition, we propose an empirical formula, M_BH_/M_{sun}_~L_{gamma}_^0.65^/21.46, to estimate BH mass based on a strong correlation between {gamma}-ray luminosity and BH mass.
Strong {gamma}-ray emission is typical in blazars, and the emission is always boosted by a Doppler-beaming effect. In this work, we generate a new method to estimate a lower limit of Doppler factor {delta} and give {delta}_BLLac_=7.94 and {delta}_FSRQ_=11.55.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/925/40 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2022ApJ...925...40X ui.adsabs.harvard.edu/abs/2022ApJ...925...40X ↗
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/apj/925/40 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Gamma-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/apj/925/40 | 12 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:gamma-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 |