Study of relativistic jets in blazar objets

DOI

Our understanding of the unification of jetted AGN has evolved greatly as jet samples have increased in size. Here, based on the largest-ever sample of over 2000 well-sampled jet spectral energy distributions, we examine the synchrotron peak frequency - peak luminosity plane, and find little evidence for the anticorrelation known as the blazar sequence. Instead, we find strong evidence for a dichotomy in jets, between those associated with efficient or 'quasar- mode' accretion (strong/type II jets) and those associated with inefficient accretion (weak/type I jets). Type II jets include those hosted by high-excitation radio galaxies, flat-spectrum radio quasars (FSRQ), and most low-frequency-peaked BL Lac objects. Type I jets include those hosted by low- excitation radio galaxies and blazars with synchrotron peak frequency above 1015 Hz (nearly all BL Lac objects). We have derived estimates of the total jet power for over 1000 of our sources from low-frequency radio observations, and find that the jet dichotomy does not correspond to a division in jet power. Rather, type II jets are produced at all observed jet powers, down to the lowest levels in our sample, while type I jets range from very low to moderately high jet powers, with a clear upper bound at L_300MHz_ ~ 10^43^ erg/s. The range of jet power in each class matches exactly what is expected for efficient (i.e. a few to 100 % Eddington) or inefficient (< 0.5% Eddington) accretion on to black holes ranging in mass from 10^7^M_{sun} to 10^9.5^M{sun}_.

Cone search capability for table J/MNRAS/505/4726/table6 ('Trusted Extended (TEX) sample' radio properties)

Cone search capability for table J/MNRAS/505/4726/tableb1 ('Unknown Extended (UEX) sample' radio and broad-band properties)

Identifier
DOI http://doi.org/10.26093/cds/vizier.75054726
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/MNRAS/505/4726
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/505/4726
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/505/4726
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/MNRAS/505/4726
Provenance
Creator Keenan M.; Meyer E.T.; Georganopoulos M.; Reddy K.; French O.J.
Publisher CDS
Publication Year 2024
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Cosmology; Galactic and extragalactic Astronomy; High Energy Astrophysics; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy