J/A+A/702/A10ivo://CDS.VizieR/J/A+A/702/A10doi:10.26093/cds/vizier/bc-ny/lbaCDSBehiri M.. Mahony E.Sadler E.Kerrison E.Traina A.Zanchettin M.V.,Galluzzi V.Lapi A.Massardi M.2026-08-03T06:57:37Z2025-09-26T10:43:55ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frbl-lacertae-objectsquasarsgamma-ray-astronomyradio-sourcesThis work investigates the multi-wavelength properties of 165 sources from the Fermi Large Area Telescope Fourth Source Catalog Data Release 4 (4FGL), with the aim of identifying counterparts in the Australian SKA Pathfinder (ASKAP) First Large Absorption Survey in the HI (FLASH) continuum. Using high-resolution data from FLASH, complementary radio datasets, and archival ALMA observations, we performed detailed spectral energy distribution (SED) analyses across centimetre to millimetre wavelengths. Our findings reveal that most blazars exhibit re-triggered peaked spectra, which are indicative of emission dominated by a single emitting region. Additionally, we identify strong correlations between radio and gamma-ray luminosities, highlighting the significant role of relativistic jets in these active galactic nuclei. The inclusion of spectroscopic redshifts from the Sloan Digital Sky Survey and Gaia enabled a comprehensive analysis of the evolutionary trends and physical characteristics of the sources to be performed. Furthermore, we report a tight radio-X-ray correlation for flat spectrum radio quasars, thus contrasting with the more scattered behaviour observed in BL Lacertae objects and reflecting the distinct accretion and jet-driving mechanisms of the two populations. These results provide critical insights into the physics of blazars and their environments, paving the way for future studies with next-generation facilities such as the SKA Observatory for radio observations and the Cherenkov Telescope Array for gamma-ray studies.2025A&A...702A..10Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/702/A10CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/247/33 : The Fermi LAT fourth source catalog (4FGL) (Abdollahi+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/702/A10https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/702/A10http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/702/A10https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/702/A10https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/702/A10http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/702/A10GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/702/A10/tablea1 (Radio and gamma-ray properties of blazars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/702/A10/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/702/A10/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/702/A10/tablea1?GETtext/xml+votable180.050000true5.63766.13430.0055555555555555566/8299 8339 8432 12289 16440 16444 16447 16532 16534 16578 16736 16740 17414 17516 17519 17522 17529 17617 17665 17683 17701 17711 17745 17798 17819-17820 17825 17842-17843 18046 18109 18210 18219 18315 18341 18718 18763 18766 18889 19523 19525 20481 20523 20547 20577 20610-20611 20657 20659 20674 20680 20696 21061 21073 21185-21186 21217 21280 23096 23099 23181 23208 23215 23222 23226 25910 25954 25990 26001 26056 27310-27311 27420 27423 27433 27442 27523 27689 27704 27710 30012 30036 30039 30041 30050 30160 30874 30909 31296 33501 33528 33583 33609 33670 33678 34051 34085-34086 34128 34317-34318 34478 34900 35074 35119 35208 35227 35252 35274 35439 35441 35535 35542 35547 35549 35630 35722 35885 36155 36230 36251 36255 36278 36284 36296 36460 36471 36529 36548-36549 36554 36556 36736 36747 36770 36777 36798 36840 36842 39467 39570 39600 40162 40174 40479 40949 45897 46723 46761 46764 47375 47398 48245 48398 48419 49142https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/702/A10?format=asciiGamma-rayRadiodefaultJ/A+A/702/A10/tablea1Radio and gamma-ray properties of blazarsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name in 4FGL format (4FGLJHHMM.m+DDMM)meta.id;meta.maincharz? Redshiftsrc.redshiftfloatnullableL885MHz? Rest-frame 885MHz radio luminosityW/Hzphys.luminosity;em.radio.750-1500MHzdoublenullablenu-peak-rest? Rest-frame spectral peak frequencyGHzem.freqfloatnullablenu-trough-rest? Rest-frame spectral trough frequencyGHzem.freqfloatnullablealpha-retrig? Low-frequency spectral index (retrig. sources) (1)spect.indexfloatnullablealpha-thick? Spectral index in optically thick regime (1)spect.indexfloatnullablealpha-thin? Spectral index in optically thin regime (1)spect.indexfloatnullableLFermi? Gamma-ray luminosity (2)W/Hzphys.luminosity;em.gammadoublenullableBestFitBest-fit spectral classification (3)meta.code.classcharSimbadNameSimbad column added by the CDSmeta.idcharnullable_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main