J/MNRAS/496/245ivo://CDS.VizieR/J/MNRAS/496/245doi:10.26093/cds/vizier.74960245CDSZhu S.F.Brandt W.N.Luo B.Wu J.Xue Y.Q.Yang G.2024-08-21T20:15:17Z2023-09-18T14:52:25ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleiblack-holesquasarsredshiftedvisible-astronomyultraviolet-astronomyx-ray-sourcesradio-sourcesRadio-loud quasars (RLQs) are more X-ray luminous than predicted by the X-ray-optical/UV relation (i.e. L_x_{prop.to}L_uv_^{gamma}^) for radio-quiet quasars (RQQs). The excess X-ray emission depends on the radio-loudness parameter (R) and radio spectral slope ({alpha}_r_). We construct a uniform sample of 729 optically selected RLQs with high fractions of X-ray detections and {alpha}_r_ measurements. We find that steep-spectrum radio quasars (SSRQs; {alpha}_r_=<-0.5) follow a quantitatively similar L_x_{prop.to}L_uv_^{gamma}^ relation as that for RQQs, suggesting a common coronal origin for the X-ray emission of both SSRQs and RQQs. However, the corresponding intercept of SSRQs is larger than that for RQQs and increases with R, suggesting a connection between the radio jets and the configuration of the accretion flow. Flat-spectrum radio quasars (FSRQs; {alpha}_r_>-0.5) are generally more X-ray luminous than SSRQs at given L_uv_ and R, likely involving more physical processes. The emergent picture is different from that commonly assumed where the excess X-ray emission of RLQs is attributed to the jets. We thus perform model selection to compare critically these different interpretations, which prefers the coronal scenario with a corona-jet connection. A distinct jet component is likely important for only a small portion of FSRQs. The corona-jet, disc-corona, and disc-jet connections of RLQs are likely driven by independent physical processes. Furthermore, the corona-jet connection implies that small-scale processes in the vicinity of supermassive black holes, probably associated with the magnetic flux/topology instead of black hole spin, are controlling the radio-loudness of quasars.2020MNRAS.496..245Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/496/245CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/154 : Sloan Digital Sky Surveys (SDSS), Release 16 (DR16)VIII/92 : The FIRST Survey Catalog, Version 2014Dec17 (Helfand+ 2015)VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)J/ApJ/726/20 : X-ray emission from quasars (Miller+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/496/245https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/496/245http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/496/245https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/496/245https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/496/245http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/496/245GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/496/245/table2 (Properties of optically selected RLQs utilized in the paper, in ascending order of RA)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/496/245/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/496/245/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/496/245/table2?GETtext/xml+votable180.050000true1.17578640.00648720.0055555555555555565/4501 6/4096 4099 4163 4168 4262 4285 4298 4303 4313 4324 4326-4327 4348 4391 4397 4438 4447-4448 4504 4533 4536 4577 4638 4651 4670 4689 4715 4720 4736 4748 4750 4758 4772 4786 4801 4804 4820 4831 4839 4850 4870 4921 4923 4947 4962 4964-4965 4977 4990 4992 5027 5069 5074 5080 5091 5098-5099 5102 5106 5135 5228-5229 5231 5244 5291 5299 5305 5311-5312 5351 5363 5394 5405 5420 5437 5439 5469 5482 5491 5504 5506 5509 5523 5535 5545 5569-5570 5584 5587-5588 5598 5610 5628 5630 5664 5666-5667 5672 5675 5685 5687-5689 5691 5718 5731 5749 5751 5762 5767 5781 5807 5816 5818 5825 5838 5844 5854 5860 5864 5881 5890 5894-5895 5902 5918 5927 5936 5988 5999-6000 6008 6021 6030 6033 6038 6046 6069 6071 6075 6077 6107 6111-6112 6115 6172 6193 6233 6251-6252 6399 6421 6428 6431 6448 6464 6467 6470 6494-6495 6499 6502 6532 6604 6623 6629 6638 6977 7168 7178 7181 7220 7236 7241 7245 7267 7278 7280-7281 7301 7328 7349 7351 7371 7381 7389 7424-7426 7446 7448 7477 7488 7496 7552 7554 8201 8220 8258 8265 8268 8271 8299 8347 8384 8458 8507 8524 8528 8553 8641 8650 8671 8681 8687 8705 8707 8710 8733 8740 8858 8906 8909 8922-8923 8927 8934 8969 9036 9069 9145-9146 9148 9150-9151 9181 9213 9252 9303 9328 9347 9353-9354 9373 9375 9379 9402 9428 9436 9457 9470 9481 9490 9512 9604 9613 9615 9618 9629 9632-9633 9642 9767 9821 9825 9831 9837 9842 9853 9863 9992 9997 9999 10002 10074 10116 10131 10137 10153 10189 10209 10211 10214 10221 10261 10271 10288 10292-10293 10305 10312 10314 10318 10321 10336-10338 10378-10379 10389-10391 10396 10400-10401 10420 10422 10434 10442 10449 10451 10464 10472 10486 10501 10512-10513 10515-10518 10529 10531 10544 10567 10571 10587 10589 10599 10602 10604 10611 10618 10657 10663-10664 10691 10700 10707 10751 10758 10761 10769 10788 10799 10802 10841 10844 10879 10904 10912 10963 10970 10977 10979 10982 10999 11017 11029 11100-11101 11104 11111-11112 11117 11127 11130 11147 11159 11179 11183 11185 11191 11214 11217 11237 11279 11290 11302 11311 11336 11373-11374 11388 11392 11430 11434 11460-11461 11467 11473 11476 11504 11566 11586 11589 11787 11793 11802 11807 11813 11911 17297 17492 17506 17666 17688 17695 17700 17708 17719 17741 17749 17755 17761 17765 17767 17804 17812 17817 17819 18009 18019 18022-18023 18028 18084 18089-18090 18110 18112 18153 18176 18184 18242 18526 18546 18627 18682 18780 18783 18796 18889 19021 19028 19035 19062 19091 21887 22364 22485 23210 25585 25906 25944 25956 25958 25969 25977 25990-25991 25996 26017 26022 26056 26103 26157 26175 26189 26195 26223 26245 26266 26269 26280 26292 26298 26302-26303 26316 26331 26365 26375 26421 26427 26446 26454 26499 26525 26596 26946 26967 26975 26990 27044 27049 27100 27216 27225 27235 27238 27241 27246 27258-27259 27305 27307 27310 27343 27382-27383 27392 27402 27423 27462 27474 27514 27520 27524 27537 27554 27617 27652 27676 27681 27714-27715 27718-27720 27728 27730 27736 27739 27742 27761-27763 27766 27803 27862 27906 27918 27929 27937 27941 27944 27948 27955 27963 27966 28032 28046-28047 28060 28075 28080 28083 28107 28123-28124 28126-28127 28138 28141 28154 28167 28173 28209 28245 28251 28275 28315 28352-28353 28355 28391 28393 28396-28397 28471 28476 28481 28492-28494 28496 28515 28517-28518 28560 28589 28609 28666 31354 31533 31535 31663 31668 32447 32500 36765 36779-36780 36782 36785 36793 36846 40957 45054 49106https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/496/245?format=asciiX-rayUVOpticalRadiodefaultJ/MNRAS/496/245/table2Properties of optically selected RLQs utilized in the paper, in ascending order of RAalphar? Radio spectral slopespect.indexfloatnullableSimbadNameSimbad column added by the CDSmeta.idcharnullablelogRLogarithm of the radio loudness parameter R (1)phys.luminosity;arith.ratiofloatXFlag[0/1] Indicates if the quasar is detected in X-rays (0:no, 1:yes)meta.codeintsd[0/1] Indicates if the X-ray observation is labelled serendipitous (2)meta.codecharspec[0/1] Indicates if the quasar is spectroscopically confirmed (3)meta.codecharcDRatio of the flux of the radio core over the total radio fluxphot.flux;arith.ratiofloat_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.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSDSS source designation (HHMMSS.ss+DDMMSS.s)meta.id;meta.maincharzRedshiftsrc.redshiftfloatimagi-band magnitudemagphot.mag;em.opt.IfloatlogL2500Logarithm of the rest-frame monochromatic luminosity at 2500{AA}log(1e-07W.Hz**-1)phys.luminosity;em.UVfloatlogL5GHzLogarithm of the rest-frame monochromatic luminosity at 5GHzlog(1e-07W.Hz**-1)phys.luminosity;em.radiofloatlogL2keVLogarithm of the rest-frame monochromatic luminosity at 2keVlog(1e-07W.Hz**-1)phys.luminosity;em.X-rayfloat