J/MNRAS/493/L54ivo://CDS.VizieR/J/MNRAS/493/L54doi:10.26093/cds/vizier.74939054CDSKovalev Y.Y.Zobnina D.I.Plavin A.V.Blinov D.2025-08-11T20:18:50Z2020-02-14T10:47:54ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleipolarimetrySignificant positional offsets of the value from 1 mas to more than 10mas were found previously between radio (VLBI) and optical (Gaia) positions of active galactic nuclei (AGNs). They happen preferentially parallel to the parsec-scale jet direction. AGNs with VLBI-to-Gaia offsets pointed downstream the jet are found to have favourably higher optical polarization, as expected if extended optical jets dominate in the emission and shift the Gaia centroid away from the physical nucleus of the source. Upstream offsets with the suggested domination of accretion discs manifest themselves through the observed low optical polarization. Direction of linear optical polarization is confirmed to preferentially align with parsec-scale jets in AGNs with dominant jets consistent with a toroidal magnetic field structure. Our findings support the disc-jet interpretation of the observed positional offsets. These results call on an intensification of AGN optical polarization monitoring programs in order to collect precious observational data. Taken together with the continued VLBI and Gaia observations, they will allow researchers to reconstruct detailed models of the disc-jet system in AGNs on parsec scales.2020MNRAS.493L..54Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/493/L54CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/493/L54https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/493/L54http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/493/L54https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/493/L54https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/493/L54http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/493/L54GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/493/L54/table2 (Properties of 1059 AGN with significant VLBI-Gaia offsets)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/493/L54/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/493/L54/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/493/L54/table2?GETtext/xml+votable180.050000true0.08499583-32.350342780.0055555555555555566/18 60 128 139 172 179-180 272 332 375 440 447 513 532 546 593 698 700 739 839 949 1007 1104 1217 1263 1521 1528 1546 1576 1622 1680 1699-1702 1708 1905 2055 2107 2142 2172 2201 2217 2221 2225 2228 2257 2280 2308 2330 2334 2397 2406 2414 2432 2435 2442 2448 2464 2470 2492 2549 2564 2605 2616 2619 2654 2671 2727 2768 2867 3072 3096 3208 3492 3569 3710 3784 3799 3839 3971 4027 4042 4118 4134 4170 4194 4223 4242 4323 4436 4463 4502 4516 4521 4524 4543 4566 4572 4587 4685 4696 4705 4746 4770 4805 4809 4830 4848 4865-4866 4940 5033 5035 5072 5087 5098 5154 5163 5167 5191 5200 5255 5271 5284 5306 5311-5312 5345 5361 5528 5574 5597 5614 5630 5637 5722 5767 5771 5801 5806-5807 5817 5836 5848 5867 5906 5918 5975 5984 6013 6015 6018 6033 6079 6099 6110 6115 6117 6164 6193 6202 6204 6212 6233-6234 6244 6252 6264 6267 6319 6377 6436 6494 6496 6498-6499 6515 6519 6532 6534 6548 6576 6628 6646 6686 6693 6723 6747 6755 6764 6774 6934 6951 6996 7005 7040 7057 7105 7192 7195 7230 7245 7296 7305 7351 7354 7371 7389 7410 7426 7436 7448 7472 7492 7530 7548 7570 7604 7606 7639 7644 7656 7689 7699 7741 7758 7857 7873 7882 7911 7932 7938 7942 8004 8042 8057 8065 8100 8123 8131 8161 8175 8177 8218 8220 8258 8283 8321 8327 8340 8345 8368 8424 8466 8468 8487 8526 8548 8577-8578 8580 8660 8691 8709 8716 8720 8746 8751 8799 8858 8868 8894 8912 8915 8918 8934 8972 9021 9073 9170 9196 9220 9270 9305 9316 9328 9357 9412 9442 9447 9452 9467-9468 9483 9497 9545 9566 9594 9612 9618 9633 9637 9655 9707 9711 9737 9836 9955 9961 9978 9986 10006 10019 10033 10060 10078 10103 10148 10156 10186 10198 10207 10237 10250 10288 10309 10321 10401 10432 10463 10524 10545 10548 10550 10563 10571 10595-10596 10634 10642 10695 10706 10715 10832 10836 10875 10910 10924-10925 10959 10969 10996 11024 11027 11037 11045 11094 11099 11117-11118 11143 11191 11203 11206 11209 11212 11226 11241 11246 11260 11274 11279 11346 11374 11388 11402 11408 11426 11514 11529 11556 11574 11631 11640 11686 11703 11714 11802 11833 11845 11921 11931 11936 11941 11978 12007 12047 12179 12185 12210 12241 12251 12264 12301 12421 12459 12547 12603 12619 12638 12640 12722 12835 12902 12921 12945 13156 13353 13359 13410 13499 13510 13545 13585 13625 13632 13705 13820 13867 13890-13891 13927 14379 14470 14520 14737 14795 14842 14858 14888 15023 15035 15100 15158 15211 15286 15305 15324 15433 15498 15536 15821 15916 15955 16049 16059 16093 16281 16298 16301 16318 16345 16444 16504 16539 16578 16584 16606 16696 16758 16765 16878 16962 17000 17048 17052 17186 17215 17223 17347 17364 17383 17388 17414 17488 17516 17529 17560 17574 17579 17617 17639 17642 17683 17693 17698 17730 17791 17798 17839 17857 17868 17877 17944 17965 17987 18002 18022 18037 18044 18066 18155 18208 18306 18343 18365 18402 18416 18436 18491 18506 18540 18661 18669 18683 18698 18739 18766 18769 18772 18787 18812 18824 18853 18868 18895 18967 19088 19101 19157 19189-19190 19197 19210 19253 19271 19308 19326 19398 19413 19435 19483 19487 19503 19553 19567 19589 19593 19601 19603 19609 19655 19724 19789 19831 19872 19940 19996 19999 20078 20095 20099 20144 20213 20224 20286 20304 20324-20325 20330 20357 20468-20469 20476 20577 20591 20607 20703 20883 20920 20929 20974 20976 20984 21010 21014 21087 21134 21188 21216 21266 21358 21385 21537 21704 21714 21724 21726 21758 21790 21793 21873 21924 21955 21968 21982 21987 21990 22014 22224 22239 22363 22386 22396-22397 22433 22490 22577 22629 22658-22659 22702-22703 22711 22754 22799 22829 22950 22980 22987 23022 23179 23223 23261 23304 23323 23364 23427 23476 23861 23913 23958 24041 24116 24140 24260 24349 24535 24608 24615 24661 24696 24759 24775 24801 24809 24828 24855 24881 24906 24941 24980 25016 25071 25112 25256 25307 25354 25374 25393 25427-25428 25458 25511 25542 25572 25630 25647 25673 25677-25678 25742 25757 25760 25781 25864 25907 25920 25985 26000 26003 26016 26027 26072-26073 26083 26095 26100 26131 26195 26203 26227 26240 26245 26292 26297 26322 26345 26363 26373-26374 26390 26446 26491 26547 26550 26614 26689 26755 26778 26833 26900 26966 26983-26984 27060 27078 27082 27100 27104 27156 27220 27290 27303 27413 27423 27448 27455 27514 27524 27580 27672 27700 27717 27722 27750 27765 27796 27814 27830 27832 27944-27945 27964 28043 28053 28083 28107-28108 28171 28216 28245 28249 28258 28268-28269 28293 28315 28415 28450 28492 28498 28517 28532 28538 28544 28618 28643 28673 28690 28736 28789 29017-29018 29039 29074 29218 29401-29402 29480 29570 29795 29982 30012 30041 30140 30195 30518 30573 30745 30842 30906 31005 31176 31190 31256 31274 31333 31399 31451 31461 31535 31599 31634 31995 32035 32185 32230 32345-32346 32348 32391 32451 32472-32473 32497 32527 32558 32580 32594 32605 32608 32621 32647 32764 34013 34095 34123 34264 34302 34461 34517 34534 34609 34637 34665 34669 34675 34931 35079 35309 35432 35581 35590 35624 35651 35696 35764 35769 35771 35786 35806 35945 36100 36123 36155 36211 36214 36230 36295-36296 36308 36343 36382 36417 36475 36528 36546 36549 36615 36625 36655 36665 36718 36814 36827 36857 37385 38128 38141 38277 38300 38311 38355 38397 38502 38646 38763 38769 38842 38886 39485 39489 39542 39544 39566 39636 39658 39664 39923 40060 40106 40141 40174 40197 40272 40281 40300 40331 40339 40344 40353 40382 40412 40458 40479 40503 40515 40635 40702 40710 40730 40766 40809 40811 40830-40831 40838 40874 40902 40915 41310 42814 42973 43257 43451 43483 43566 43595 43786 43822 43837 43900 43916 43936 43980 44028 44043 44075 44106 44122 44128 44149 44247 44269 44281 44335 44340 44358 44549 44554 44592 44600 44650 44705 44715 44776 44859 44902 44908 44944 45011 45446 46040 46459 46762 46810 46844 46851 46887 46932 46948 46964 46966 47028 47057 47375 47419 47534 47605 47900 47941 48023 48091 48123 48141 48187 48207 48245 48320 48388 48449 48496 48589 48595 48610 48618 48716 48719 48732 48805 48878 48965 48995 49002 49014 49070-49071 49141https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/493/L54?format=asciidefaultJ/MNRAS/493/L54/table2Properties of 1059 AGN with significant VLBI-Gaia offsetsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR2ID in Gaia DR2meta.id;meta.mainRAJ2000Gaia DR2 right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Gaia DR2 declination (J2000)pos.eq.dec;meta.mainRPmag? RP-magnitude in Gaia DR2magphot.mag;em.opt.RfloatnullableGmagG-magnitude in Gaia DR2magphot.mag;em.optfloatBPmag? BP-magnitude in Gaia DR2magphot.mag;em.opt.BfloatnullableJ2000J2000 name from RFCmeta.idcharPAjVLBI jet position angledegpos.posAngfloatoffsetOffset between VLBI and Gaia positionsmaspos;arith.diffdoublepsiVLBI-Gaia offset direction relative to jetdegpos;arith.difffloats_psiStandard deviation of VLBI-Gaia offset directiondegstat.stdev;pos.angDistance;arith.difffloatPolfrac? Optical polarization fractionphys.polarizationfloatnullablePolPA? Optical polarization position angledegpos.posAng;phys.polarizationfloatnullableBand[R V WL] Optical polarization measurement bandinstr.bandpasscharSimbadSimbad column added by the CDSmeta.ref.urlchar