J/A+A/707/A198ivo://CDS.VizieR/J/A+A/707/A198CDSShimwell T.W.Hardcastle M.J.Tasse C.Drabent A.Botteon A.,Williams W.L.Best P.N.Roettgering H.J.A.Brueggen M.Brunetti G.,Callingham J.R.Chyzy K.T.Conway J.E.De Gasperin F.Haverkorn M.,Horellou C.Jackson N.Miley G.K.Morabito L.K.Morganti R.,O'Sullivan S.P.Schwarz D.J.Smith D.J.B.van Weeren R.J.,Vedantham H.K.White G.J.Ahmadi A.Alegre L.Arias M.Asabere B.,Bahr-Kalus B.Barkus B.Bilicki M.Boehme L.Brentjens M.,Brienza M.Bomans D.J.Bonafede A.Bonato M.Bonnassieux E.,Boxelaar J.M.Camera S.Cassano R.Chilufya J.Cianfaglione M.,Croston J.H.Cuciti V.Dabhade P.De Rubeis E.de Jong J.M.G.H.J.,Dallacasa D.Dettmar R.J.Duncan K.J.Di Gennaro G.Edler H.W.,Groeneveld C.Guerkan G.Hajduk M.Hale C.L.Heesen V.Hoang D.N.,Hoeft M.Holties H.Horton M.A.Iacobelli M.Jamrozy M.Jarvis M.J.,Jelic V.Kadler M.Kondapally R.Kunert-Bajraszewska M.Loose M.,Magliocchetti M.Malek K.Manzano C.McKean J.P.Mevius M.Mingo B.,Miskolczi A.Misra A.Moldon J.Nair D.G.Nakoneczny S.J.Orru E.,Pashapour-Ahmadabadi M.Pasini T.Petley J.Pierce J.C.S.Prandoni I.,Rafferty D.Rajpurohit K.Riseley C.J.Roberts I.D.Sethi S.,Shulevski A.Stein M.Stuardi C.Sweijen F.ter Veen S.Timmerman R.,Vaccari M.Wijnholds S.2026-03-06T07:11:29Z2026-03-06T08:01:25ZCDS support team

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

cds-question@unistra.frsurveysradio-continuum-emissionWe present the third data release of the LOFAR Two-metre Sky Survey (LoTSS-DR3). The survey images cover 88% of the northern sky and were created from 12950 hrs of data (18.6 PB) accumulated over 10.5 years. Producing the images took 20 million core hours of processing through direction-independent and direction-dependent calibration pipelines that correct for instrumental effects as well as spatially and temporally varying ionospheric distortions. In our 120-168MHz continuum mosaic images with an angular resolution of 600 (900 below declination 10{deg}) we catalogue 13667877 sources, formed from 16,943,656 Gaussian components. The scatter in the astrometric precision approximately follows the expected noise-like behaviour but with an additional systematic component of at least 0.2400 that is likely due to calibration imperfections. The random flux density scale error is 6%, while the systematic offset was previously shown to be within 2%. The median sensitivity of our mosaics is 92mJy/beam, improving to 68mJy/beam at high observing elevations, but degrading to 183mJy/beam at the celestial equator due to station area projection effects. Completeness simulations, accounting for realistic source models, time- and bandwidth-smearing effects, and astrometric errors, indicate that we detect more than 95% of compact sources with integrated flux densities exceeding 9 times the local root mean square (RMS) noise. However, the recovered source counts in a particular integrated flux density bin do not match the injected counts until flux densities exceed 45 times the local RMS noise. The Euclidean-normalised differential source counts derived from the survey constrain the radio source population over five orders of magnitude and are in good agreement with previous deep and wide-area surveys. All data products are publicly available, including catalogues, individual-field Stokes I, Q, U, and V images, mosaicked Stokes I images, and uv data with associated direction-dependent calibration solutions.2026A&A...707A.198Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/707/A198CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/622/A1 : LOFAR Two-metre Sky Survey DR1 source catalog (Shimwell+, 2019)J/A+A/659/A1 : LOFAR Two-metre Sky Survey (LoTSS) DR2 (Shimwell+, 2022)https://lofar-surveys.org : LOFAR surveys home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/707/A198https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/707/A198http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/707/A198https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/707/A198https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/707/A198http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/707/A198GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/707/A198/lotssdr3 (Raw radio component catalogue of LoTSS-DR3)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/707/A198/lotssdr3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/707/A198/lotssdr3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/707/A198/lotssdr3?GETtext/xml+votable180.050000true2.9009e-0537.227716747170.0055555555555555560/2 1/0 4-5 7 19 2/7-10 13 25 27 49 52 62 71 75 91 107 110-111 126-127 3/16 18 20 22-24 26-27 44 48-49 51 57 63 96-97 99 105-107 192-193 195 203-206 212-214 216-217 224-225 232 234-235 237-239 254-255 279 283 295 299 343 348-349 351 359 363 407 412-413 415 423 427 434 439 478 485 491 494-495 498-499 4/70 86-87 102-103 180 184-185 188 200 225 227 235 237-238 240-242 244-245 247 392-393 395 417 419 776-777 779 805 807 810-811 828-829 860-862 872-873 875 877 880-882 888 890 906 912-914 932 934-935 945-947 962 971 973-976 1011 1013-1015 1109-1111 1113-1115 1125-1127 1129-1131 1173-1175 1177-1179 1189-1191 1193-1195 1365-1367 1369-1371 1391 1400-1401 1403 1433-1435 1445-1447 1449-1451 1485 1489-1490 1492-1493 1495-1496 1501 1512 1514 1527 1531-1533 1535 1621-1623 1625-1627 1637-1639 1641-1646 1656-1657 1659 1685-1687 1689-1691 1701-1703 1705-1707 1728 1730 1742-1743 1748-1749 1751 1754-1755 1877 1879 1894-1895 1898 1900-1901 1906 1918-1919 1958-1959 1961-1963 1971 1974-1975 1984 1986-1987 1990 2000-2001 2004-2005 2007 2010-2011 5/272 274-275 304 319 336-338 341-343 402 405-407 724 728 730-731 734-735 744-745 756-758 804-805 808 813-815 897 907 928-929 932-933 938-939 944 956-958 972-974 984-985 987 992-994 1005 1007 1576-1577 1579 1665 1667 1673 1675 3113 3205 3216-3217 3219 3227 3234 3239 3320 3322 3324-3325 3452-3453 3455 3496-3497 3504 3512 3514-3515 3517 3519 3532 3536 3558 3566 3630-3631 3660 3679 3695 3701 3706-3707 3710 3732 3734-3735 3778-3779 3844-3845 3847 3856 3861 3863 3869 3872 3882-3883 3891 3908 3910 3912-3913 3927 3933 3944 3946-3947 3957 3959 3963 3965-3966 4032-4034 4043 4049-4051 4349-4351 4413-4415 4429-4431 4433-4435 4449-4451 4493-4495 4497-4499 4513-4515 4669-4671 4685-4687 4689-4691 4705-4707 4749-4751 4753-4755 4769-4771 5439 5455 5459 5475 5525 5527 5535 5555 5557 5560-5561 5563 5611 5693-5695 5723 5729-5731 5773-5775 5777-5779 5793-5795 5908-5909 5911 5916-5917 5919 5928 5930-5931 5949 5953-5955 5964 5966 5977 5979 5990 5992-5993 5995-5996 5998 6001 6016-6017 6060 6062-6063 6105-6107 6117-6119 6123 6136 6138-6139 6399 6463 6479 6483 6499 6543 6547 6563 6588-6589 6632-6633 6719 6735 6739 6755 6797 6799 6801 6803 6819 6916-6918 6924 6926-6927 6962 6981 7001-7003 7415 7419 7421-7423 7505-7507 7512-7513 7515 7540-7541 7543 7559 7563 7565-7567 7570-7571 7574 7588-7589 7591 7608 7612-7613 7615 7628 7630-7631 7666-7667 7670-7671 7751 7757 7793 7796-7797 7799 7805 7807 7823 7827 7843 7878-7879 7881-7883 7893-7895 7940 7957 7966-7967 8012-8013 8024-8025 8033-8036 8038-8039 8058-8059 8062-8063 9213-9215 10239 11263 12285-12287 6/1092 1094 1114 1117 1119 1136 1138 1144 1220 1224 1239 1245 1247 1250 1256 1258 1269-1271 1356 1358-1361 1363 1600 1602 1614-1615 1619 2900-2902 2904-2906 2916-2918 2984 2986 2992-2993 2996 3036-3037 3071 3224-3226 3229-3231 3236-3238 3240-3242 3245-3247 3249-3251 3596-3597 3599 3621 3623 3625-3627 3720-3721 3723-3726 3736-3737 3747 3749-3751 3780-3781 3783 3789-3791 3836-3838 3900-3902 3945 3947 3980-3981 3984-3986 3999-4002 4010-4011 4014-4015 4019 4025-4027 6312-6313 6315 6657 6659 6665 6698-6699 12461 12817 12872-12873 12875 12901-12903 12905-12907 12940 12942-12943 12949-12951 12953-12955 13284-13286 13292 13305 13308-13309 13816-13818 13992 13996-13997 13999 14020-14021 14023-14024 14026-14027 14029 14052 14054-14055 14065 14067 14073-14075 14132-14134 14136-14138 14148-14150 14152-14154 14224 14226 14256 14258-14259 14262 14268 14270 14335 14512 14514-14515 14518 14532-14533 14544-14545 14548-14549 14570-14571 14574 14644-14646 14648-14650 14656 14658 14664 14666 14709-14711 14713 14715 14775 14777-14779 14801 14803 14813 14818-14819 14823 14834 14845-14847 14934-14935 15106-15107 15109-15111 15365 15367 15371 15374 15385 15410 15416 15428 15430 15432-15433 15440-15441 15443 15449 15483 15485-15486 15492-15494 15496 15522-15523 15526-15527 15559 15562-15563 15636 15638 15644 15656-15657 15660 15664 15701 15703 15741 15743 15746 15752 15754-15755 15758 15780 15782-15783 15802 15847 15851 15858-15859 15868 15870 16140-16142 16144 16146 16160-16161 16166-16167 16170-16171 16193 16195 17373-17375 17389-17391 17393-17395 17631 17647 17651 17695 17711 17715 17731 17949 17951 17967 17969 17971 17987 18051 18653-18655 18669-18671 18673-18675 18717-18719 18733-18735 18737-18739 18753-18755 18817-18819 18973-18975 18989-18991 18993-18995 19009-19011 19073-19075 21749-21751 21813-21815 21817-21819 21829-21831 21833-21835 21893-21895 21897-21899 22133-22135 22217-22219 22232 22234-22235 22237-22238 22248-22249 22251 22433 22436-22437 22439-22440 22442 22751 22767 22771 22831 22842-22843 22846 22889-22891 22904 22906-22907 22910 22915 23071 23087 23091 23107 23171 23620-23621 23623 23641 23643 23672-23673 23675 23688 23690 23718 23793 23795 23805 23808 23810-23811 23860-23862 23868 23904-23905 23907 23913 23915 23952 23954-23955 23964 23966 23976-23977 23988 23990 23996 24001 24013 24015 24048-24049 24052-24053 24055 24072-24074 24076 24096 24104 24106-24107 24110 24216 24218-24219 24244 24246-24247 24298 24382-24383 24398-24399 24410-24411 24414 24417 24419 24465-24467 24487 24491 24548 24550-24551 25589 25591 25593 25595 25847 25851 25909-25911 25913-25915 25927 25931 25991 25995 26167 26171 26183 26187 26247 26249-26251 26541 26869-26871 26873-26875 26927 26934-26935 26937-26939 26949-26951 26953-26955 27013-27015 27017 27019 27193-27195 27203 27209-27211 27269-27271 27273-27275 27676-27678 27700 27702-27703 27712-27714 27754 27840 27842 27854-27855 27967 28000-28001 28003 28053-28055 28061 28063 29659 29671 29674-29675 29681-29683 29981 29983 30005 30007 30017-30019 30056-30057 30059 30148-30149 30151 30168-30169 30231 30235 30257-30259 30274-30275 30278 30290-30291 30300 30302-30303 30340-30341 30343-30344 30346-30347 30350 30360-30361 30363 30386 30388-30389 30392 30394-30395 30436-30437 30439 30456-30457 30459 30474-30475 30518 30570 30656 30658-30659 30662-30663 30674-30675 30997 30999 31003 31036-31037 31039 31168-31169 31171 31181 31192 31219 31287 31291 31307 31320 31322-31323 31367 31370-31371 31499 31501-31503 31506-31507 31510 31521-31523 31560 31562-31563 31565-31567 31569-31571 31768 31774-31775 31818 31825 31827 31836-31837 31856 31858-31859 31862 32037 32061 32105 32108-32109 32128 32130-32131 32148 32150 32202 32224 32226-32227 32230-32231 32242 32245-32247 36831 36847 36851 40949-40951 40953-40955 45045 45047 45051 49117-49119 49133-49135 49137-49139https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/707/A198?format=asciiRadiodefaultJ/A+A/707/A198/lotssdr3Raw radio component catalogue of LoTSS-DR3recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceThe radio name of the source in the format "ILTJHHMMSS.s+DDMMSS"meta.id;meta.maincharindexedRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainindexede_RAJ2000? Uncertainty in right ascensionarcsecstat.error;pos.eq.radoublenullableDEJ2000Declination (J2000)degpos.eq.dec;meta.mainindexede_DEJ2000? Uncertainty in declinationarcsecstat.error;pos.eq.decdoublenullableSpeakPeak Stokes I flux density at 144MHz per beam of the sourcemJy/beamphot.flux.density;em.radio.100-200MHzdoublee_SpeakUncertainty in peak Stokes I flux density per beam of the sourcemJy/beamstat.errordoubleSpeakTotIntegrated Stokes I flux density at 144MHzmJyphot.flux.density;em.radio.100-200MHzdoublee_SpeakTotUncertainty in integrated Stokes I flux densitymJystat.errordoubleMaj? Fitted FWHM of the major axis of the sourcearcsecphys.angSizedoublenullablee_Maj? Uncertainty in FWHM of the fitted major axisarcsecstat.errordoublenullableMin? Fitted FWHM of the minor axis of the sourcearcsecphys.angSize;srcdoublenullablee_Min? Uncertainty in FWHM of the fitted minor axisarcsecstat.error;stat.mindoublenullableDCMaj? Deconvolved FWHM of the major axis of the sourcearcsecphys.angSizedoublenullablee_DCMaj? Uncertainty in deconvolved FWHM of the major axisarcsecstat.errordoublenullableDCMin? Deconvolved FWHM of the minor axis of the sourcearcsecphys.angSizedoublenullablee_DCMin? Uncertainty in deconvolved FWHM of the minor axisarcsecstat.errordoublenullablePA[]? Fitted position angle of the major axis of the source measured east of northdegpos.posAng;meta.modelleddoublenullablee_PA? Uncertainty in fitted position angle of the major axis of the sourcedegstat.errordoublenullableDCPA? Deconvolved position angle of the major axis of the source measured east of northdegpos.posAngdoublenullablee_DCPA? Uncertainty in deconvolved position angle of the major axis of the sourcedegstat.errordoublenullableIslrmsRMS Average background RMS value of the island in which the source is locatedmJy/beamstat.errordoubleIslFTotIntegrated Stokes I flux density of the island in which the source is locatedmJyphot.flux.density;em.opt.Idoublee_IslFTotUncertainty in integrated Stokes I flux density of the islandmJystat.errordoubleSCodeSource classification code (1)meta.codecharHEALPIXHEALPix pixel index of the source position, computed at NSIDE = 16meta.idintResThe angular resolution of the mosaic image from which the source was extractedpos.angResolutionint