J/A+A/713/A224ivo://CDS.VizieR/J/A+A/713/A224CDSBondonneau L.Griessmeier J.-M.Theureau G.Cognard I.Jankowski F.,Kondratiev V.Kravtsov I.Petri J.Possenti A.Ulyanov O.,Zakharenko V.Brionne M.Cecconi B.Corbel S.Girard J.N.,Konovalenko O.Tokarsky P.Zarka P.2026-09-18T08:43:32Z2026-09-18T09:37:03ZCDS support team

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

cds-question@unistra.frsurveyspulsarsradio-sourcesThe radio frequency range below 100 MHz has been unexplored until recently for extended pulsar population studies. We present the first low-frequency pulsar census of the northern sky with the NenuFAR radio telescope (10-85 MHz), performed during its commissioning and early science phase in 2019-2021. Our programme was conceived as the first stepping stone of a future pulsar key science project, aimed at preparing for targeted studies on pulsars of peculiar interest (mode switching, drifting subpulses, and polarised emission), exploring pulsar spectra and pulse-shape evolution below the expected turn-over, and investigating dispersion and scattering due to the interstellar and heliospheric plasma. We observed all known pulsars observable from the Nancay Radio Observatory in France, i.e. with a declination above -20{deg} and dispersion measures (DMs) up to 100pc/cm^-3^. At the time of the sample selection, 576 pulsars fulfilled these criteria in the ATNF pulsar catalogue. We complemented this sample with 69 additional LOTAAS/LOFAR pulsars, yielding 645 observed pulsars. We used the 56 mini-arrays available in the NenuFAR core (i.e. 1064 antennas), corresponding to ~58% of the nominal collecting area. Targets were observed for between 25 and 180 minutes, depending on their elevation and nature (regular or millisecond pulsars). We detected 182 pulsars in the frequency range 10-85MHz, 89 of which had never been seen before in this range. We detected 13 millisecond pulsars, ten of which are new detections below 100MHz. We measured new DMs, scattering indices, duty cycles, and calibrated fluxes for all of them. The typical minimum detectable pulse was 1-2mJy for MSPs and 5-10mJy for the regular population. We release full-band phasograms for all targets, with frequency-resolved pulse profiles where the pulsar was bright enough.2026A&A...713A.224Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/713/A224CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/713/A224https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/713/A224http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/713/A224https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/713/A224https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/713/A224http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/713/A224GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/713/A224/tablea1 (Pulsars detected in this census)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/713/A224/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/713/A224/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/713/A224/tablea1?GETtext/xml+votable180.050000true3.5747.780.005555555555555556Cone search capability for table J/A+A/713/A224/tableb1 (Upper limits for non-detected pulsars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/713/A224/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/713/A224/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/713/A224/tableb1?GETtext/xml+votable180.050000true1.5218.580.0055555555555555566/196 212 233 314 389 426 472 580 621 692 781 813 1079 1226 1257 1336 1467 1470 1475 1630 1638 1676 1760 1835 1868 1894 1949 1963 2151 2256 2331 2439 2573 2598 2787 2855 2858 2863 2874 2922 2943 2975 3018 3056 3155 3157 3162 3234 3297 3311 3335 3367 3376 3483 3493 3501 3552 3598 3601 3614 3616 3621 3650 3708 3717 3731 3736 3738 3767 3784 3787 3872 3889 3947 4019 4163-4164 4227 4231 4335 4352 4403 4556 4584 4598 4608 4809 4831 4955 5070 5273 5664 5695 5955 6051 6094 6262 6450 6563 6573 6599 6783 7047 7049 7310 7391 7502 7689 7785-7786 7821 7877 8022 8068 8120-8121 8127 8131 8192 8277 8458 8539 8548 8644 8676 8714 8788 8946 8964 9040 9232 9240 9282-9283 9335 9436 9456 9497 9510 9515 9542 9563 9634 9696 9719 9880 9965 9992 10050 10196 10209 10233 10336 10814 10824 11287 11351 11371 11403 11538 11585 11619 11881 11970 12076 12115 12180 12259 12276 12343 12405 12441 12500 12513 12526 12539 12565 12586 12657 12719 12735 12747 12754 12767 12847 12870-12871 12875 12906 12911-12912 12923 12939 12957-12958 12968 12991 12993 12996 13002 13018 13031 13040 13053 13059 13065 13088 13111 13152 13191 13198 13218 13247 13287 13299 13316 13363 13405 13449 13460-13461 13464-13465 13472 13540 13719 13750 13759 13797 13903 13921 13952 14046 14122 14273 14284 14301 14309 14320-14321 14339 14341 14346 14356 14366 14375 14379 14394 14415 14426 14454 14503 14517 14528 14579 14656 14726 14748 14765 14806 14842 14916 14924 14935 15009 15013 15087 15180 15183 15226 15229 15277 15304 15463 15496 15499 15536 15601 15679 15690 15719 15738 15787 15817 15820 15875 15892 15917 15964 16161 16175 16291 16309 16349 17247 17378 17450 17532 17955 18136 18153 18288 18367 18406 18421 18520 18707 18764 18830 18947 18985 19025 19095 19249 19306 19419 19421 19438 19535 19552 19597 19880 19994 20042 20078 20096 20166 20171 20381 21171 21455 21504 21515 21519 21957 22058 22162 22188 22205-22206 22353 22426 22594 22743 22765 22824 22852 22917 22996 23258 23571 23620 23640 23643 23702 23727 23772 23830 23952 23961 23983 23994 24040 24185-24186 24193 24262 24296 24360-24361 24428 24460 24500 24539 24541 24543 24571 25065 25251 25732 25763 25795 25841 26170 26203 26266 26475 26520 26532 26555 26656 26824 26993 27049 27067 27152 27154 27223 27543 27554 27981 28106 28109 28135 28226 28350 29034 29048 29055 29113 29157 29172 29285 29288 29303 29334 29340 29369 29383 29387 29390 29422 29436 29485 29487 29506 29530 29534 29560 29569 29575 29591 29615 29617 29625 29653 29675 29692 29696 29707 29727 29746 29768 29789 29793 29831 29840 29846 29860 29863 29920 29929 29961 30055 30102 30106 30116 30121 30127 30193 30213 30219 30252 30260 30300 30312 30314 30316 30319 30333-30334 30339 30349 30354-30356 30362 30364 30387 30424 30452 30461 30464 30493 30517 30528 30534 30538 30541 30545 30548 30564 30566 30574 30576 30579 30591-30593 30595-30597 30600 30604 30609-30610 30616-30617 30630 30651 30657 30679 30681-30682 30691 30694 30700 30702 30707 30710 30712 30732 30744 30784 30824 30849 30871 30890 30941 31014 31031 31049 31058 31075 31078 31083 31103 31131 31181 31228 31239 31244 31251 31309 31344 31417 31591 31623 31697 31717 31745 31751 31757 31768 31775 31787 31797 31802 31809 31811-31812 31829 31837 31842 31851 31859 31864 31870 31872 31898 31902 31933 31970 31976 31983 31989 31998 32007 32024 32027 32029 32039-32040 32048 32058 32069 32077 32079 32085 32116 32140 32161 32186 32194 32218 32233 32241 32452 32459 32546 32548 32558 32567 32646-32647 32704 36540 40366 40432 40667 40680 44378 44777 44923 48609 48741 48807 48813 48845 48882 48928 49053 49129https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/713/A224?format=asciiRadiodefaultJ/A+A/713/A224/tablea1Pulsars detected in this censusrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameJ2000 pulsar namemeta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainDiscDiscovery namemeta.idcharSNRSignal-to-noise ratiostat.snrfloatf_SNR[*] Note on SNR (1)meta.codecharP0Topocentric spin periodstime.periodfloatDMDispersion measure from this workpc.cm**-3phys.dispMeasure;instr.dispersiondoublee_DMDispersion measure from this work errorpc.cm**-3stat.errordoubleScat/P0Calculated scattering time divided by P0%time.epoch;arith.ratio;meta.modelledfloatDurObservation durationmintime.duration;obsintDuty? Fractional duty cycle, w10/P0%stat.fit.paramfloatnullableBWEffective bandwidth after RFI excisionMHzinstr.bandwidthintFreqCentre frequencyMHzem.freqintl_FluxLimit flag on fluxmeta.code.error;phot.fluxcharSimbadNameSimbad column added by the CDSmeta.idcharnullableFluxMean flux densitymJyphot.flux.densityinte_Flux? Mean flux density errormJystat.error;phot.fluxintnullableJ/A+A/713/A224/tableb1Upper limits for non-detected pulsarsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameJ2000 pulsar namemeta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainDiscDiscovery namemeta.idcharP0Catalog spin periodstime.period;meta.tablefloatDMCatalog dispersion measurepc.cm**-3phys.dispMeasurefloatScat/P0Calculated scattering time divided by P0%time.epoch;arith.ratio;meta.modelledfloatDurObservation durationmintime.duration;obsintTskySky temperatureKinstr.skyTemp;obs.fieldintBWEffective bandwidth after RFI excisionMHzinstr.bandwidthintFreqCentre frequencyMHzem.freqintSlimMean flux density upper limitmJyphot.flux.densityint