J/A+A/626/A104ivo://CDS.VizieR/J/A+A/626/A104doi:10.26093/cds/vizier.36260104CDSSanidas S.Cooper S.Bassa C.G.Hessels J.W.T.Kondratiev V.I.,Michilli D.Stappers B.W.Tan C.M.Van Leeuwen J.Cerrigone L.,Fallows R.A.Iacobelli M.Orru E.Pizzo R.F.Shulevski A.,Toribio M.C.Ter Veen S.Zucca P.Bondonneau L.Griessmeier J.-M.,Karastergiou A.Kramer M.Sobey C.2021-03-01T16:06:13Z2019-10-02T09:35:50ZCDS support team

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

cds-question@unistra.frpulsarsWe present an overview of the LOFAR Tied-Array All-Sky Survey (LOTAAS) for radio pulsars and fast transients. The survey uses the high-band antennas of the LOFAR Superterp, the dense inner part of the LOFAR core, to survey the northern sky ({delta}>0{deg}) at a central observing frequency of 135MHz. A total of 219 tied-array beams (coherent summation of station signals, covering 12 square degrees), as well as three incoherent beams (covering 67 square degrees) are formed in each survey pointing. For each of the 222 beams, total intensity is recorded at 491.52 {mu}s time resolution. Each observation integrates for 1hr and covers 2592 channels from 119 to 151MHz. This instrumental setup allows LOTAAS to reach a detection threshold of 1-5mJy for periodic emission. Thus far, the LOTAAS survey has resulted in the discovery of 73 radio pulsars. Among these are two mildly recycled binary millisecond pulsars (P=13 and 33ms), as well as the slowest-spinning radio pulsar currently known (P=23.5s). The survey has thus far detected 311 known pulsars, with spin periods ranging from 4ms to 5.0s and dispersion measures from 3.0 to 217pc/cm^3^. Known pulsars are detected at flux densities consistent with literature values. We find that the LOTAAS pulsar discoveries have, on average, longer spin periods than the known pulsar population. This may reflect different selection biases between LOTAAS and previous surveys, though it is also possible that slower-spinning pulsars preferentially have steeper radio spectra. LOTAAS is the deepest all-sky pulsar survey using a digital aperture array; we discuss some of the lessons learned that can inform the approach for similar surveys using future radio telescopes such as the Square Kilometre Array.2019A&A...626A.104Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/626/A104CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/psr : ATNF Pulsar Catalogue (Manchester+, 2005)J/A+A/586/A92 : Pulse profiles of 100 radio pulsars (Pilia+, 2016)J/A+A/591/A134 : LOFAR census of non-recycled pulsars (Bilous+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/626/A104https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/626/A104http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/626/A104https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/626/A104https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/626/A104http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/626/A104GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/626/A104/table2 (LOTAAS pulsar discoveries and their properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/626/A104/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/626/A104/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/626/A104/table2?GETtext/xml+votable180.050000true9.77535.750.005555555555555556Cone search capability for table J/A+A/626/A104/tablea1 (Known pulsars detected by LOTAAS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/626/A104/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/626/A104/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/626/A104/tablea1?GETtext/xml+votable180.050000true3.573958347.77594440.0055555555555555566/196 212 323 389 426 472 692 781 1079 1226 1257 1467 1638 1641 1676 1760 1835 1868 1894 1949 1961 1963 2256 2331 2439 2573 2598 2787 2858 2874 2911 2943 2975 3018 3056 3155 3157 3162 3188 3234 3297 3311 3367 3481 3493 3552 3598 3601 3614 3616 3621 3705 3717 3719 3731 3736 3784 3787 3872 4019 4163 4227 4352 4403 4556 4598 4809 4831 4955 5070 5273 5664 5695 5955 6051 6094 6262 6450 6573 6599 7047 7310 7391 7502 7689 7821 8022 8068 8120-8121 8131 8277 8458 8644 8714 8946 9040 9240 9282-9283 9335 9496 9510 9515 9542 9563 9634 9696 9719 9880 9986 10196 10209 10233 10446 10760 10814 10824 11287 11371 11403 11538 11585 11625 11881 12076 12115 12259 12441 12500 12513 12526 12539 12565 12586 12657 12664 12735 12747 12767 12870 12906 12912 12923 12939 12993 12996 13002 13031 13053-13054 13059 13065 13111 13152 13191 13198 13218 13247 13287 13299 13316 13405 13460-13461 13464 13472 13566 13719 13759 13797 13921 13952 14046 14078 14102 14122 14251 14273 14284 14301 14306 14309 14313 14320-14322 14330 14333 14344 14346 14362 14366 14368 14379 14394 14415 14418 14426 14437 14454 14503 14517 14549 14621 14748 14765 14772 14842 14924 14934 15009 15013 15180 15183 15215 15226 15229 15240 15277 15304 15365 15377 15496 15499 15536 15562 15646 15679 15736 15751 15758 15787 15811 15820 15875 15892 15917 15964 16161 16175 16309 16343 17247 18136 18153 18367 18406 18421 18764 18799 18830 18947 19025 19419 19438 19597 20096 20166 20235 20381 21957 22058 22188 22206 22917 22996 23258 23622 23664 23727 23797 23830 23983 23994 24040 24185-24186 24262 24296 24360-24361 24428 24460 24500 24541-24542 24571 26170 26266 26475 26520 26555 27543 27553-27554 28106 28108 28135 28226 28372 29653 29680 29929 29951 30055 30102 30106 30116 30127 30252 30273 30298 30300 30312 30328 30332-30333 30355 30362 30452 30464 30493 30501 30517 30538 30545 30548 30591 30617 30641 30657 30681 30691 30694 30708 30719 30941 31031 31078 31244 31311 31591 31623 31697 31717 31751 31775 31809 31811 31829 31864 31872 31933 31970 31989 32007 32024 32027 32048 32058 32069 32079 32086 32140 32186 32195 32218 32241 32548 32558 32560 32567 32592 32646-32647 32704 491298.945194275365884e-26 2.6504278676176564e-25https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/626/A104?format=asciiRadiodefaultJ/A+A/626/A104/table2LOTAAS pulsar discoveries and their propertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPSRPSR name (JHHMM+DD) (1)meta.id;meta.maincharPspinSpin periodstime.periodfloatDMDispersion measurepc.cm**-3phys.dispMeasure;instr.dispersionfloate_DMrms uncertainty on DMpc.cm**-3stat.errorfloatRAJ2000Right ascension (J2000)pos.eq.ra;meta.maine_RAJ2000rms uncertainty on right ascension (J2000) (2)minstat.error;pos.eq.rafloatDEJ2000Declination (J2000)pos.eq.dec;meta.maine_DEJ2000rms uncertainty on declination (J2000) (2)arcminstat.errorintGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latfloatdNE2001Distance as predicted by the NE2001 modekpcpos.distancefloatw50Pulse FWHMmssrc.var.pulseintComComments (3)meta.notecharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/626/A104/tablea1Known pulsars detected by LOTAASSimbadNameSimbad column added by the CDSmeta.idcharNotesNotes (1)meta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPSRPSR namemeta.id;meta.maincharPspinDetected spin periodstime.periodfloatDMDispersion measurepc.cm**-2phys.dispMeasure;instr.dispersionfloatthetaTABOffset between the known position of the pulsars and the centre position of the tied-array beam (TAB) where the pulsar is detecteddegpos;arith.difffloatthetaSAPOffset between the known position of the pulsars and the centre position of the sub-array pointing (SAP) where the pulsar is detecteddegpos;arith.difffloatsigmaSignal-to-noise of the pulsars at 135MHzstat.snrfloatSu135Estimated flux density of the pulsars at 135MHz before applying the correction factor due to the offset in positionmJyphot.flux.density;em.radio.100-200MHzfloatSx135? Correction correction factor due to the offset in positioninstr.paramfloatnullableSc135? Estimated flux density of the pulsars at 135MHz after applying the correction factor due to the offset in positionmJyphot.flux.density;em.radio.100-200MHzfloatnullableS400? Flux density at 400MHzmJyphot.flux.density;em.radio.200-400MHzfloatnullableS150? Flux density at 150MHzmJyphot.flux.density;em.radio.100-200MHzfloatnullablealpha? Spectral index as listed in PSRCAT v1.59 (Manchester et al. 2005, Cat. B/psr)spect.indexfloatnullableSexp135? Expected flux density at 135MHzmJyphot.flux.density;em.radio.100-200MHzfloatnullable_RAPosition from Simbad and Name (right ascension part)degpos.eq.ra;meta.main_DEPosition from Simbad and Name (declination part)degpos.eq.dec;meta.main