J/MNRAS/484/3691ivo://CDS.VizieR/J/MNRAS/484/3691doi:10.26093/cds/vizier.74843691CDSJankowski F.Bailes M.Van Straten W.Keane E.F.Flynn C.Barr E.D.,Bateman T.Bhandari S.Caleb M.Campbell-Wilson D.Farah W.,Green A.J.Hunstead R.W.Jameson A.Oslowski S.Parthasarathy A.,Rosado P.A.Venkatraman Krishnan V.2024-08-19T20:16:40Z2020-02-05T14:48:55ZCDS support team

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

cds-question@unistra.frpulsarsradio-continuum-emissionradio-sourcesastrometryephemeridesinterferometryastronomical-modelsproper-motionsWe present an overview and the first results from a large-scale pulsar timing programme that is part of the UTMOST project at the refurbished Molonglo Observatory Synthesis Radio Telescope (MOST) near Canberra, Australia. We currently observe more than 400 mainly bright southern radio pulsars with up to daily cadences. For 205 (8 in binaries, 4 millisecond pulsars), we publish updated timing models, together with their flux densities, flux density variability, and pulse widths at 843 MHz, derived from observations spanning between 1.4 and 3 yr. In comparison with the ATNF pulsar catalogue, we improve the precision of the rotational and astrometric parameters for 123 pulsars, for 47 by at least an order of magnitude. The time spans between our measurements and those in the literature are up to 48 yr, which allow us to investigate their long-term spin-down history and to estimate proper motions for 60 pulsars, of which 24 are newly determined and most are major improvements. The results are consistent with interferometric measurements from the literature. A model with two Gaussian components centred at 139 and 463km/s fits the transverse velocity distribution best. The pulse duty cycle distributions at 50 and 10 per cent maximum are best described by lognormal distributions with medians of 2.3 and 4.4 per cent, respectively. We discuss two pulsars that exhibit spin-down rate changes and drifting subpulses. Finally, we describe the autonomous observing system and the dynamic scheduler that has increased the observing efficiency by a factor of 2-3 in comparison with static scheduling.2019MNRAS.484.3691Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/484/3691CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/484/3691https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/484/3691http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/484/3691https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/484/3691https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/484/3691http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/484/3691GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/484/3691/tableb1 (Rotational parameters for 8 binary systems)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/484/3691/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/484/3691/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/484/3691/tableb1?GETtext/xml+votable180.050000true69.316656-47.25269916670.005555555555555556Cone search capability for table J/MNRAS/484/3691/tableb2 (Rotational parameters for 197 isolated pulsars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/484/3691/tableb2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/484/3691/tableb2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/484/3691/tableb2?GETtext/xml+votable180.050000true8.537125-7.3655555560.0055555555555555566/4163 12500 16996 17247 17378 17532 18947 19025 20574 21171 21455 21504 22271 22594 22996 23622 23727 23830 27554 28226 28692 28749 28795 28807 28825 28843 28849 28864 28869 28872 28921 28945 29059 29082 29108 29145 29334 29340 29383 29387 29461 29487 29511 29524 29530 29532 29534 29550 29575 29653 29727 29789 29863 29883 29929 30055 30210 30215 30252 30257-30258 30269 30273 30298 30300 30328 30330 30332 30348 30357 30417 30501 30617 30619 30641 30657 30690 30941 31829 32888 33030 33730 34034 34393 35229 35691 36540 37207 37244 37360-37361 37375 37701 37704 37745 37787 37828 37848 37864 37905 37910 37923 37946 37948 37967 37990 38020 38040 38048 38081 38250 38402 38428 38711 39216 39275 39280 39342 39784 39789 39977 39992 40432 40667 40680 41212 41386 41535 41561 41567 41583 41607 41625 41630 41654 41656 41672 41674 41689 41697 41704 41710 41736 41757 41765 41771 41781 41799 41806 41819-41820 41871 41894 42092 42155 42178 42196 42208 42228 42306 42346 42356 42382 42384 42391 42432 42450 42466 42471 42477 42487 42503 42515 42560 42592 42595 42658 42676 42821 42832 43012 43060 43107 43110 43113 43144 43169 43261 43272 45285 46095 46237 46787 47010 47741 47975 47998 48080 48928 491295.585776613014535e-25 5.585776613014535e-25https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/484/3691?format=asciiRadiodefaultJ/MNRAS/484/3691/table3Proper motions and velocities for 60 pulsarsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/60] Running numbermeta.id;meta.mainintPSRJPulsar name (J2000)meta.idcharNote[dt] Note (1)meta.notecharpmRAProper motion in right ascensionmas/yrpos.pm;pos.eq.rafloate_pmRAUncertainty of proper motion in RAmas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion in declinationmas/yrpos.pm;pos.eq.decfloate_pmDEUncertainty of proper motion in Decmas/yrstat.error;pos.pm;pos.eq.decfloatpmRAl? Literature value for proper motion in RAmas/yrpos.pm;pos.eq.rafloatnullablee_pmRAl? Uncertainty of lit value of pm in RAmas/yrstat.error;pos.pm;pos.eq.rafloatnullablen_pmRAl[e] Footnote (1)meta.notecharpmDEl? Literature value of proper motion in Decmas/yrpos.pm;pos.eq.decdoublenullablee_pmDEl? Uncertainty of lit value of pm in Decmas/yrstat.error;pos.pm;pos.eq.decfloatnullablen_pmDEl[e] Footnote (1)meta.notechardtMaximum time span between pos measurementsyrtime.interval;stat.maxfloatNposNumber of positions in pm estimatemeta.numberintr_pmRAl[1/15]? Reference for literature proper motions (2)meta.ref;pos.pm;pos.eq.raintnullableDistDistancekpcpos.distancefloate_Dist? Uncertainty of distancekpcstat.errorfloatnullablevtransTransverse velocitykm/sphys.veloc.transversefloate_vtransUncertainty of transverse velocitykm/sstat.errorfloatSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/484/3691/tableb1Rotational parameters for 8 binary systemsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/8] Running numbermeta.id;meta.mainintPSRJPulsar name (J2000)meta.idcharRAICRSRight ascension (ICRF)pos.eq.ra;meta.maine_RAICRSUncertainty of right ascensionsstat.error;pos.eq.radoubleDEICRSDeclination (ICRF)pos.eq.dec;meta.maine_DEICRSUncertainty of declinationarcsecstat.error;pos.eq.decfloatF0Pulsar spin frequencyHzem.freq;src.vardoublee_F0Uncertainty of spin frequencyHzstat.errordoubleF1First temporal derivative of spin frequency1e-15s**-2em.freq;src.vardoublee_F1Uncertainty of first spin frequency derivative1e-15s**-2stat.errorfloatRMSRoot mean square timing residualusstat.errorfloatRMS/P0RMS timing residual divided by spin periodstat.fit.paramfloatNTOANumber of pulse arrival times in fitmeta.numberintchi2rReduced chi2 of the timing fitstat.fit.chi2floatdofDegrees of freedom of the timing fitstat.fit.dofintdtTime span of pulse arrival times in fityrtime.intervalfloatflag[w] Pulse arrival time correction flag (1)meta.code.errorcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/484/3691/tableb2Rotational parameters for 197 isolated pulsarsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqRunning numbermeta.id;meta.mainintPSRJPulsar name (J2000)meta.idcharRAICRSRight ascension (ICRF)pos.eq.ra;meta.maine_RAICRSUncertainty of right ascensionsstat.error;pos.eq.rafloatDEICRSDeclination (ICRF)pos.eq.dec;meta.maine_DEICRSUncertainty of declinationarcsecstat.error;pos.eq.decfloatF0Pulsar spin frequencyHzem.freq;src.vardoublee_F0Uncertainty of spin frequencyHzstat.errordoubleF1First temp derivative of spin frequency1e-15s**-2em.freq;src.vardoublee_F1Uncertainty of first spin freq derivative1e-15s**-2stat.errordoubleF2? Second temp derivative of spin frequency1e-24s**-3stat.fit.paramdoublenullablee_F2? Uncertainty of second spin frequency derivative1e-24s**-3stat.errordoublenullableRMSRoot mean square timing residualusstat.errorfloatRMS/P0RMS timing residual divided by spin periodstat.fit.paramfloatNTOANumber of pulse arrival times in fitmeta.numberintchi2rReduced chi2 of the timing fitstat.fit.chi2floatl_chi2rLimit flag on reduced chi2meta.code.errorchardofDegrees of freedom of the timing fitstat.fit.dofintdtTime span of pulse arrival times in fityrtime.intervalfloatSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/484/3691/tablec1Flux densities and pulse widths for 205 pulsarsPSRJPulsar name (J2000)meta.idcharSeq[1/205] Running numbermeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNote[Y] Label of whether pulsar has an interpulsemeta.notecharS843Flux density at 843 MHzmJyphot.flux.density;em.radio.750-1500MHzfloate_S843Uncertainty of flux density at 843 MHzmJystat.errorfloatmrRobust modulation index at 843 MHzspect.index;em.radio.750-1500MHzfloatW50? Full pulse width at 50 per cent maximumdegsrc.var.pulse;stat.maxfloatnullableW10Full pulse width at 10 per cent maximumdegsrc.var.pulse;stat.maxfloatSimbadSimbad column added by the CDSmeta.ref.urlchar