J/MNRAS/493/1063ivo://CDS.VizieR/J/MNRAS/493/1063doi:10.26093/cds/vizier.74931063CDSCameron A.D.Champion D.J.Bailes M.Balakrishnan V.Barr E.D.,Bassa C.G.Bates S.Bhandari S.Bhat N.D.R.Burgay M.,Burke-Spolaor S.Flynn C.M.L.Jameson A.Johnston S.Keith M.J.,Kramer M.Levin L.Lyne A.G.Ng C.Petroff E.Possenti A.Smith D.A.,Stappers B.W.van Straten W.Tiburzi C.Wu J.2024-09-02T20:15:44Z2023-07-28T09:51:39ZCDS support team

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

cds-question@unistra.frneutron-starspulsarsmultiple-starsorbitsstellar-distanceradio-sourcesWe present the results of processing an additional 44 per cent of the High Time Resolution Universe South Low Latitude (HTRU-S LowLat) pulsar survey, the most sensitive blind pulsar survey of the southern Galactic plane to date. Our partially coherent segmented acceleration search pipeline is designed to enable the discovery of pulsars in short, highly accelerated orbits, while our 72-min integration lengths will allow us to discover pulsars at the lower end of the pulsar luminosity distribution. We report the discovery of 40 pulsars, including three millisecond pulsar-white dwarf binary systems (PSRs J1537-5312, J1547-5709, and J1618-4624), a black-widow binary system (PSR J1745-23) and a candidate black-widow binary system (PSR J1727-2951), a glitching pulsar (PSR J1706-4434), an eclipsing binary pulsar with a 1.5-yr orbital period (PSR J1653-45), and a pair of long spin-period binary pulsars which display either nulling or intermittent behaviour (PSRs J1812-15 and J1831-04). We show that the total population of 100 pulsars discovered in the HTRU-S LowLat survey to date represents both an older and lower luminosity population, and indicates that we have yet to reach the bottom of the luminosity distribution function. We present evaluations of the performance of our search technique and of the overall yield of the survey, considering the 94 per cent of the survey which we have processed to date. We show that our pulsar yield falls below earlier predictions by approximately 25 per cent (especially in the case of millisecond pulsars), and discuss explanations for this discrepancy as well as future adaptations in RFI mitigation and searching techniques which may address these shortfalls.2020MNRAS.493.1063Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/493/1063CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/493/1063https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/493/1063http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/493/1063https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/493/1063https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/493/1063http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/493/1063GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/493/1063/table2 (40 newly discovered pulsars from the HTRU-S LowLat survey)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/493/1063/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/493/1063/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/493/1063/table2?GETtext/xml+votable180.050000true174.1050833-65.45541670.005555555555555556Cone search capability for table J/MNRAS/493/1063/table3 (Discovery parameters of the seven newly discovered pulsars for which full timing solutions are not yet available)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/493/1063/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/493/1063/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/493/1063/table3?GETtext/xml+votable180.050000true253.475-45.28330.005555555555555556Cone search capability for table J/MNRAS/493/1063/table4 (Best-fitting TEMPO2 timing parameters for 28 pulsars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/493/1063/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/493/1063/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/493/1063/table4?GETtext/xml+votable180.050000true174.10508333-65.455416670.005555555555555556Cone search capability for table J/MNRAS/493/1063/table6 (Best-fitting tempo2 timing parameters for four newly discovered binary pulsars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/493/1063/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/493/1063/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/493/1063/table6?GETtext/xml+votable180.050000true234.4070610833-53.20696027780.005555555555555556Cone search capability for table J/MNRAS/493/1063/tablea1 (755 redetections of 390 pulsars recorded during processing of the 44 per cent of the HTRU-S LowLat survey as reported in this paper)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/493/1063/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/493/1063/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/493/1063/tablea1?GETtext/xml+votable180.050000true153.202-58.96352780.005555555555555556Cone search capability for table J/MNRAS/493/1063/tablea2 (Pulsars with S/N_exp_>S/N_min_=9 which were not detected in the ~44 per cent of the HTRU-S LowLat survey processed by the partially coherent segmented acceleration search pipeline for this paper)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/493/1063/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/493/1063/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/493/1063/tablea2?GETtext/xml+votable180.050000true157.7593333-61.29738890.0055555555555555565/7555 7560 10419 10428 10556 10595 6/28800 28807-28808 28812-28813 28815-28816 28818-28819 28822 28825-28826 28829 28838 28845 28849-28850 28854 28860-28861 28864 28866 28870 28872 28892 28896 28899-28900 28904 28910 28919 28921 28924 28927 29082 29088-29090 29098-29100 29103 29106 29108 29112-29114 29116 29163 29165-29166 29178 29253 29264 29268-29269 29271 29440 29445 29447 29457-29459 29461 29464-29465 29505 29509-29511 29513 29515-29516 29518 29522-29523 29525 29527-29528 29530 29532 29534-29536 29541 29552 29555-29556 29559 30211 30215 30217-30219 30227 30234 30244 30246-30247 30249 30252 30265 37207 37213 37215 37331-37332 37339 37341 37360-37361 37374 37891-37892 37895 37898 37900-37901 37903 37905-37906 37910 37915 37919 37924 37929-37931 37940 37946 38020 38048-38049 41464 41466 41468 41470 41567 41578 41583 41597 41625 41627-41628 41630 41652-41654 41660 41665 41667 41671-41672 41674 41682 41685 41687 41689 41696-41697 41701 41711 41736 41743 41753 41755-41758 41762 41765 41768-41769 41771 41777-41778 41780-41782 41788 41797 41799-41800 41805 41809-41814 41816 41818-41820 41833 41836 41840-41841 41844 41859 41862 41865 42147 42152 42155 42157 42159 42162 42168-42169 42171 42174 42187 42189 42203 42206 42209 42213-42215 42217-42218 42220 42222-42223 42228 42232-42233 42346 42348-42349 42351 42363 42366-42367 42371 42374-42376 42378-42379 42384 42386 42391 42397-42399 42401 42405 42410 42416 42420 42422 42432-42433 42435 42438 42441-42442 42445 42449-42451 42456-42457 42459 42464 42466 42471-42473 42481 42487 42499-42500 42503 42510 42513-42515 42517 42529 42560-42561 43011-43013 43017 43019-43020 43025 43040 43044 430549.276497240453405e-25 9.276497240453405e-25https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/493/1063?format=asciiRadiodefaultJ/MNRAS/493/1063/table1A summary of the 15 individual segments searched as part of the partially coherent segmented acceleration searchamaxAcceleration search range (maximum value)m.s**-2phys.accelerationintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSegGroup of segmentsmeta.id;meta.maincharNsegNumber of segments in each groupmeta.numberinttintIntegration timestime.expointPbminMinimum orbital period sensitivityhtime.epochfloataminAcceleration search range (minimum value)m.s**-2phys.accelerationintf_amin[a] Flag on amin (1)meta.codecharJ/MNRAS/493/1063/table240 newly discovered pulsars from the HTRU-S LowLat surveyMoreLink to Tables 3, 4, 5, 6, 8, 9 and 10meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNamePulsar name (JHHMM+DDMM)meta.id;meta.maincharprimaryf_Name[a] Flag on Name (1)meta.codecharDateDiscovery datetime.epochnullableTimeUTC time of discoverytime.epochnullableBeamBeam numbermeta.numberintS/NHSignal to noise ratio at which each pulsar was detected in the HTRU-S LowLat surveystat.snrfloatl_S/NPLimit flag on S/NPmeta.code.errorcharS/NP? Signal to noise ratio of the pulsar in the PMPSstat.snrfloatnullableS1400? Mean 1.4GHz flux densitymJyphot.flux.density;em.radio.750-1500MHzfloatnullablee_S1400? Error on S1400 (1{sigma} uncertainty)mJystat.errorfloatnullableW50Pulse width at 50 per cent of the pulse peakmssrc.var.pulsefloatW10Pulse width at 10 per cent of the pulse peakmssrc.var.pulsefloatL1400N? 1.4GHz luminosity estimated using the NE2001 model (Cordes & Lazio 2002astro.ph..7156C)mJy.kpc**-2phot.flux.density;em.radio.750-1500MHzfloatnullableL1400Y? 1.4GHz luminosity estimated using the YMW16 model (Yao, Manchester & Wang 2017ApJ...835...29Y)mJy.kpc**-2phot.flux.density;em.radio.750-1500MHzfloatnullable_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/MNRAS/493/1063/table3Discovery parameters of the seven newly discovered pulsars for which full timing solutions are not yet availablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.maine_RAJ2000Error on RAmminstat.error;pos.eq.rafloatDEJ2000Declination (J2000)pos.eq.dec;meta.maine_DEJ2000Error on DEmarcminstat.errorintGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latfloatPSpin periodmstime.perioddoublee_PError on P (1{sigma} uncertainty)msstat.errordoubleDMDispersion measurepc.cm**-3phys.dispMeasure;instr.dispersionfloate_DMError on DM (1{sigma} uncertainty)pc.cm**-3stat.errorfloatDistNDistance according to the NE2001 model (Cordes & Lazio 2002astro.ph..7156C)kpcpos.distancefloatDistYDistance according to the YMW16 model (Yao, Manchester & Wang 2017ApJ...835...29Y)kpcpos.distancefloatNamePulsar name (JHHMM-DD)meta.id;meta.maincharf_Name[ab] Flag on Name (1)meta.codecharJ/MNRAS/493/1063/table4Best-fitting TEMPO2 timing parameters for 28 pulsarsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNamePulsar name (JHHMM-DDMM)meta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.maine_RAJ2000Error on RAssstat.error;pos.eq.rafloatDEJ2000Declination (J2000)pos.eq.dec;meta.maine_DEJ2000Error on DEsarcsecstat.error;pos.eq.decfloatGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latfloatPSpin periodmstime.perioddoublee_PError on Pmsstat.errordoublePdotSpin-period derivativearith.rate;time.periodfloate_PdotError on Pdotstat.errorfloatDMDispersion measurespc.cm**-3instr.dispersionfloate_DMError on DMpc.cm**-3stat.errorfloatDistNDistance according to the NE2001 model (Cordes & Lazio 2002astro.ph..7156C)kpcpos.distancefloatDistYDistance according to the YMW16 model (Yao, Manchester & Wang 2017ApJ...835...29Y)kpcpos.distancefloatJ/MNRAS/493/1063/table5Fit-related timing parameters for 28 pulsarsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNamePulsar name (JHHMM-DDMM)meta.id;meta.maincharDspanData spandtime.intervalcharEpochPeriod reference epochdmeta.refintnTOANumber of times-of-arrival (TOAs) used to derive each timing solutionmeta.numberintRMSRoot mean square of the weighted TEMPO2 fitusstat.errorintchi2Unweighted reduced chi-squared of the TEMPO2 fitstat.fit.chi2floattaucCharacteristic age (1)Myrtime.agedoubleBsurfSurface magnetic field (1)1e+10Gphys.magFieldfloatEdotSpin-down luminosity (1)1e+23Wphys.energydoubleJ/MNRAS/493/1063/table6Best-fitting tempo2 timing parameters for four newly discovered binary pulsarsesinwe*sinw component of eccentricitysrc.orbital.eccentricitydoublel_ecoswLimit flag on ecoswmeta.code.errorcharecoswe*cosw component of eccentricitysrc.orbital.eccentricitydoublel_eLimit flag on emeta.code.errorchareInferred eccentricitysrc.orbital.eccentricitydoubleMfuncMass function0.001solMassphys.massdoublee_MfuncError on Mfunc0.001solMassstat.errordoubleMcminMinimum companion mass (1)solMassphys.massdoublee_McminError on McminsolMassstat.errordoubleMcmedMedian companion mass (2)solMassphys.massdoublee_McmedError on McmedsolMassstat.errordoublefirstTOAFirst time-of-arrival (TOA)dtime.epochintlastTOALast time-of-arrival (TOA)dtime.epochintEpochTiming epochdtime.epochintnTOANumber of times-of-arrival (TOAs) used to derive each timing solutionmeta.numberintRMSRoot mean square of the weighted TEMPO2 fitusstat.errorintchi2Unweighted reduced chi-squared of the TEMPO2 fitstat.fit.chi2floatGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latfloatDistNDistance according to the NE2001 model (Cordes & Lazio 2002astro.ph..7156C)kpcpos.distancefloatDistYDistance according to the YMW16 model (Yao, Manchester & Wang 2017ApJ...835...29Y)kpcpos.distancefloattaucCharacteristic ageMyrtime.ageintBsurfSurface magnetic field1e+10Gphys.magFieldfloatEdotSpin-down luminosity1e+23Wphys.energyintNamePulsar name (JHHMM-DDMM)meta.id;meta.maincharl_esinwLimit flag on esinwmeta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.maine_RAJ2000Error on RAssstat.error;pos.eq.radoubleDEJ2000Declination (J2000)pos.eq.dec;meta.maine_DEJ2000Error on DEsarcsecstat.error;pos.eq.decfloatPSpin periodmstime.perioddoublee_PError on Pmsstat.errordoublePdotSpin-period derivativearith.rate;time.perioddoublee_PdotError on Pdotstat.errordoubleDMDispersion measurepc.cm**-3phys.dispMeasure;instr.dispersionfloate_DMError on DMpc.cm**-3stat.errorfloatPdOrbital perioddtime.perioddoublee_PdError on Pddstat.errordoublexProjected semimajor axisc.sphys.angSize.smajAxis;src.orbitaldoublee_xError on xc.sstat.error;pos.cartesian.xdoubleTascEpoch of the ascending nodedtime.epochdoublee_TascError on Tascdstat.errordoubleModBinary modelstat.param;meta.modelledcharJ/MNRAS/493/1063/table8Approximate binary parameters for PSR J1745-23recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNamePulsar name (J1745-23)meta.id;meta.maincharProgFitting programmeta.id;stat.fitcharModBinary modelstat.param;meta.modelledcharf_eFlag on e (1)meta.codecharwLongitude of periastronsrc.orbital.periastronintf_wFlag on w (1)meta.codecharT0Epoch of periastrondtime.epochdoublee_T0Error on T0dstat.errordoubleMfuncMass function1e-06solMassphys.massfloate_MfuncError on Mfunc1e-06solMassstat.errorfloatMcminMinimum companion mass (2)solMassphys.massdoublee_McminError on McminsolMassstat.errordoubleMcmedMedian companion mass (2)solMassphys.massdoublee_McmedError on McmedsolMassstat.errordoublePdOrbital perioddtime.perioddoublee_PdError on Pddstat.errordoublexProjected semimajor axisc.sphys.angSize.smajAxis;src.orbitaldoublee_xError on xc.sstat.error;pos.cartesian.xdoubleeEccentricitysrc.orbital.eccentricityintJ/MNRAS/493/1063/table9Parameters of the glitch observed in PSR J1706-4434e_DPhiError on DPhistat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEpochEstimated glitch epochdtime.epochintDPhiPhase increment ({Delta}{Phi})time.phasefloatDnuPermanent spin-frequency increment {Delta}{nu}Hzem.freq;src.vardoublee_DnuError on DnuHzstat.errordoublel_DnudotLimit flag on Dnudotmeta.code.errorcharDnudotPermanent spin-frequency derivative increments**-2em.freq;src.vardoubleNamePulsar name (J1706-4434)meta.id;meta.maincharJ/MNRAS/493/1063/table10Parameters of four newly discovered pulsars which display either nulling or intermittent behaviourrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNamePulsar name (JHHMM-DDMM)meta.id;meta.maincharOspanObserving spandtime.intervalcharNobsNumber of observationsmeta.numberintIntTimeTotal integration timehtime.epochfloatNFNulling fraction%meta.numberinte_NFError on NF%stat.errorintJ/MNRAS/493/1063/tablea1755 redetections of 390 pulsars recorded during processing of the 44 per cent of the HTRU-S LowLat survey as reported in this paperSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMoreLink to Table A3meta.ref.urlcharNamePulsar name (BHHMM+DD or JHHMM+DDMM)meta.id;meta.maincharprimaryDateDate of the redetectiontime.epochnullableTimeUTC time of the redetectiontime.epochnullableBeamBeam numbermeta.numberintGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latfloatthetaOffset between the pulsar position and the centre of the telescope beamdegpos.angDistance;instr.beamfloatPobsObserved spin periodmstime.perioddoublef_PobsFlag on Pobs (1)meta.codecharDMObserved dispersion measurepc.cm**-3phys.dispMeasure;instr.dispersionfloatSexpExpected apparent flux density at 1.4GHz of the pulsar (2)mJyphot.flux.density;em.radio.750-1500MHzfloatS/NexpExpected signal to noise ratio (3)stat.snrfloatS/NobsObserved signal to noise ratiostat.snrfloat_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.mainnullable_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainnullableJ/MNRAS/493/1063/tablea2Pulsars with S/N_exp_>S/N_min_=9 which were not detected in the ~44 per cent of the HTRU-S LowLat survey processed by the partially coherent segmented acceleration search pipeline for this paperBeamBeam numbermeta.numberintSimbadSimbad column added by the CDSmeta.ref.urlcharf_S/Nexp[a] Flag on S/Nexp (2)meta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateObservation Datetime.epoch;obsnullableTimeUTC observation timetime.epochnullablethetaOffset between the pulsar position and the centre of the telescope beamdegpos.angDistance;instr.beamfloatPcatPSRCAT spin periodmstime.perioddoubleDMcatPSRCAT dispersion measurepc.cm**-3phys.dispMeasure;instr.dispersionfloatS/NexpExpected signal to noise ratio (1)stat.snrfloatS/Neph? Signal to noise ratio resulting from a fold of beam using the PSRCAT ephemeris of the pulsarstat.snrfloatnullableComCommentsmeta.notechar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainNamePulsar name (JHHMM-DDMM)meta.id;meta.maincharJ/MNRAS/493/1063/tablea3Redetections of binary pulsars from ~44 per cent of the HTRU-S LowLat surveyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNamePulsar name (BHHMM+DD or JHHMM+DDMM)meta.id;meta.maincharPbOrbital periodhtime.periodfloateEccentricitysrc.orbital.eccentricitydoubleamaxMaximum acceleration valuem.s**-2phys.accelerationfloataminMinimum acceleration valuem.s**-2phys.accelerationdoubleDateDate of the redetectiontime.epochnullableTimeUTC time of the redetectiontime.epochnullableBeamBeam numbermeta.numberintPobsObserved spin periodmstime.perioddoubleDMObserved dispersion measurepc.cm**-3phys.dispMeasure;instr.dispersionfloatS/Nf? Highest S/N in the full-length segmentstat.snrfloatnullablef_S/NfFlag on S/Nfmeta.codecharaf? Acceleration corresponding to S/Nfm.s**-2phys.accelerationfloatnullableS/Nh? Highest S/N in the half-length segmentstat.snrfloatnullableah? Acceleration corresponding to S/Nhm.s**-2phys.accelerationfloatnullableS/Nq? Highest S/N in the quarter-length segmentstat.snrfloatnullableaq? Acceleration corresponding to S/Nqm.s**-2phys.accelerationfloatnullableS/Ne? Highest S/N in the eighth-length segmentstat.snrfloatnullableae? Acceleration corresponding to S/Nem.s**-2phys.accelerationfloatnullable