J/MNRAS/450/2922ivo://CDS.VizieR/J/MNRAS/450/2922doi:10.26093/cds/vizier.74502922CDSNg C.Champion D.J.Bailes M.Barr E.D.Bates S.D.Bhat N.D.R.,Burgay M.Burke-Spolaor S.Flynn C.M.L.Jameson A.Johnston S.,Keith M.J.Kramer M.Levin L.Petroff E.Possenti A.Stappers B.W.,Van Straten W.Tiburzi C.Eatough R.P.Lyne A.G.2024-08-14T20:21:51Z2016-09-12T08:17:48ZCDS support team

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

cds-question@unistra.frsurveyspulsarsWe present initial results from the low-latitude Galactic plane region of the High Time Resolution Universe pulsar survey conducted at the Parkes 64-m radio telescope. We discuss the computational challenges arising from the processing of the terabyte-sized survey data. Two new radio interference mitigation techniques are introduced, as well as a partially coherent segmented acceleration search algorithm which aims to increase our chances of discovering highly relativistic short-orbit binary systems, covering a parameter space including potential pulsar-black hole binaries. We show that under a constant acceleration approximation, a ratio of data length over orbital period of ~0.1 results in the highest effectiveness for this search algorithm. From the 50 per cent of data processed thus far, we have redetected 435 previously known pulsars and discovered a further 60 pulsars, two of which are fast-spinning pulsars with periods less than 30ms. PSR J1101-6424 is a millisecond pulsar whose heavy white dwarf (WD) companion and short spin period of 5.1ms indicate a rare example of full-recycling via Case A Roche lobe overflow. PSR J1757-27 appears to be an isolated recycled pulsar with a relatively long spin period of 17ms. In addition, PSR J1244-6359 is a mildly recycled binary system with a heavy WD companion, PSR J1755-25 has a significant orbital eccentricity of 0.09 and PSR J1759-24 is likely to be a long-orbit eclipsing binary with orbital period of the order of tens of years. Comparison of our newly discovered pulsar sample to the known population suggests that they belong to an older population. Furthermore, we demonstrate that our current pulsar detection yield is as expected from population synthesis.2015MNRAS.450.2922Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/450/2922CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/423/1351 : Energy distribution in pulsars (Burke-Spolaor+, 2012)J/MNRAS/427/1052 : HTRU survey. Timing of 54 pulsars (Bates+, 2012)J/MNRAS/450/2922 : HTRU survey new pulsars (Ng+, 2015)http://www.atnf.csiro.au/research/pulsar/psrcat/ : ATNF Home Pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/450/2922https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/450/2922http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/450/2922https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/450/2922https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/450/2922http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/450/2922GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/450/2922/table4 (TEMPO2 best-fitting parameters of 30 newly discovered isolated pulsars from the HTRU Galactic plane survey)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/450/2922/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/450/2922/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/450/2922/table4?GETtext/xml+votable180.050000true150.58541667-59.3270.005555555555555556Cone search capability for table J/MNRAS/450/2922/table6 (Discovery parameters of 27 newly discovered pulsars from the HTRU Galactic plane survey, which have not yet enough TOAs to produce a coherent timing solution)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/450/2922/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/450/2922/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/450/2922/table6?GETtext/xml+votable180.050000true186.8-63.150.005555555555555556Cone search capability for table J/MNRAS/450/2922/tablec1 (The 435 previously known pulsars that have been re-detected in the 50 per cent processed data of the HTRU Galactic plane survey)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/450/2922/tablec1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/450/2922/tablec1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/450/2922/tablec1?GETtext/xml+votable180.050000true150.3874-55.140740.0055555555555555565/7225 7274 7294 7380 7561 7564 9481 10420 10557 10596 10624 10753 6/28715 28730 28735 28800-28801 28804 28807-28808 28812 28814-28816 28818-28819 28824 28828-28829 28831 28833-28834 28836 28848-28849 28851 28853-28854 28860 28864-28866 28869-28870 28872-28873 28876 28878 28883 28886 28888 28890 28895 28897 28905 28910 28912 28915-28916 28919-28921 29082 29089-29092 29094 29100-29101 29103 29105-29106 29112-29114 29117-29119 29162 29166 29180 29441 29447 29460-29461 29464-29465 29504-29505 29507 29509-29511 29516-29517 29525-29530 29532 29534-29535 29541 29552 29556 30210-30211 30216 30218 30227 30234 30240-30241 30252 30260 30264-30265 30352-30353 37244 37332 37341 37343 37351 37360-37361 37364-37365 37374-37375 37892 37895 37899-37901 37903 37905 37908-37910 37921-37923 37928-37929 37933 38018 38020 38040 38048 38060 41454-41455 41465 41468 41470 41593-41595 41597 41630 41645 41647 41650 41654-41657 41659-41660 41668 41670-41671 41674 41676-41678 41684-41685 41689 41695-41697 41699 41704 41706 41713 41758 41763 41765 41772-41773 41778 41781 41788-41789 41793 41796 41798-41800 41802-41804 41806 41812-41813 41815-41816 41818-41819 41821-41823 41828-41830 41833 41840 41859 42143 42147 42152 42155-42156 42162 42166-42167 42171 42173 42189 42199 42203 42206 42208-42209 42214 42216-42218 42223 42226-42227 42232-42233 42236 42301 42347 42367-42368 42371 42374 42378 42381 42391-42394 42396 42405 42416 42422 42424 42432-42433 42435 42437-42438 42443 42445 42447 42450 42455-42457 42460 42468 42471 42481 42487 42513 42516 42528 42560-42561 43020 43022 430249.276497240453405e-25 9.276497240453405e-25https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/450/2922?format=asciiRadiodefaultJ/MNRAS/450/2922/table2The S/N, flux density (S1400), derived luminosity (L1400) and pulse widths (W50, W10) of the 60 newly discovered pulsarsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintparamindicates TEMPO2 best-fitting parameters in table 4meta.ref.urlcharPSRPSR name (JHHMM+DDMM or JHHMM+DD) (G1)meta.id;meta.maincharprimaryS/NHTRUHTRU signal-to-noise ratiostat.snrfloatS/Nmedlat? Mdelat signal-to-noise ratiostat.snrfloatnullablel_S/NPMPSLimit flag on S/NPMPSmeta.code.errorcharS/NPMPS? MPS signal-to-noise ratiostat.snrfloatnullableS1400? Flux density at 1.4GHzmJyphot.flux.density;em.radio.750-1500MHzfloatnullableW50? Pulse width at 50%mssrc.var.pulsefloatnullableW10Pulse width at 10%mssrc.var.pulsefloatL1400? Derived luminosity at 1.4GHzmJy.kpc**-2phot.flux.density;em.radio.750-1500MHzfloatnullableJ/MNRAS/450/2922/table4TEMPO2 best-fitting parameters of 30 newly discovered isolated pulsars from the HTRU Galactic plane surveyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPSRPSR name (G1)meta.id;meta.maincharn_PSR[c] Note on PSR (2)meta.notecharRAJ2000Right ascension (J2000)pos.eq.ra;meta.maine_RAJ2000rms uncertainty (1sigma) on right ascensionsstat.error;pos.eq.rafloatDEJ2000Declination (J2000)pos.eq.dec;meta.maine_DEJ2000rms uncertainty (1sigma) on declinationarcsecstat.error;pos.eq.decfloatGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latfloatPSpin periodmstime.perioddoublee_Prms uncertainty (1sigma) on Pmsstat.errordoubledP/dtPediod derivativearith.rate;time.perioddoublee_dP/dtrms uncertainty (1sigma) on dP/dtstat.errorfloatDMDispersion measurepc.cm**-3phys.dispMeasure;instr.dispersionfloate_DM? rms uncertainty (1sigma) on DMpc.cm**-3stat.errorfloatnullableDistDistance (3)kpcpos.distance;pos.heliocentricfloatMJDspanMJD Data span (MJDs-MJDe) (fitting related parameter)time.intervalcharEpochReference epoch (MJD) (fitting related parameter)dtime.epochintNTOANumber of TOAs employed (fitting related parameter)meta.numberintrmsrms of the TEMPO2 fit (fitting related parameter)usstat.fit.param;meta.modelledintchi2rReduced chi2 (fitting related parameter) (4)stat.fit.chi2floatl_taucLimit flag on taucmeta.code.errorchartaucCharacteristic age (4)Myrtime.agefloatn_tauc[b] Note on tauc (6)meta.notecharl_BsurfLimit flag on Bsurfmeta.code.errorcharBsurfSurface magnetic field (4)1e+10Gphys.magFieldfloatn_Bsurf[b] Note on Bsurf (6)meta.notecharl_dE/dtLimit flag on dE/dtmeta.code.errorchardE/dtSpin-down energy (10+30erg/s) (5)1e+23Wphys.energydoublen_dE/dt[b] Note on dE/dt (6)meta.notecharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/450/2922/table6Discovery parameters of 27 newly discovered pulsars from the HTRU Galactic plane survey, which have not yet enough TOAs to produce a coherent timing solutionrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPSRPSR name (JHHMM+DD) (1)meta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.maine_RAJ2000rms uncertainty (1sigma) on right ascensionminstat.error;pos.eq.rafloatDEJ2000Declination (J2000)pos.eq.dec;meta.maine_DEJ2000rms uncertainty (1sigma) on declinationarcminstat.errorintGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latfloatPSpin periodmstime.perioddoublee_Prms uncertainty (1sigma) on Pmsstat.errordoubleDMDispersion measurepc.cm**-3phys.dispMeasure;instr.dispersioninte_DM? rms uncertainty (1sigma) on DMpc.cm**-3stat.errorintnullableDistDistance (2)kpcpos.distance;pos.heliocentricfloatSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/450/2922/tablec1The 435 previously known pulsars that have been re-detected in the 50 per cent processed data of the HTRU Galactic plane surveyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPSRThe pulsar namemeta.id;meta.maincharObsIDThe observation for which the pulsar was re-detected (stands for the date and the time in UT, YYYY-MM-DD-hh:mm:ss/NN)obs.param;obscharGLONGalactic longitude that corresponds to the central position of the receiver beam of that observationdegpos.galactic.lonGLATGalactic latitude that corresponds to the central position of the receiver beam of that observationdegpos.galactic.latOffsetThe offset between the observed and the true position of the pulsar (1)degpos.angDistancefloatPobsThe observed spin periodmstime.perioddoublen_Pobs[*+d] Note on Pobs (2)meta.notecharDMobsThe observed dispersion measure (DM)pc.cm**-3phys.dispMeasure;instr.dispersionfloatSexp? The expected flux density at 1.4GHzmJyphot.flux.density;em.radio.750-1500MHzfloatnullablen_Sexp[*] * when no flux density is published on PSRCATmeta.notecharS/Nexp? The expected S/N calculated according to the radiometer equationstat.snrfloatnullablen_S/Nexp[*] * when no flux density is published on PSRCATmeta.notecharS/NobsThe observed S/Nstat.snrfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.decnullableindexed