J/A+A/591/A134ivo://CDS.VizieR/J/A+A/591/A134doi:10.26093/cds/vizier.35910134CDSBilous A.V.Kondratiev V.Kramer M.Keane E.Hessels J.Stappers B.,Malofeev V.Sobey C.Breton R.Cooper S.Falcke H.Karastergiou A.,Michilli D.Oslowski S.Sanidas S.ter Veen S.van Leeuwen J.,Verbiest J.Weltevrede P.Zarka P.Griessmeier J.-M.Serylak M.,Bell M.Broderick J.Eisloeffel J.Markoff S.Rowlinson A.2019-12-09T08:46:41Z2016-06-30T06:44:34ZCDS support team

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

cds-question@unistra.frpulsarsinterstellar-mediumWe present first results from a LOFAR census of non-recycled pulsars. The census includes almost all such pulsars known (194 sources) at declinations Dec>8{deg} and Galactic latitudes |Gb|>3{deg}, regardless of their expected flux densities and scattering times. Each pulsar was observed for >=20minutes in the contiguous frequency range of 110-188MHz. Full-Stokes data were recorded. We present the dispersion measures, flux densities, and calibrated total intensity profiles for the 158 pulsars detected in the sample. The median uncertainty in census dispersion measures (1.5x10^-3^pc/cm^3^) is ten times smaller, on average, than in the ATNF pulsar catalogue. We combined census flux densities with those in the literature and fitted the resulting broadband spectra with single or broken power-law functions. For 48 census pulsars such fits are being published for the first time. Typically, the choice between single and broken power-laws, as well as the location of the spectral break, were highly influenced by the spectral coverage of the available flux density measurements. In particular, the inclusion of measurements below 100MHz appears essential for investigating the low-frequency turnover in the spectra for most of the census pulsars. For several pulsars, we compared the spectral indices from different works and found the typical spread of values to be within 0.5-1.5, suggesting a prevailing underestimation of spectral index errors in the literature. The census observations yielded some unexpected individual source results, as we describe in the paper. Lastly, we will provide this unique sample of wide-band, low-frequency pulse profiles via the European Pulsar Network Database.2016A&A...591A.134Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/591/A134CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-tohttp://www.atnf.csiro.au/people/pulsar/psrcat : ATNF pulsar cataloguehttp://astron.nl/psrcensus : processed data and supplementary materialshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/591/A134https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/591/A134http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/591/A134https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/591/A134https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/591/A134http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/591/A134GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/591/A134/obssum (Observation summary, DM and flux density measurements (table B1))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/591/A134/obssum?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/591/A134/obssum?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/591/A134/obssum?GETtext/xml+votable180.050000true1.5218.58305560.0055555555555555566/389 426 1079 1257 1470 1630 1676 1760 1949 2439 2573 2787 2855 2858 2874 2943 3014 3018 3150 3234 3335 3367 3552 3616 3681 3731 3784 3872 4352 4403 4556 4598 4608 4831 5955 6262 7391 7821 8068 8121 8131 8277 8539 8644 8964 9040 9240 9282-9283 9719 11371 12259 12441 12500 12526 12565 12586 12719 12747 12754 12767 12847 12870 12911-12912 12923 12939 12961 12993 13031 13040 13053 13065 13088 13152 13191 13198 13218 13287 13299 13316 13405 13460 13464 13472 13719 13759 13921 13984 14046 14122 14273 14346 14368 14379 14394 14441 14503 14549 14635 14715 14739 14806 14842 14916 14924 15009 15304 15407 15496 15499 15512 15536 15562 15646 15655 15679 15696 15751 15820 18288 18421 19421 19438 19880 20096 20166 20171 22271 22426 22442 23727 23830 24040 24185-24186 24360 24428 24541 26520 28106 28108 28135 28226 30461 30541 30545 30548 30564 30572 30579 30582 30591 30613 30626 30638 30651 30657 30669 30675 31591 31717 31829 31837 31851 31859 31864 31870 31898 31933 32007 32010 32014 32024 32029 32040 32048 32058 32077 32079 32116 32121 32127 32140 32161 32194 32218 32452 32546 32548 32558 32647 32704https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/591/A134?format=asciiRadiodefaultJ/A+A/591/A134/table3plFitted parameters for the pulsars with spectra modeled with a power-law with two breaksNNumber of data points in spectrummeta.numberintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPSRName of pulsar as in ATNF catalogue v.1.51meta.id;meta.maincharFreqRngLoLower edge of the spectral frequency spanMHzinstr.bandwidthintFreqRngHiUpper edge of the spectral frequency spanMHzinstr.bandwidthintf0Reference frequencyMHzem.freqintS0Fitted mean flux density at the reference frequencymJyphot.flux.density;em.radiofloataloFitted spectral index for f<fbr1spect.indexfloate_aloUncertainty in fitted spectral index for f<fbr1stat.errorfloatfrbr1Fitted first break frequencyMHzem.freqinte_frbr1? Lower limit of 68% uncertainty range for the first break frequencyMHzstat.errorintnullableE_frbr1? Upper limit of 68% uncertainty range for the first break frequencyMHzstat.error;stat.maxintnullableamidFitted spectral index for frbr1<f<fbr2spect.indexfloate_amidUncertainty in fitted spectral index for frbr1 <f<fbr2stat.errorfloatfrbr2Fitted second break frequencyMHzem.freqinte_frbr2Lower limit of 68% uncertainty range for the second break frequencyMHzstat.errorintE_frbr2Upper limit of 68% uncertainty range for the second break frequencyMHzstat.error;stat.maxintahiFitted spectral index for f>fbr2spect.indexfloate_ahiUncertainty in fitted spectral index for f>fbr2stat.errorfloatsigmalgSFitted extra scatter of lg(S) (sigma_unkn_lgS)stat.error;meta.modelledfloatJ/A+A/591/A134/refsReferencesComCommentsmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference numbermeta.id;meta.mainintBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharJ/A+A/591/A134/obssumObservation summary, DM and flux density measurements (table B1)SimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintmoreindicates fitted parameters in other tablesmeta.ref.urlcharPSRName of pulsar as in ATNF catalogue v.1.51meta.id;meta.maincharprimaryPerSpin period as in ATNF catalogue v.1.51dmeta.idfloatMJDObserving epochdtime.epochdoubleObs.timeLength of observing sessionmintime.intervalintS/N? Peak S/N of the average profilestat.snrintnullableDMcatDispersion measure as in ATNF catalogue v.1.51pc.cm**-3meta.iddoublee_DMcat? rms uncertainty on DMcatpc.cm**-3stat.errordoublenullableDMcen? Dispersion measure at the epoch of observationpc.cm**-3phys.dispMeasure;instr.dispersiondoublenullablee_DMcen? rms uncertainty on DMcenpc.cm**-3stat.errordoublenullabletau/PExpected NE2001 scattering time at 150MHz divided by pulsar period, {tau}_scat_/Ptime.scalefloatn_tau/P[*] Note on tau/P (1)meta.notecharModIndExpected flux modulation index due to scintillation in the ISM (2)src.var.indexfloatl_FluxUpper limit flag on Flux for non-detected pulsarsmeta.code.error;phot.fluxcharFluxMean HBA flux density in 110-188MHzmJyphot.flux.density;em.radio.100-200MHzfloate_Flux? rms uncertainty on mean HBA flux densitymJystat.error;phot.fluxfloatnullableRefLiterature flux references in refs.dat filemeta.ref;phot.flux;meta.filechar_RAPositions from Simbad and ATFN databse (right ascension part)degpos.eq.ra;meta.main_DEPositions from Simbad and ATFN databse (declination part)degpos.eq.dec;meta.mainJ/A+A/591/A134/table1plFitted parameters for the pulsars with spectra modeled with a single power-lawrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPSRName of pulsar as in ATNF catalogue v.1.51 (1)meta.id;meta.maincharFreqRngLoLower edge of the spectral frequency spanMHzinstr.bandwidthintFreqRngHiUpper edge of the spectral frequency spanMHzinstr.bandwidthintNNumber of data points in spectrummeta.numberintf0Reference frequencyMHzem.freqintS0Fitted mean flux density at the reference frequencymJyphot.flux.density;em.radiofloataFitted spectral indexspect.index;meta.modelledfloate_aUncertainty in fitted spectral indexstat.errorfloatsigmalgS? Fitted extra scatter of lg(S) (sigma_unkn_lgS)stat.error;meta.modelledfloatnullableJ/A+A/591/A134/table2plFitted parameters for the pulsars with spectra modeled with a broken power-lawrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPSRName of pulsar as in ATNF catalogue v. 1.51meta.id;meta.maincharFreqRngLoLower edge of the spectral frequency spanMHzinstr.bandwidthintFreqRngHiUpper edge of the spectral frequency spanMHzinstr.bandwidthintNNumber of data points in spectrummeta.numberintf0Reference frequencyMHzem.freqintS0Fitted mean flux density at the reference frequencymJyphot.flux.density;em.radiofloataloFitted spectral index for f<fbrspect.indexfloate_aloUncertainty in fitted spectral index for f<fbrstat.errorfloatfrbrFitted break frequencyMHzem.freqinte_frbr? Lower limit of 68% uncertainty range for break frequencyMHzstat.errorintnullableE_frbr? Upper limit of 68% uncertainty range for break frequencyMHzstat.error;stat.maxintnullableahiFitted spectral index for f>fbrspect.indexfloate_ahiUncertainty in fitted spectral index for f>fbrstat.errorfloatsigmalgS? Fitted extra scatter of lg(S) (sigma_unkn_lgS)stat.error;meta.modelledfloatnullable