J/MNRAS/527/5183ivo://CDS.VizieR/J/MNRAS/527/5183doi:10.26093/cds/vizier/bg-gf-51zCDSHe Q.Y.Shi X.2026-08-03T07:33:07Z2023-12-07T11:39:56ZCDS support team

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

cds-question@unistra.frinterstellar-mediumpulsarsgalaxy-planesmilky-way-galaxyInterstellar radio-wave scattering leads to flux density fluctuations and pulse broadening of pulsar signals. However, Galactic distribution and the structure of the scattering medium are still poorly understood. Pulsar pulse broadening data available for a relatively large number of pulsars is well-suited for such investigations. We collected an up-to-date sample of publicly-available pulsar scattering data and introduced a new quantity - the reduced scattering strength to study the Galactic distribution of pulsar scattering in the Milky Way. We show that the current observations are dominated by two distinct pulsar populations: a local and an inner-Galactic one separated by {tilde}{tau}=10^-5.1^s.cm^6^/pc. The stronger electron density fluctuations associated with the inner-Galactic population naturally explain the observed steepening of pulsar scattering time - dispersion measure (DM) relation. We measure an inner disk region with 3kpc<r<5.5kpc from the Galactic center to have a scattering scale height of about 0.28kpc, supporting a correlation between interstellar radio scattering and structures associating with the ionized gas and stellar activities.2024MNRAS.527.5183Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/527/5183CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-tohttp://www.atnf.csiro.au/research/pulsar/psrcat : PSR cat Home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/527/5183https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/527/5183http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/527/5183https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/527/5183https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/527/5183http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/527/5183GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/527/5183/tableb1 (Pulsar scattering data and their sources (corrected version, 27-Feb-2025))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/527/5183/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/527/5183/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/527/5183/tableb1?GETtext/xml+votable180.050000true3.573547.776120.0055555555555555565/7564 7648 7654 6/426 1470 1676 1760 1788 1949 2573 2787 2874 2943 3018 3062 3155 3157 3162 3367 3552 3598 3614 3616 3621 3731 3872 4163 4227 4352 4831 5955 6051 6262 8068 8277 8458 9040 9240 9283 9436 11371 12500 12526 12939 12958 12974-12975 12987 12990 13018 13053 13065 13152 13191 13218 13287 13405 13719 13921 14122 14301 14306 14309 14321 14337 14342 14344 14346 14355 14359 14364 14402 14408 14412 14415 14429 14431 14454 14549 14600 14603 14605 14619 14621 14630 14645 14649 14842 14924 15304 15365 15377 15499 15621 15646 15653 15679 15751 16996 17247 17955 18153 18947 19535 19994 20078 20166 20574 21171 21455 21957 22058 22154 22271 22594 22996 23646 23727 23830 23994 24040 24183 24185-24186 24541 26555 27543 27554 28135 28226 28716 28730 28795 28807-28808 28813 28818 28822 28825-28826 28832-28833 28869 28872 28874 28900-28901 28913 28919 28921 28945 29034 29059 29082 29090 29097 29101 29103 29106 29108 29112 29115 29145-29146 29162 29213 29387 29461 29483 29487 29495 29504-29505 29511 29516 29521-29525 29528 29530 29532 29534 29550 29617 29653 29680 29727 29789 29833 29883 29929 30211 30215 30219 30222-30223 30240 30245-30246 30252 30264 30268-30269 30271 30273 30286 30306 30309 30312 30315 30319 30328 30330 30332-30333 30348 30404 30416-30417 30419 30423-30425 30428-30430 30501 30598 30600-30601 30603-30604 30606-30607 30610 30622-30623 30630 30638 30641 30644-30646 30657 30683 30689-30691 30693-30694 30696 30702 30708 30711-30713 30715 30941 31101 31228 31244 31311 31623 31751 31809 31829 31898 31933 32007 32048 32080 32085-32087 32548 32704 32888 33030 33094 33730 34034 35691 37244 37341 37361 37375 37435 37704 37714 37745-37746 37787 37828 37830 37848 37864 37876 37884 37900-37901 37905 37923-37924 37930 37946 37990 38020 38040 38048 38081 38113 38179 38250 38402 38568 38597 39004 39216 39235 39275 39280 39311 39342 39789 39977 39992 40366 40667 41212 41561 41625 41630 41655 41660 41672 41676-41678 41683-41684 41689 41697 41704 41710 41736 41756-41758 41781 41802 41805-41806 41811 41815 41820 42155 42171 42178 42187 42196 42208 42220 42224 42227-42228 42232-42233 42288 42306 42343 42346 42356 42371 42374 42379 42383-42384 42391 42396-42397 42401 42422 42433 42445 42450 42456-42457 42466 42471 42477 42481 42487 42503 42513 42515 42560 42577 42583 42592 42595 42612 42821 42825 42832 43110 43169 43219 44088 45285 45478 47010 47803 47998 48193 48928 49129https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/527/5183?format=asciiRadiodefaultJ/MNRAS/527/5183/tableb1Pulsar scattering data and their sources (corrected version, 27-Feb-2025)_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.raindexed_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.decindexedSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBNamePulsar BName (or JName if no BName)meta.id;meta.maincharJNamePulsar JNamemeta.idcharGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latDistDistancekpcpos.distancefloatDMDispersion measurepc.cm**-3phys.dispMeasure;instr.dispersiondoubleFreqObservation frequencyMHzem.freq;obsfloattauScattering timestime.scaledoubleRef[1/54] Original reference of this data (in refs.dat file)meta.ref;pos.frameintParallax[yes/no] Indicates whether we correct the pulsar position according to the pulsar parallax (1)meta.notecharJ/MNRAS/527/5183/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference numbermeta.id;meta.mainintprimaryBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentsmeta.notechar