J/MNRAS/449/1570ivo://CDS.VizieR/J/MNRAS/449/1570doi:10.26093/cds/vizier.74491570CDSLewandowski W.Kowalinska M.Kijak J.2024-08-14T20:20:48Z2016-01-06T15:19:36ZCDS support team

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

cds-question@unistra.frpulsarsWe present our results of pulse broadening time estimates and the study of the frequency scaling of this quantity for 60 pulsars based on actual multifrequency scattering estimates. This research was based on our own measurements, performed on the observational data and the profiles from various pulsar profile data bases, as well as the scatter time measurements that were found in the literature. We were able to construct a data base of over 60 pulsars with true multifrequency {alpha} measurements, which allowed us to revise the previously proposed relations between the scatter time spectral slope and the dispersion measure (DM). We found that the deviations from theoretical predictions of the value of {alpha} appear for pulsars regardless of their DM, however, the DM-averaged value of the scaling index is almost constant except for pulsars with very high DMs. Based on the obtained slopes we were also able to estimate the amount of scattering at the standard frequency of 1GHz. We found that while the estimated standardized pulse broadening time increases with DM the relation seems to be much flatter than it was previously proposed, which suggests higher values of the scatter time for mid-DM pulsars, and lower values of expected pulse broadening for highly dispersed sources.2015MNRAS.449.1570Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/449/1570CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/449/1570https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/449/1570http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/449/1570https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/449/1570https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/449/1570http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/449/1570GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/449/1570/list (List of studied pulsars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/449/1570/list?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/449/1570/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/449/1570/list?GETtext/xml+votable180.050000true19.411083359.2440.0055555555555555566/1676 1788 2943 3155 3162 3367 3616 3872 4163 4831 8068 11371 12500 12964 13218 13287 13405 13759 14122 14301 14337 14344 14346 14429 14549 14621 14842 15377 21171 21455 22058 22996 23646 23994 24040 24185 24360 24500 28818 28826 28872 28913 29082 29487 29653 29680 29727 29929 30215 30252 30257-30258 30269 30319 30328 30332 30417 30619 30641 30645 30683 30690-30691 30708 30711 30941 31751 32087 37244 37341 37787 37905 38048 38250 39004 39216 39235 39280 39789 41630 41672 41689 41697 41710 42228 42356 42397 42450 42503 42577 45478https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/449/1570?format=asciiRadiodefaultJ/MNRAS/449/1570/listList of studied pulsarsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Simbad right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Simbad declination (J2000)pos.eq.dec;meta.mainPSRPulsar namemeta.id;meta.maincharSNameSimbad namemeta.idcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/449/1570/tablea1Multi frequency scatter time measurements databasePSRPulsar namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFreqobserving frequency (MHZ)MHzem.freqfloattaudScatter time (tau_d_) in millisecondsmstime.epochdoublee_taud? Scatter time uncertainty (1)msstat.errordoublenullableRef[1/16] Reference (2)meta.ref;pos.frameint