J/A+A/675/A196ivo://CDS.VizieR/J/A+A/675/A196doi:10.26093/cds/vizier.36750196CDSMaruca B.A.Qudsi R.A.Alterman B.L.Walsh B.M.Korreck K.E.,Verscharen D.Bandyopadhyay R.Chhiber R.Chasapis A.Parashar T.N.,Matthaeus W.H.Goldstein M.L.2024-11-06T20:05:03Z2023-07-24T08:40:05ZCDS support team

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

cds-question@unistra.frsolar-systemthe-sunThough the solar wind is characterized by spatial and temporal variability across a wide range of scales, long-term averages of in situ measurements have revealed clear radial trends: changes in average values of basic plasma parameters (e.g., density, temperature, and speed) and a magnetic field with a distance from the Sun. To establish our current understanding of the solar wind's average expansion through the heliosphere, data from multiple spacecraft needed to be combined and standardized into a single dataset. In this study, data from twelve heliospheric and planetary spacecraft - Parker Solar Probe (PSP), Helios 1 and 2, Mariner 2 and 10, Ulysses, Cassini, Pioneer 10 and 11, New Horizons, and Voyager 1 and 2 - were compiled into a dataset spanning over three orders of magnitude in heliocentric distance. To avoid introducing artifacts into this composite dataset, special attention was given to the solar cycle, spacecraft heliocentric elevation, and instrument calibration. The radial trend in each parameter was found to be generally well described by a power-law fit, though up to two break points were identified in each fit. These radial trends are publicly released here to benefit research groups in the validation of global heliospheric simulations and in the development of new deep-space missions such as Interstellar Probe.2023A&A...675A.196Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/675/A196CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/675/A196https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/675/A196http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/675/A196https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/675/A196https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/675/A196http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/675/A196GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/675/A196/table1Datasets used in this studyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintInstSpacecraftmeta.id;instrcharn_Inst[a] Note on Inst (1)meta.notecharTempCov1Temporal coverageyrtime.epochintTempCov2? Temporal coverageyrtime.epochintnullablen_TempCov2[bc] Note on TempCov (1)meta.notecharRadCov1Radial coverage [au]aupos.distancefloatn_RadCov1[b] Note on RadCov1 (1)meta.notecharRadCov2Radial coverage [au]aupos.distancefloatn_RadCov2[bc] Note on RadCov2 (1)meta.notecharSourceData sourcemeta.bibcharJ/A+A/675/A196/fig1_bFigure 1: magnetic-field strength (k=B)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintrMedian distance from Sunaupos.distancedoublek1010th percentile in k/<k_{Earth}>stat.fit.paramdoublek2525th percentile in k/<k_{Earth}>stat.fit.paramdoublek5050th percentile in k/<k_{Earth}>stat.fit.paramdoublek7575th percentile in k/<k_{Earth}>stat.fit.paramdoublek9090th percentile in k/<k_{Earth}>stat.fit.paramdoubleNintNumber of intervalsmeta.numberdoubleJ/A+A/675/A196/fig2_n_pFigure 2: proton number-density (k=n_p_)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintrMedian distance from Sunaupos.distancedoublek1010th percentile in k/<k_{Earth}>stat.fit.paramdoublek2525th percentile in k/<k_{Earth}>stat.fit.paramdoublek5050th percentile in k/<k_{Earth}>stat.fit.paramdoublek7575th percentile in k/<k_{Earth}>stat.fit.paramdoublek9090th percentile in k/<k_{Earth}>stat.fit.paramdoubleNintNumber of intervalsmeta.numberdoubleJ/A+A/675/A196/fig3_v_pFigure 3: proton bulk speed (k=v_p_)NintNumber of intervalsmeta.numberdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintrMedian distance from Sunaupos.distancedoublek1010th percentile in k/<k_{Earth}>stat.fit.paramdoublek2525th percentile in k/<k_{Earth}>stat.fit.paramdoublek5050th percentile in k/<k_{Earth}>stat.fit.paramdoublek7575th percentile in k/<k_{Earth}>stat.fit.paramdoublek9090th percentile in k/<k_{Earth}>stat.fit.paramdoubleJ/A+A/675/A196/fig4_t_pFigure 4: proton scalar temperature (k=T_p_)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintrMedian distance from Sunaupos.distancedoublek1010th percentile in k/<k_{Earth}>stat.fit.paramdoublek2525th percentile in k/<k_{Earth}>stat.fit.paramdoublek5050th percentile in k/<k_{Earth}>stat.fit.paramdoublek7575th percentile in k/<k_{Earth}>stat.fit.paramdoublek9090th percentile in k/<k_{Earth}>stat.fit.paramdoubleNintNumber of intervalsmeta.numberdoubleJ/A+A/675/A196/fig5_v_aFigure 5: proton Alfven speed (k=v_A_)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintrMedian distance from Sunaupos.distancedoublek1010th percentile in k/<k_{Earth}>stat.fit.paramdoublek2525th percentile in k/<k_{Earth}>stat.fit.paramdoublek5050th percentile in k/<k_{Earth}>stat.fit.paramdoublek7575th percentile in k/<k_{Earth}>stat.fit.paramdoublek9090th percentile in k/<k_{Earth}>stat.fit.paramdoubleNintNumber of intervalsmeta.numberdoubleJ/A+A/675/A196/fig6_n_aFigure 6: proton Alfven number (k=N_A_)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintrMedian distance from Sunaupos.distancedoublek1010th percentile in k/<k_{Earth}>stat.fit.paramdoublek2525th percentile in k/<k_{Earth}>stat.fit.paramdoublek5050th percentile in k/<k_{Earth}>stat.fit.paramdoublek7575th percentile in k/<k_{Earth}>stat.fit.paramdoublek9090th percentile in k/<k_{Earth}>stat.fit.paramdoubleNintNumber of intervalsmeta.numberdoubleJ/A+A/675/A196/fig7_b_pFigure 7: proton scalar beta (k=beta_p_)k2525th percentile in k/<k_{Earth}>stat.fit.paramdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintrMedian distance from Sunaupos.distancedoublek1010th percentile in k/<k_{Earth}>stat.fit.paramdoublek5050th percentile in k/<k_{Earth}>stat.fit.paramdoublek7575th percentile in k/<k_{Earth}>stat.fit.paramdoublek9090th percentile in k/<k_{Earth}>stat.fit.paramdoubleNintNumber of intervalsmeta.numberdouble