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<ri:Resource created="2015-06-23T07:05:41Z" status="active" updated="2025-05-19T09:50:00Z" version="1.2" xmlns:cs="http://www.ivoa.net/xml/ConeSearch/v1.0" xmlns:ri="http://www.ivoa.net/xml/RegistryInterface/v1.0" xmlns:vr="http://www.ivoa.net/xml/VOResource/v1.0" xmlns:vs="http://www.ivoa.net/xml/VODataService/v1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.ivoa.net/xml/ConeSearch/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/ConeSearch.xsd http://www.ivoa.net/xml/VOResource/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/VOResource.xsd http://www.ivoa.net/xml/VODataService/v1.1 http://vo.ari.uni-heidelberg.de/docs/schemata/VODataService.xsd" xsi:type="vs:CatalogService"><title>Rotation measures of 2642 quasars</title><shortName>J/MNRAS/442/3329</shortName><identifier>ivo://CDS.VizieR/J/MNRAS/442/3329</identifier><altIdentifier>doi:10.26093/cds/vizier.74423329</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Xu J.</name></creator><creator><name>Han J.L.</name></creator><date role="Updated">2024-08-09T20:15:31Z</date><date role="Created">2015-06-23T07:05:41Z</date><contact><name>CDS support team</name><address>CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France</address><email>cds-question@unistra.fr</email></contact></curation><content><subject>quasars</subject><subject>redshifted</subject><subject>galaxy-rotation</subject><description>We have obtained the rotation measures (RMs) of 2642 quasars by using cross-identification of the most updated quasar catalogue and the RM catalogue. After discounting the foreground Galactic Faraday rotation of the Milky Way, we obtain the residual rotation measure (RRM) of these quasars. We have carefully discarded the effects from measurement and systematical uncertainties of RRMs as well as large RRMs from RM outliers, and we have obtained marginal evidence for the redshift evolution of the real dispersion of RRMs which steadily increases to 10rad/m^2^ about z~1 and is saturated at higher redshifts. Ionized clouds in the form of galaxy halos, galaxy clusters or cosmological filaments with different RM dispersion widths could produce the observed RRM evolutions. However, current data sets cannot constrain the contributions from galaxy halos and cosmic webs. Future measurements of RMs for a large sample of quasars with high precision are necessary to disentangle these different contributions.</description><source format="bibcode">2014MNRAS.442.3329X</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/442/3329</referenceURL><type>Catalog</type><contentLevel>Research</contentLevel><relationship><relationshipType>IsServedBy</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/TAP">TAP VizieR generic service</relatedResource></relationship><relationship><relationshipType>IsServedBy</relationshipType><relatedResource>Conesearch service</relatedResource></relationship></content><rights>https://cds.unistra.fr/vizier-org/licences_vizier.html</rights><capability><interface xsi:type="vr:WebBrowser"><accessURL use="full">https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/442/3329</accessURL><mirrorURL title="VizieR at IUCAA: Pune, 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standardID="ivo://ivoa.net/std/ConeSearch"><description>Cone search capability for table J/MNRAS/442/3329/table1 (2642 quasars with RM data available in the literature)</description><interface xsi:type="vs:ParamHTTP" role="std"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/442/3329/table1?</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/442/3329/table1?</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/442/3329/table1?</mirrorURL><queryType>GET</queryType><resultType>text/xml+votable</resultType></interface><maxSR>180.0</maxSR><maxRecords>50000</maxRecords><verbosity>true</verbosity><testQuery><ra>0.0417</ra><dec>30.9331</dec><sr>0.005555555555555556</sr></testQuery></capability><coverage><spatial>5/1131 7109 6/1 38 47 49 52 60 65 68 80 110 121 124 129 139 175 180 272 285 307 330 355 375 396 398 402 438 483 513 532 546 572 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ivo-id="ivo://ivoa.net/std/moc">https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/442/3329?format=ascii</footprint><waveband>Optical</waveband></coverage><tableset><schema><name>default</name><table><name>J/MNRAS/442/3329/table1</name><description>2642 quasars with RM data available in the literature</description><column><name>SimbadName</name><description>Simbad column added by the CDS</description><ucd>meta.id</ucd><dataType xsi:type="vs:VOTableType" arraysize="30*">char</dataType></column><column><name>recno</name><description>Record number assigned by the VizieR team. Should Not be used for identification.</description><ucd>meta.record</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>RAJ2000</name><description>Quasar Right ascension (J2000)</description><unit>deg</unit><ucd>meta.ref</ucd></column><column><name>DEJ2000</name><description>Quasar Declination (J2000)</description><unit>deg</unit><ucd>meta.ref</ucd></column><column><name>z</name><description>[0.1/5.4] Quasar Redshift</description><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>GLON</name><description>Galactic longitude</description><unit>deg</unit></column><column><name>GLAT</name><description>Galactic latitude</description><unit>deg</unit><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>RM</name><description>[-5359/4526] Observed rotation measure</description><unit>rad.m**-2</unit><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e_RM</name><description>[0.1/94] rms uncertainty on RM</description><unit>rad.m**-2</unit><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>r_RM</name><description>Reference for RM, in refs.dat file</description><dataType xsi:type="vs:VOTableType" arraysize="8*">char</dataType></column><column><name>R</name><description>Get the details from the NVSS rotation measure catalog (Taylor et al. 2007, J/ApJ/702/1230)</description><ucd>meta.ref</ucd><dataType xsi:type="vs:VOTableType" arraysize="*">char</dataType></column><column><name>HMQ</name><description>Simbad column added by the CDS</description><ucd>meta.ref</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>GRM</name><description>[-143/150] Galactic rotation measure</description><unit>rad.m**-2</unit><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e_GRM</name><description>[0.5/57] rms uncertainty on GRM</description><unit>rad.m**-2</unit><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>RRM</name><description>[-5377/4520] Extragalactic rotation measure (RRM=RM-GRM)</description><unit>rad.m**-2</unit><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e_RRM</name><description>[0.7/95] rms uncertainty on RRM</description><unit>rad.m**-2</unit><dataType xsi:type="vs:VOTableType">float</dataType></column></table><table><name>J/MNRAS/442/3329/refs</name><description>References</description><column><name>recno</name><description>Record number assigned by the VizieR team. Should Not be used for identification.</description><ucd>meta.record</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>Ref</name><description>Reference code</description><dataType xsi:type="vs:VOTableType" arraysize="7*">char</dataType></column><column><name>BibCode</name><description>BibCode</description><dataType xsi:type="vs:VOTableType" arraysize="19*">char</dataType></column><column><name>Aut</name><description>Author's name</description><dataType xsi:type="vs:VOTableType" arraysize="24*">char</dataType></column><column><name>Com</name><description>Comments</description><dataType xsi:type="vs:VOTableType" arraysize="22*">char</dataType></column><column><name>HMQ</name><description>Simbad column added by the CDS</description><ucd>meta.ref</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>R</name><description>Get the details from the NVSS rotation measure catalog (Taylor et al. 2007, J/ApJ/702/1230)</description><ucd>meta.ref</ucd><dataType xsi:type="vs:VOTableType" arraysize="*">char</dataType></column></table></schema></tableset></ri:Resource>