J/AJ/162/254ivo://CDS.VizieR/J/AJ/162/254doi:10.26093/cds/vizier.51620254CDSMarshall H.L.Chen Y.Drake J.J.Guainazzi M.Kashyap V.L.Meng X.-L.,Plucinsky P.P.Ratzlaff P.Van Dyk D.A.Wang X.2022-05-18T14:23:41Z2022-03-07T07:45:16ZCDS support team

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

cds-question@unistra.frx-ray-sourcesWe describe a process for cross-calibrating the effective areas of X-ray telescopes that observe common targets. The targets are not assumed to be "standard candles" in the classic sense, in that we assume that the source fluxes have well-defined, but a priori unknown values. Using a technique developed by Chen et al. that involves a statistical method called shrinkage estimation, we determine effective area correction factors for each instrument that bring estimated fluxes into the best agreement, consistent with prior knowledge of their effective areas. We expand the technique to allow unique priors on systematic uncertainties in effective areas for each X-ray astronomy instrument and to allow correlations between effective areas in different energy bands. We demonstrate the method with several data sets from various X-ray telescopes.2021AJ....162..254Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/162/254CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIX/50 : XMM-Newton Serendipitous Source Catalogue 3XMM-DR6 (XMM-SSC, 2016)IV/34 : K2 Ecliptic Plane Input Catalog (EPIC) (Huber+, 2017)J/A+A/575/A30 : HIFLUGCS XMM/Chandra cross-calibration (Schellenberger+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/162/254https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/162/254http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/162/254https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/162/254https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/162/254http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/162/254GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/162/254/tablea1 (Concordance fluxes)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/162/254/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/162/254/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/162/254/tablea1?GETtext/xml+votable180.050000true6/1168 1263 2340 2709 7241 7606 8067 8324 8952 9612 10401 10605 11127 11829 11936 12241 16447 20624 22890 23134 23323 24831 25132 25610 26292 26393 27343 27423 27742 28356 28495 28517 31663 33004 33088 33193 34065 35611 35623 36417 37475 38359 43634 44059 44356 44894 46987 47014https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/162/254?format=asciiX-raydefaultJ/AJ/162/254/tablea1Concordance fluxesSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTargetTarget identifiermeta.id;meta.maincharSampleSample (1)src.samplecharBandBand; hard, medium or softinstr.bandpasscharFluxN[0.0007/0.14] Flux normalizationph.cm**-2.s**-1phot.flux;arith.ratiodoubleFlux1[0.0008/1] pn Fluxphot.fluxfloate_Flux1[0/0.9] Uncertainty in Flux1stat.errorfloatFlux2[0.0008/1] MOS1 Fluxphot.fluxfloate_Flux2[0/0.8] Uncertainty in Flux2stat.errorfloatFlux3[0.0008/1] MOS2 Fluxphot.fluxfloate_Flux3[0/0.9] Uncertainy in Flux3stat.errorfloat_RAPosition from SIMBAD (right ascension part)degpos.eq.ra;meta.mainnullable_DEPosition from SIMBAD (declination part)degpos.eq.dec;meta.mainnullableJ/AJ/162/254/tablea2Capella grating observations with ChandrarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEpoch[1/21] Epoch Grouptime.epoch;pos.lgintObsEpoch, Monthtime.epochnullableObsID[57/62435] Chandra Observation IDmeta.id;obsintExp[9.42/59.2] Exposure timekstime.duration;obs.exposurefloatDetectorDetector; ACIS-S or HRC-Smeta.id;meta.maincharGratingGrating Armmeta.id;instrcharNeXlb12[16.5/43]? Line Flux, Ne X 12.13A, 10-13erg/s/cm21e-16W.m**-2phot.fluxfloatnullablee_NeXlb12[0.6/5]? Uncertainty in NeXlb121e-16W.m**-2stat.errorfloatnullableFeXVIIlb15[39.3/90.1]? Line Flux, Fe XVII 15.02A, 10-13erg/s/cm21e-16W.m**-2phot.fluxfloatnullablee_FeXVIIlb15[0.8/14]? Uncertainty in FeXVIIlb151e-16W.m**-2stat.errorfloatnullableFeXVIIlb17[38.7/116]? Line Flux,Fe XVII 17.05A, 10-13erg/s/cm21e-16W.m**-2phot.fluxfloatnullablee_FeXVIIlb17[0.9/24]? Uncertainty in FeXVIIlb171e-16W.m**-2stat.errorfloatnullableOVIIIlb19[19.7/56.5]? Line Flux, O VIII 18.96A, 10-13erg/s/cm21e-16W.m**-2phot.fluxfloatnullablee_OVIIIlb19[0.7/18]? Uncertainty in OVIIIlb191e-16W.m**-2stat.errorfloatnullable