J/ApJ/740/L34ivo://CDS.VizieR/J/ApJ/740/L34doi:10.26093/cds/vizier.17409034CDSChen B.Dai X.Kochanek C.S.Chartas G.Blackburne J.A.Kozlowski S.2013-04-16T13:26:24Z2013-03-27T15:44:29ZCDS support team

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

cds-question@unistra.frgravitational-lensingquasarsx-ray-sourcesWe present our long-term Chandra X-ray monitoring data for the gravitationally lensed quasar Q2237+0305 with 20 epochs spanning 10 years. We easily detect microlensing variability between the images in the full (0.2-8keV), soft (0.2-2keV), and hard (2-8keV) bands at very high confidence. We also detect, for the first time, chromatic microlensing differences between the soft and hard X-ray bands. The hard X-ray band is more strongly microlensed than the soft band, suggesting that the corona above the accretion disk thought to generate the X-rays has a non-uniform electron distribution, in which the hotter and more energetic electrons occupy more compact regions surrounding the black holes. Both the hard and soft X-ray bands are more strongly microlensed than the optical (rest-frame UV) emission, indicating that the X-ray emission is more compact than the optical, confirming the microlensing results from other lenses.2011ApJ...740L..34Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/740/L34CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/chandra : The Chandra Archive Log (CXC, 1999-2012)V/134 : Atlas of Radio/X-ray associations (ARXA) (Flesch, 2010)IX/41 : XMM-Newton Serendipitous Source Catalogue 2XMMi-DR3 (XMM-SSC, 2010)J/A+A/493/339 : XMM-Newton serendipitous Survey. V. (Watson+, 2009)J/ApJS/169/401 : ChaMP X-ray point source catalog (Kim+, 2007)J/AZh/84/885 : VRI observations of radio source S5 0716+71 (Koptelova+, 2007)J/A+A/420/447 : VRI photometry of lensed QSO B2237+0305 (Vakulik+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/740/L34https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/740/L34http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/740/L34https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/740/L34https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/740/L34http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/740/L34GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapX-raydefaultJ/ApJ/740/L34/table1Chandra count rates of Q2237+0305 corrected for absorptionJD[51794/55528] Julian Date (JD-2400000)dtime.epochintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObsID[431/13195] Chandra observation numbermeta.numberintExp[7264/30287] Exposure timestime.duration;obs.exposureintImage[A-D] Image identification (1)meta.id;obs.imagecharCRfull[2/211.9] Full 0.2-8keV band count ratect/ksphot.count;em.X-rayfloate_CRfull[0.5/14.5] Uncertainty in CRfullct/ksstat.errorfloatCRsoft[1.5/197.2] Soft 0.2-2keV band count ratect/ksphot.count;em.X-rayfloate_CRsoft[0.4/9.7] Uncertainty in CRsoftct/ksstat.errorfloatCRhard[0.3/22.7] Hard 2-8keV band count ratect/ksphot.count;em.X-rayfloate_CRhard[0.2/2.1] Uncertainty in CRhardct/ksstat.errorfloat