Chandra Observations of SDSS J1004+4112: Constraints on the Lensing Cluster and Anomalous X-Ray Flux Ratios of the Quadruply Imaged Quasar

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dc.creatorOta, N.
dc.creatorInada, N.
dc.creatorOguri, M.
dc.creatorMitsuda, K.
dc.creatorRichards, G. T.
dc.creatorSuto, Y.
dc.creatorBrandt, W. N.
dc.creatorCastander, F. J.
dc.creatorFujimoto, R.
dc.creatorHall, P. B.
dc.creatorKeeton, C. R.
dc.creatorNichol, R. C.
dc.creatorSchneider, D. P.
dc.creatorEisenstein, D. E.
dc.creatorFrieman, J. A.
dc.creatorTurner, E. L.
dc.creatorMinezaki, T.
dc.creatorYoshii, Y.
dc.date2006-01-31
dc.date2006-04-26
dc.date.accessioned2026-07-07T10:43:35Z
dc.date.available2026-07-07T10:43:35Z
dc.descriptionWe present results from Chandra observations of SDSS J1004+4112, a strongly lensed quasar system with a maximum image separation of 15". All four bright images of the quasar, as well as resolved X-ray emission originating from the lensing cluster, are clearly detected. The emission from the lensing cluster extends out to approximately 1.5 arcmin. We measure the bolometric X-ray luminosity and temperature of the lensing cluster to be 4.7e44 erg s^-1 and 6.4 keV, consistent with the luminosity-temperature relation for distant clusters. The mass estimated from the X-ray observation shows excellent agreement with the mass derived from gravitational lensing. The X-ray flux ratios of the quasar images differ markedly from the optical flux ratios, and the combined X-ray spectrum of the images possesses an unusually strong Fe Kalpha emission line, both of which are indicative of microlensing.
dc.description9 pages, 5 figures. Accepted for publication in ApJ. Version with high-quality color figures at http://cosmic.riken.jp/ota/publications/index.html
dc.identifierhttps://arxiv.org/abs/astro-ph/0601700
dc.identifierhttp://arxiv.org/abs/astro-ph/0601700
dc.identifierAstrophys.J.647:215-221,2006
dc.identifierdoi:10.1086/505385
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/182293
dc.subjectAstrophysics
dc.titleChandra Observations of SDSS J1004+4112: Constraints on the Lensing Cluster and Anomalous X-Ray Flux Ratios of the Quadruply Imaged Quasar
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