TY - JOUR
T1 - Chandra observations of SDSS J1004+4112
T2 - Constraints on the lensing cluster and anomalous X-ray flux ratios of the quadruply imaged quasar
AU - Ota, Naomi
AU - Inada, Naohisa
AU - Oguri, Masamune
AU - Mitsuda, Kazuhisa
AU - Richards, Gordon T.
AU - Suto, Yasushi
AU - Brandt, W. N.
AU - Castander, Francisco J.
AU - Fujimoto, Ryuichi
AU - Hall, Patrick B.
AU - Keeton, Charles R.
AU - Nichol, Robert C.
AU - Schneider, Donald P.
AU - Eisenstein, Daniel E.
AU - Frieman, Joshua A.
AU - Turner, Edwin L.
AU - Minezaki, Takeo
AU - Yoshi, Yuzuru
PY - 2006/8/10
Y1 - 2006/8/10
N2 - We 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. We measure the bolometric X-ray luminosity and temperature of the lensing cluster to be 4.7 × 10 44 ergs 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 Ka emission line, both of which are indicative of microlensing.
AB - We 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. We measure the bolometric X-ray luminosity and temperature of the lensing cluster to be 4.7 × 10 44 ergs 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 Ka emission line, both of which are indicative of microlensing.
KW - Galaxies: clusters: general
KW - Gravitational lensing
KW - X-rays: galaxies
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U2 - 10.1086/505385
DO - 10.1086/505385
M3 - Article
AN - SCOPUS:33748441640
VL - 647
SP - 215
EP - 221
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 1 I
ER -