Chandra observations of SDSS J1004+4112: constraints on the lensing cluster and anomalous X‐ray flux ratios of the quadruply imaged quasar

Naomi Ota; Naohisa Inada; Masamune Oguri; Kazuhisa Mitsuda; Gordon T. Richards; Yasushi Suto; W. N. Brandt; Francisco J. Castander; Ryuichi Fujimoto; Patrick B. Hall; Charles R. Keeton; Robert C. Nichol; Donald P. Schneider; Daniel E. Eisenstein; Joshua A. Frieman; Edwin L. Turner; Takeo Minezaki; Yuzuru Yoshii

doi:10.1086/505385

Chandra observations of SDSS J1004+4112: constraints on the lensing cluster and anomalous X‐ray flux ratios of the quadruply imaged quasar

Naomi Ota, Naohisa Inada, Masamune Oguri, Kazuhisa Mitsuda, Gordon T. Richards, Yasushi Suto, W. N. Brandt, Francisco J. Castander, Ryuichi Fujimoto, Patrick B. Hall, Charles R. Keeton, Robert C. Nichol, Donald P. Schneider, Daniel E. Eisenstein, Joshua A. Frieman, Edwin L. Turner, Takeo Minezaki, Yuzuru Yoshii

Institute of Cosmology & Gravitation

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Abstract

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 × 10⁴⁴ 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 Kα emission line, both of which are indicative of microlensing.

Original language	English
Pages (from-to)	215-221
Journal	The Astrophysical Journal
Volume	647
Issue number	1
DOIs	https://doi.org/10.1086/505385
Publication status	Published - 10 Aug 2006

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10.1086/505385

0004-637X_647_1_215
copyright 2006. The American Astronomical Society.
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http://stacks.iop.org/0004-637X/647/i=1/a=215

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Ota, N., Inada, N., Oguri, M., Mitsuda, K., Richards, G. T., Suto, Y., Brandt, W. N., Castander, F. J., Fujimoto, R., Hall, P. B., Keeton, C. R., Nichol, R. C., Schneider, D. P., Eisenstein, D. E., Frieman, J. A., Turner, E. L., Minezaki, T., & Yoshii, Y. (2006). Chandra observations of SDSS J1004+4112: constraints on the lensing cluster and anomalous X‐ray flux ratios of the quadruply imaged quasar . The Astrophysical Journal, 647(1), 215-221. https://doi.org/10.1086/505385

@article{d068e3d69816499e9f5cc6a6d9af9560,

title = "Chandra observations of SDSS J1004+4112: constraints on the lensing cluster and anomalous X‐ray flux ratios of the quadruply imaged quasar ",

abstract = "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 × 1044 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 Kα emission line, both of which are indicative of microlensing.",

author = "Naomi Ota and Naohisa Inada and Masamune Oguri and Kazuhisa Mitsuda and Richards, {Gordon T.} and Yasushi Suto and Brandt, {W. N.} and Castander, {Francisco J.} and Ryuichi Fujimoto and Hall, {Patrick B.} and Keeton, {Charles R.} and Nichol, {Robert C.} and Schneider, {Donald P.} and Eisenstein, {Daniel E.} and Frieman, {Joshua A.} and Turner, {Edwin L.} and Takeo Minezaki and Yuzuru Yoshii",

year = "2006",

month = aug,

day = "10",

doi = "10.1086/505385",

language = "English",

volume = "647",

pages = "215--221",

journal = "The Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing",

number = "1",

}

Ota, N, Inada, N, Oguri, M, Mitsuda, K, Richards, GT, Suto, Y, Brandt, WN, Castander, FJ, Fujimoto, R, Hall, PB, Keeton, CR, Nichol, RC, Schneider, DP, Eisenstein, DE, Frieman, JA, Turner, EL, Minezaki, T & Yoshii, Y 2006, 'Chandra observations of SDSS J1004+4112: constraints on the lensing cluster and anomalous X‐ray flux ratios of the quadruply imaged quasar ', The Astrophysical Journal, vol. 647, no. 1, pp. 215-221. https://doi.org/10.1086/505385

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 - Yoshii, 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 × 1044 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 Kα 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 × 1044 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 Kα emission line, both of which are indicative of microlensing.

U2 - 10.1086/505385

DO - 10.1086/505385

M3 - Article

SN - 0004-637X

VL - 647

SP - 215

EP - 221

JO - The Astrophysical Journal

JF - The Astrophysical Journal

IS - 1

ER -

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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