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 Yoshi

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 Yoshi

Astrophysical Sciences

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

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 × 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.

Original language	English (US)
Pages (from-to)	215-221
Number of pages	7
Journal	Astrophysical Journal
Volume	647
Issue number	1 I
DOIs	https://doi.org/10.1086/505385
State	Published - Aug 10 2006

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Galaxies: clusters: general
Gravitational lensing
X-rays: galaxies

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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., & Yoshi, Y. (2006). Chandra observations of SDSS J1004+4112: Constraints on the lensing cluster and anomalous X-ray flux ratios of the quadruply imaged quasar. Astrophysical Journal, 647(1 I), 215-221. https://doi.org/10.1086/505385

Ota, Naomi ; Inada, Naohisa ; Oguri, Masamune ; Mitsuda, Kazuhisa ; Richards, Gordon T. ; Suto, Yasushi ; Brandt, W. N. ; Castander, Francisco J. ; Fujimoto, Ryuichi ; Hall, Patrick B. ; Keeton, Charles R. ; Nichol, Robert C. ; Schneider, Donald P. ; Eisenstein, Daniel E. ; Frieman, Joshua A. ; Turner, Edwin L. ; Minezaki, Takeo ; Yoshi, Yuzuru. / Chandra observations of SDSS J1004+4112 : Constraints on the lensing cluster and anomalous X-ray flux ratios of the quadruply imaged quasar. In: Astrophysical Journal. 2006 ; Vol. 647, No. 1 I. pp. 215-221.

@article{224ba5280cb34a3a86bbe895ea22b2cf,

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 × 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.",

keywords = "Galaxies: clusters: general, Gravitational lensing, X-rays: galaxies",

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 Yoshi",

year = "2006",

month = aug,

day = "10",

doi = "10.1086/505385",

language = "English (US)",

volume = "647",

pages = "215--221",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "1 I",

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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 & Yoshi, Y 2006, 'Chandra observations of SDSS J1004+4112: Constraints on the lensing cluster and anomalous X-ray flux ratios of the quadruply imaged quasar', Astrophysical Journal, vol. 647, no. 1 I, pp. 215-221. https://doi.org/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. / Ota, Naomi; Inada, Naohisa; Oguri, Masamune; Mitsuda, Kazuhisa; Richards, Gordon T.; Suto, Yasushi; Brandt, W. N.; Castander, Francisco J.; Fujimoto, Ryuichi; Hall, Patrick B.; Keeton, Charles R.; Nichol, Robert C.; Schneider, Donald P.; Eisenstein, Daniel E.; Frieman, Joshua A.; Turner, Edwin L.; Minezaki, Takeo; Yoshi, Yuzuru.

In: Astrophysical Journal, Vol. 647, No. 1 I, 10.08.2006, p. 215-221.

Research output: Contribution to journal › Article › peer-review

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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