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) |
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Pages (from-to) | 215-221 |
Number of pages | 7 |
Journal | Astrophysical Journal |
Volume | 647 |
Issue number | 1 I |
DOIs | |
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