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- W3100206836 endingPage "24" @default.
- W3100206836 startingPage "24" @default.
- W3100206836 abstract "We present Chandra monitoring data for six gravitationally lensed quasars: QJ 0158−4325, HE 0435−1223, SDSS 0924+0219, SDSS 1004+4112, HE 1104−1805, and Q 2237+0305. X-ray microlensing variability is detected in all six lenses with high confidence. We furthermore detect energy-dependent microlensing in HE 0435−1223, SDSS 0924+0219, SDSS 1004+4112, and Q 2237+0305. Through a detailed spectral analysis for each lens we find that simple power-law models plus Gaussian emission lines give good fits to the spectra. We detect intrinsic spectral variability in two epochs of Q 2237+0305, and differential absorption between images in QJ 0158−4325 and Q2237+0305. We also detect the Fe Kα emission line in all six lenses, and the Ni xxvii Kα line in two images of Q 2237+0305. The rest-frame equivalent widths of the Fe Kα lines are measured to be 0.4–1.2 keV, significantly higher than those measured in typical active galactic nuclei of similar X-ray luminosities. This suggests that the Fe Kα emission region is more compact or centrally concentrated than the continuum emission region." @default.
- W3100206836 created "2020-11-23" @default.
- W3100206836 creator A5033162064 @default.
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- W3100206836 date "2012-07-23" @default.
- W3100206836 modified "2023-10-11" @default.
- W3100206836 title "X-RAY MONITORING OF GRAVITATIONAL LENSES WITH<i>CHANDRA</i>" @default.
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- W3100206836 doi "https://doi.org/10.1088/0004-637x/755/1/24" @default.
- W3100206836 hasPublicationYear "2012" @default.
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