The accretion disc in the quasar SDSS J0924+0219★

@article{Floyd2009TheAD,
  title={The accretion disc in the quasar SDSS J0924+0219★},
  author={David J. E. Floyd and Nicholas F. Bate and R. L. Webster},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2009},
  volume={398},
  pages={233-239}
}
We present single-epoch multiwavelength optical-near-infrared observations of the 'anomalous' lensed quasar SDSS J0924+0219, made using the Magellan 6.5-m Baade Telescope at Las Campanas Observatory, Chile. The data clearly resolve the anomalous bright image pair in the lensed system, and exhibit a strong decrease in the anomalous flux ratio with decreasing wavelength. This is interpreted as a result of microlensing of a source of decreasing size in the core of the lensed quasar. We model the… 

Figures and Tables from this paper

THE STRUCTURE OF THE ACCRETION DISK IN THE LENSED QUASAR SBS 0909+532
We derive the size and temperature profile of the accretion disk of the lensed quasar SBS 0909+532 by measuring the wavelength dependence (chromaticity) of the microlensing magnification produced by
Microlensing Evidence That a Type 1 Quasar is Viewed Face-On
Using a microlensing analysis of 11 years of OGLE V-band photometry of the four image gravitational lens Q2237+0305, we measure the inclination i of the accretion disk to be cos i> 0.66 at 68%
Gravitational lensing: the structure of quasars and galaxies
We use gravitational lens systems in which a galaxy produces multiple images of a distant quasar to study the properties of both the unresolved structure of the lensed quasar and the mass
THE OPTICAL, ULTRAVIOLET, AND X-RAY STRUCTURE OF THE QUASAR HE 0435−1223 ∗
Microlensing has proved an effective probe of the structure of the innermost regions of quasars and an important test of accretion disk models. We present light curves of the lensed quasar HE
Sizes and Temperature Profiles of Quasar Accretion Disks from Chromatic Microlensing
Microlensing perturbations to the flux ratios of gravitationally lensed quasar images can vary with wavelength because of the chromatic dependence of the accretion disk's apparent size.
HST imaging of four gravitationally lensed quasars
We present new Hubble Space Telescope WFC3 imaging of four gravitationally lensed quasars: MG 0414+0534; RXJ 0911+0551; B 1422+231; WFI J2026-4536. In three of these systems we detect
The Average Size and Temperature Profile of Quasar Accretion Disks
We use multi-wavelength microlensing measurements of a sample of 10 image pairs from 8 lensed quasars to study the structure of their accretion disks. By using spectroscopy or narrowband photometry,
Structure of the Accretion Disk in the Lensed Quasar Q2237+0305 from Multi-epoch and Multi-wavelength Narrowband Photometry
We present estimates for the size and the logarithmic slope of the disk temperature profile of the lensed quasar Q2237+0305, independent of the component velocities. These estimates are based on six
A New Microlensing Event in the Doubly Imaged Quasar Q 0957+561
We present evidence for ultraviolet/optical microlensing in the gravitationally lensed quasar Q 0957+561. We combine new measurements from our optical monitoring campaign at the United States Naval
VLA and ALMA observations of the lensed radio-quiet quasar SDSS J0924+0219: a molecular structure in a 3 μJy radio source
We present Karl G. Jansky Very Large Array (VLA) and Atacama Large Millimetre Array (ALMA) observations of SDSS J0924+0219, a z = 1.524 radio-quiet lensed quasar with an intrinsic radio flux density
...
...

References

SHOWING 1-10 OF 45 REFERENCES
A microlensing study of the accretion disc in the quasar MG 0414+0534
Observations of gravitational microlensing in multiply imaged quasars currently provide the only direct probe of quasar emission region structure on submicroarcsecond scales. The analyses of
Microlensing of the Lensed Quasar SDSS 0924+0219*
We analyze V-, I-, and H-band HST images and two seasons of R-band monitoring data for the gravitationally lensed quasar SDSS 0924+0219. We clearly see that image D is a point-source image of the
The multiple quasar Q2237+0305 under a microlensing caustic
We use the high magnification event seen in the 1999 OGLE campaign light curve of image C of the quadruply imaged gravitational lens Q2237+0305 to study the structure of the quasar engine. We have
Microlensing variability in the gravitationally lensed quasar QSO 2237+0305 ≡ the Einstein Cross II. Energy profile of the accretion disk ,
We present the continuation of our long-term spectroscopic monitoring of the gravitationally lensed quasar QSO 2237 + 0305. We investigate the chromatic variations observed in the UV/optical
Microlensing variability in the gravitationally lensed quasar QSO $2237+0305 \equiv$ the Einstein Cross
We present the results of the first long-term (2.2 years) spectroscopic monitoring of a gravitationally lensed quasar, namely the Einstein Cross QSO 2237+0305. The goal of this paper is to present
The Spatial Structure of an Accretion Disk
Based on the microlensing variability of the two-image gravitational lens HE 1104-1805 observed between 0.4 and 8 μm, we have measured the size and wavelength-dependent structure of the quasar
The gravitational lens MG 0414+0534: A link between red galaxies and dust
We present near-IR observations of the red gravitational lens system MG 0414+0534. Our images are of sufficient quality to allow photometry of all four QSO images and the lens galaxy. The
COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses - II. SDSS J0924+0219: the redshift of the lensing galaxy, the quasar spectral variability and the Einstein rings
Aims. To provide the observational constraints required to use the gravitationally lensed quasar SDSS J0924+0219 for the determination of H 0 from the time delay method. We measure here the redshift
A gravitational microlensing determination of continuum source size in Q2237+0305
Following the detection of a gravitational microlensing high-magnification event (HME) in Q2237+0305A, attempts have been made to place limits on the dimensions of the quasar continuum source. The
Probing the Coevolution of Supermassive Black Holes and Galaxies Using Gravitationally Lensed Quasar Hosts
In the present-day universe, supermassive black hole masses (MBH) appear to be strongly correlated with their galaxy’s bulge luminosity, among other properties. In this study, we explore the
...
...