The Optical, Ultraviolet, and X-ray Structure of the Quasar HE 0435-1223

Abstract

Microlensing has proven 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 0435-1223 in the R band and in the ultraviolet, and consider them together with X-ray light curves in two energy bands that are presented in a companion paper. Using a Bayesian Monte Carlo method, we constrain the size of the accretion disk in the rest-frame near- and far-UV, and constrain for the first time the size of the X-ray emission regions in two X-ray energy bands. The R-band scale size of the accretion disk is about 10^15.23 cm (~23 r_g), slightly smaller than previous estimates, but larger than would be predicted from the quasar flux. In the UV, the source size is weakly constrained, with a strong prior dependence. The UV to R-band size ratio is consistent with the thin disk model prediction, with large error bars. In soft and hard X-rays, the source size is smaller than ~10^14.8 cm (~10 r_g) at 95% confidence. We do not find evidence of structure in the X-ray emission region, as the most likely value for the ratio of the hard X-ray size to the soft X-ray size is unity. Finally, we find that the most likely value for the mean mass of stars in the lens galaxy is ~0.3 M_sun, consistent with other studies.

13 pages, 7 figures. Replaced with version accepted to ApJ

References in corpus (17)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Data Processing, Sky Maps, and Basic Results
• Modeling the Time Variability of SDSS Stripe 82 Quasars as a Damped Random Walk
• Sizes and Temperature Profiles of Quasar Accretion Disks from Chromatic Microlensing
• Quasar Accretion Disks Are Strongly Inhomogeneous
• The Spatial Structure of An Accretion Disk
• The Microlensing Properties of a Sample of 87 Lensed Quasars
• Microlensing variability in the gravitationally lensed quasar QSO 2237+0305 = the Einstein Cross. II. Energy profile of the accretion disk
• X-Ray and Optical Microlensing in the Lensed Quasar PG 1115+080
• The multiple quasar Q2237+0305 under a microlensing caustic
• A microlensing study of the accretion disc in the quasar MG 0414+0534
• X-Ray And Optical Flux Ratio Anomalies In Quadruply Lensed Quasars. II. Mapping the Dark Matter Content in Elliptical Galaxies
• X-ray Monitoring of Gravitational Lenses With Chandra
• A Study of Gravitational Lens Chromaticity using Ground-based Narrow Band Photometry
• Discovery of Energy Dependent X-ray Microlensing in Q2237+0305
• Microlensing of an extended source by a power-law mass distribution
• Microlensing of the X-ray, UV and optical emission regions of quasars: Simulations of the time-scales and amplitude variations of microlensing events
• Effects of Kerr Strong Gravity on Quasar X-ray Microlensing

Cited by in corpus (43)

• H0LiCOW V. New COSMOGRAIL time delays of HE0435-1223: $H_0$ to 3.8% precision from strong lensing in a flat $\Lambda$CDM model
• Space Telescope and Optical Reverberation Mapping Project. II. Swift and HST Reverberation Mapping of the Accretion Disk of NGC 5548
• Extreme AGN variability: evidence of magnetically elevated accretion?
• Space Telescope and Optical Reverberation Mapping Project VI: reverberating Disk Models for NGC 5548
• Probing dark matter substructure in the gravitational lens HE0435-1223 with the WFC3 grism
• A Robust Determination of the size of quasar accretion disks using gravitational microlensing
• Gravitational Lensing Size Scales for Quasars
• Revealing the Structure of an Accretion Disk Through Energy Dependent X-ray Microlensing
• New Constraints on the Black Hole Low/Hard State Inner Accretion Flow with NuSTAR
• Data Mining for Gravitationally Lensed Quasars
• A Consistent Picture Emerges: A Compact X-ray Continuum Emission Region in the Gravitationally Lensed Quasar SDSS J0924+0219
• Double dark matter vision: twice the number of compact-source lenses with narrow-line lensing and the WFC3 grism
• Measuring the Innermost Stable Circular Orbits of Supermassive Black Holes
• The Structure of HE 1104-1805 from Infrared to X-Ray
• $H_0$ from ten well-measured time delay lenses
• The Unchanging Circumgalactic Medium Over the Past 11 Billion Years
• Probing the Broad Line Region and the Accretion Disk in the Lensed Quasars HE0435-1223, WFI2033-4723, and HE2149-2745 using Gravitational Microlensing
• Bayesian Analysis of Quasar Lightcurves with a Running Optimal Average: New Time Delay Measurements of COSMOGRAIL Gravitationally Lensed Quasars
• Probing Planets in Extragalactic Galaxies Using Quasar Microlensing
• Structure of the Accretion Disk in the Lensed Quasar Q2237+0305 from Multi-Epoch and Multi-Wavelength Narrow Band Photometry
• HST imaging of four gravitationally lensed quasars
• Reconciling the Quasar Microlensing Disc Size Problem with a Wind Model of Active Galactic Nucleus
• A Microlensing Accretion Disk Size Measurement in the Lensed Quasar WFI 2026-4536
• Size of the accretion disk in the gravitationally lensed quasar SDSS J1004+4112 from the statistics of microlensing magnifications
• Confirmation of Planet-Mass Objects in Extragalactic Systems
• Gravitational lens system SDSS J1339+1310: microlensing factory and time delay
• Extended X-ray Monitoring of Gravitational Lenses with Chandra and Joint Constraints on X-ray Emission Regions
• Algorithms And Programs For Strong Gravitational Lensing In Kerr Space-time Including Polarization
• Estimate of the Accretion Disk Size in the Gravitationally Lensed Quasar HE 0435-1223 using Microlensing Magnification Statistics
• Revealing the structure of the lensed quasar Q 0957+561: I. Accretion disk size
• Centrally Concentrated X-ray Radiation from an Extended Accreting Corona in Active Galactic Nuclei
• Constraining the geometry and kinematics of the quasar broad emission line region using gravitational microlensing. II. Comparing models with observations in the lensed quasar HE0435-1223
• Broadband X-ray/UV/optical time-resolved spectroscopy of NGC 5548: The origin of the UV/optical variability in active galactic nuclei
• Discovery of the optically bright, wide separation double quasar SDSS J1442+4055
• X-ray illuminated accretion discs and quasar microlensing disc sizes
• Peculiar Transverse Velocities of Galaxies from Quasar Microlensing. Tentative Estimate of the Peculiar Velocity Dispersion at $z\sim 0.5$
• Dust, Gas, and Metallicities of Cosmologically Distant Lens Galaxies
• Testing the Completeness of the SDSS Colour Selection for Ultramassive, Slowly Spinning Black Holes
• Constraining Quasar Relativistic Reflection Regions and Spins with Microlensing
• X-ray monitoring of gravitationally lensed radio-loud quasars with Chandra
• Strong lensing of tidal disruption events: Detection rates in imaging surveys
• A Second-Order Moment of Microlensing Variability as a Novel Tool in Extragalactic Research
• Thermomagnetic Ettingshausen-Nernst effect in tachocline, magnetic reconnection phenomenon in lower layers, axion mechanism of solar luminosity variations, coronal heating problem solution and mechanism of ADM variations around BH