A Microlensing Accretion Disk Size Measurement in the Lensed Quasar WFI 2026-4536

被引：24

作者：

Cornachione, Matthew A. ^{[1
]}

Morgan, Christopher W. ^{[1
]}

Millon, Martin ^{[2
]}

Bentz, Misty C. ^{[3
]}

Courbin, Frederic ^{[2
]}

Bonvin, Vivien ^{[2
]}

Falco, Emilio E. ^{[4
]}

机构：

[1] US Naval Acad, Dept Phys, 572C Holloway Rd, Annapolis, MD 21402 USA

[2] Ecole Polytech Fed Lausanne EPFL, Observ Sauverny, Inst Phys, Lab Astrophys, CH-1290 Versoix, Switzerland

[3] Georgia State Univ, Dept Phys & Astron, Atlanta, GA 30303 USA

[4] Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA

来源：

ASTROPHYSICAL JOURNAL | 2020年 / 895卷 / 02期

基金：

欧洲研究理事会; 瑞士国家科学基金会; 美国国家科学基金会;

关键词：

ACTIVE GALACTIC NUCLEI; GRAVITATIONAL LENSES; X-RAY; TIME DELAYS; COSMOGRAIL; DECONVOLUTION; VARIABILITY; MODELS; MASSES; GALAXY;

D O I：

10.3847/1538-4357/ab557a

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We use 13 seasons of R-band photometry from the 1.2 m Leonard Euler Swiss Telescope at La Silla to examine microlensing variability in the quadruply imaged lensed quasar WFI 2026-4536. The lightcurves exhibit similar to 0.2 mag of uncorrelated variability across all epochs and a prominent single feature of similar to 0.1 mag within a single season. We analyze this variability to constrain the size of the quasar's accretion disk. Adopting a nominal inclination of 60 degrees, we find an accretion disk scale radius of (r(s)/cm)= 15.74(-0.29)(+0.34) at a rest frame wavelength of 2043 angstrom, and we estimate a black hole mass of log (M-BH/M-circle dot) 9.18(-0.34)(+0.39), based on the C IV line in VLT spectra. This size measurement is fully consistent with the quasar accretion disk size-black hole mass relation, providing another system in which the accretion disk is larger than predicted by thin-disk theory.

引用

页数：13

共 28 条

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ASTROPHYSICAL JOURNAL, 2017, 835 (02):
[22] Measuring accretion disk sizes of lensed quasars with microlensing time delay in multi-band light curves
Chan, J. H. H.
Rojas, K.
Millon, M.
Courbin, F.
Bonvin, V.
Jauffret, G.
ASTRONOMY & ASTROPHYSICS, 2021, 647
[23] Microlensing analysis of 14.5-year light curves in SDSS J1004+4112: Quasar accretion disk size and intracluster stellar mass fraction
Fores-Toribio, R.
Munoz, J. A.
Fian, C.
Jimenez-Vicente, J.
Mediavilla, E.
ASTRONOMY & ASTROPHYSICS, 2024, 691
[24] Probing the broad line region geometry and size of the gravitationally lensed quasar Q2237+0305 with microlensing time series
Savic, D. V.
Hutsemekers, D.
Sluse, D.
ASTRONOMY & ASTROPHYSICS, 2024, 687
[25] STRUCTURE OF THE ACCRETION DISK IN THE LENSED QUASAR Q2237+0305 FROM MULTI-EPOCH AND MULTI-WAVELENGTH NARROWBAND PHOTOMETRY
Munoz, J. A.
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Jimenez-Vicente, J.
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ASTROPHYSICAL JOURNAL, 2016, 817 (02):
[26] STATISTICS OF MICROLENSING CAUSTIC CROSSINGS IN Q 2237+0305: PECULIAR VELOCITY OF THE LENS GALAXY AND ACCRETION DISK SIZE
Mediavilla, E.
Jimenez-Vicente, J.
Munoz, J. A.
Mediavilla, T.
Ariza, O.
ASTROPHYSICAL JOURNAL, 2015, 798 (02):
[27] Constraints on accretion disk size in the massive type 1 quasar PG 2308+098 from optical continuum reverberation lags
Kokubo, Mitsuru
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 2018, 70 (05)
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Sluse, D.
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ASTRONOMY & ASTROPHYSICS, 2011, 528

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