6533b829fe1ef96bd128ad9c
RESEARCH PRODUCT
Size of the accretion disk in the gravitationally lensed quasar SDSS J1004+4112 from the statistics of microlensing magnifications
Miquel Serra-ricartMiquel Serra-ricartE. MediavillaE. MediavillaC. FianC. FianArnold HanslmeierJ. Jiménez-vicenteA. OscozJ. A. Muñozsubject
PhysicsTime delays010504 meteorology & atmospheric sciencesAstrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesAstronomy and AstrophysicsQuasarAstrophysics::Cosmology and Extragalactic AstrophysicsRadiusGravitational microlensing01 natural sciencesAstrophysics - Astrophysics of GalaxiesAmplitudeGravitational lensThin diskAccretion discSpace and Planetary ScienceAstrophysics of Galaxies (astro-ph.GA)0103 physical sciencesStatisticsAstrophysics::Earth and Planetary Astrophysics010303 astronomy & astrophysicsAstrophysics::Galaxy Astrophysics0105 earth and related environmental sciencesdescription
We present eight monitoring seasons of the four brightest images of the gravitational lens SDSS J1004+4112 observed between December 2003 and October 2010. Using measured time delays for the images A, B and C and the model predicted time delay for image D we have removed the intrinsic quasar variability, finding microlensing events of about 0.5 and 0.7 mag of amplitude in the images C and D. From the statistics of microlensing amplitudes in images A, C, and D, we have inferred the half-light radius (at {\lambda} rest = 2407 {\AA}) for the accretion disk using two different methods, $R_{1/2}=8.7^{+18.5}_{-5.5} \sqrt{M/0.3 M_\odot}$ (histograms product) and $R_{1/2} = 4.2^{+3.2}_{-2.2} \sqrt{M/0.3 M_\odot}$ light-days ($\chi^2$). The results are in agreement within uncertainties with the size predicted from the black hole mass in SDSS J1004+4112 using the thin disk theory.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-08-12 |