Determination of the transverse velocity of Q2237+0305

Abstract

The largest systematic uncertainty present in the analysis of gravitationally microlensed quasar light curves is that of the galactic transverse velocity. We describe a method for determining the transverse velocity as well as its application to published monitoring data of Q2237+0305 (Irwin et al. 1989; Corrigan et al. 1991; Ostensen et al 1995). We find that while this data displays strong evidence for microlensing, it limits the transverse velocity to be < 500 km/sec (for microlens masses of 0.5 solar masses). In addition, by combining these results with a new method for modelling the microlensing contribution of stellar proper motions, we find that the masses of microlenses in Q2237+0305 are consistent with those of low mass stars.

4 pages, 2 figures. To appear in "Gravitational Lensing: Recent Progress and Future Goals", ASP conference series, eds Brainerd & Kochanek

Cited by in corpus (32)

• Quantitative Interpretation of Quasar Microlensing Light Curves
• Imaging a Quasar Accretion Disk with Microlensing
• Microlensing Evidence That A Type 1 Quasar Is Viewed Face On
• The Transverse Peculiar Velocity of the Q2237+0305 Lens Galaxy and the Mean Mass of Its Stars
• The nature and size of the optical continuum source in QSO 2237+0305
• Evidence for a source size of less than 2000 AU in Quasar 2237+0305
• SDSS J0903+5028: A New Gravitational Lens
• Determining the Microlens Mass Function from Quasar Microlensing Statistics
• A gravitational microlensing determination of continuum source size in Q2237+0305
• Limits on the microlens mass function of Q2237+0305
• A small source in Q2237+0305 ?
• Origin of Chromatic Features in Multiple Quasars -Variability, Dust, or Microlensing -
• Gravitational Microlensing Near Caustics II: Cusps
• Determination of the properties of the central engine in microlensed QSOs
• Statistics of Microlensing Caustic Crossings in Q~2237+0305: Peculiar Velocity of the Lens Galaxy and Accretion Disk Size
• Resolving the Innermost Region of the Accretion Disk of the Lensed Quasar Q 2237+0305 through Gravitational Microlensing
• Caustic Crossing in the Gravitational Lens Q2237+0305
• Limits on the Transverse Velocity of the Lensing Galaxy in Q2237+0305 from the Lack of Strong Microlensing Variability
• Microlensing of Broad Absorption Line Quasars: Polarization Variability
• Is there a caustic crossing in the lensed quasar Q2237+0305 observational data record?
• Gravitational microlensing of AGN dusty tori
• Interpretation of the OGLE Q2237+0305 microlensing light-curve
• Q2237+0305 source structure and dimensions from light curves simulation
• Asymptotic Expansions and Amplification of a Gravitational Lens Near a Fold Caustic
• Using galaxy redshift surveys to detect gravitationally-lensed quasars
• Liverpool-Maidanak monitoring of the Einstein Cross in 2006$-$2019. I. Light curves in the $gVrRI$ optical bands and microlensing signatures
• Peculiar Transverse Velocities of Galaxies from Quasar Microlensing. Tentative Estimate of the Peculiar Velocity Dispersion at $z\sim 0.5$
• Searching for MACHOs in Galaxy Clusters
• Predicting caustic crossing high magnification events in Q2237+0305
• The rate of caustic crossing microlensing events for Q2237+0305
• Measuring transverse velocities in gravitationally lensed extragalactic systems using an annual parallax effect
• Free-floating "planets'' in the macrolensed quasar Q2237+0305