265 datasets found

Keywords: gravitational lensing

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  • Bulge Microlensing Events

    Microlensing events have been observed regularly by surveys such as MACHO, OGLE and MOA. They offer an excellent way to probe the galactic structure, kinematics and stellar...

  • Variability of 5 gravitationally lensed QSOs

    We have searched for microlensing variability in the light curves of five gravitationally lensed quasars with well-determined time delays: SBS 1520+530, FBQ 0951+2635, RX...

  • VRI photometry of lensed quasar QSO B2237+0305

    Spatially resolved CCD photometry of the Q2237+0305 gravitationally lensed quasar in V, R and I spectral bands from observations with the Maidanak 1.5-m telescope made in...

  • Photometric standards around gravitational lenses

    We present a catalog of secondary photometric standard stars in the neighborhood of 14 gravitationally lensed quasars. These stars were verified to be non variable using...

  • R-band photometry of SBS1520+530

    We present optical R-band light curves of the gravitationally lensed quasar SBS 1520+530 derived from data obtained at the Nordic Optical Telescope, from February 1999 to May...
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