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- W2000777512 abstract "view Abstract Citations (41) References (12) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Continuum and C iii] Microlensing in Q2237+0305 and the Quasar Geometry Racine, Rene Abstract New photometry of Q2237+0305 in V and C III] light obtained with HRCam at the CFHT on 1991 October 10 is combined with earlier data to show that, at that epoch, component B was amplified by 0.5 mag in the continuum, with a concurrent change its (V - C III]) color, and that component A had undergone a U-shape amplification event in 1988-1989. The light curves and color change indicate that, for an assumed transverse velocity of 600 km s^-1^, the continuum region of the quasar is < 1 x 10^15^ cm in radius and that the broad-line region is probably > 10 times larger. It is noted that, in the absence of microlensing and differential extinction, all four bright images of Q2237+0305 would have the same brightness to within < 10%. The signal-to-noise ratio of the C III] image proved insufficient to detect a faint, central fifth image of the quasar which must then be > 4 mag fainter than the brighter components of the mirage. Publication: The Astrophysical Journal Pub Date: August 1992 DOI: 10.1086/186489 Bibcode: 1992ApJ...395L..65R Keywords: Gravitational Lenses; Quasars; Astronomical Photometry; Charge Coupled Devices; Galactic Structure; Light Curve; Signal To Noise Ratios; Astrophysics; COSMOLOGY: GRAVITATIONAL LENSING; GALAXIES: QUASARS: INDIVIDUAL ALPHANUMERIC: 2237; 0305 full text sources ADS | data products NED (6) SIMBAD (2)" @default.
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- W2000777512 date "1992-08-01" @default.
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- W2000777512 title "Continuum and semiforbidden C III microlensing in Q2237 + 0305 and the quasar geometry" @default.
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