Microlensing in the Q0957 + 561 gravitational mirage

Details Microlensing in the Q0957 + 561 gravitational mirage Microlensing in the Q0957 + 561 gravitational mirage

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aj....101..813s&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 101, March 1991, p. 813-817.

Astronomy and Astrophysics

Astronomy

44

Emission Spectra, Gravitational Lenses, Interstellar Matter, Quasars, Spectrum Analysis, Accretion Disks, Gravitational Effects, Mass Spectra, Molecular Clouds

Scientific paper

Analysis of the 10 yr record from monitoring the continuum brightness of Q0957 + 561 A, B shows a systematic increase of the B relative to the A component. The B brightness has leveled off in the last 2 yr at a value 32 percent higher than would be predicted from the ratio of Mg II 2798 A emission line strengths. This is taken to be the signature of microlensing by a star or stars in the lens galaxy.

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