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1996•Symposium - International Astronomical UnionOpen access

Microlensing in the lensed quasar UM 425?

F. Courbin, K. C. Sahu, G. Meylan

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Abstract

During the ESO key-program on gravitational lenses, the light curves of two images (A and B) of the lensed quasar UM 425 were obtained (from 1987 to 1995). This poster presents a possible interpretation of the light curves in terms of a micro-lensing event in the faint B component of the system, without ruling out a possible intrinsic variation of the source.

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What this paper is about

During the ESO key-program on gravitational lenses, the light curves of two images (A and B) of the lensed quasar UM 425 were obtained (from 1987 to 1995). This poster presents a possible interpretation of the light curves in terms of a micro-lensing event in the faint B component of the system, without ruling out a possible intrinsic variation of the source.

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Available abstract

During the ESO key-program on gravitational lenses, the light curves of two images (A and B) of the lensed quasar UM 425 were obtained (from 1987 to 1995). This poster presents a possible interpretation of the light curves in terms of a micro-lensing event in the faint B component of the system, without ruling out a possible intrinsic variation of the source.

Key concepts: Gravitational microlensing, Quasar, Physics, Gravitational lens, Astrophysics, Light curve, Interpretation (philosophy), Strong gravitational lensing

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