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Astron. Astrophys. 333, 893-896 (1998)

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Where are the binary source galactic microlensing events?

M. Dominik

Institut für Physik, Universität Dortmund, D-44221 Dortmund, Germany

Received 27 May 1997 / Accepted 1 December 1997

Abstract

Though there have been some galactic microlensing events which show a clear signature of a binary lens, no event has yet been claimed as due to lensing of a binary source. Here I argue that this may be due to the fact that most of the binary source events show light curves which can be fitted with the simpler model of a blended single source.

Key words: gravitational lensing – dark matter – Stars: low-mass, brown dwarfs – Galaxy: halo

Present address: Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA (e-mail: dominik@stsci.edu)

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© European Southern Observatory (ESO) 1998

Online publication: April 28, 1998

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