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Microlensing of Unresolved Stars as a Brown Dwarf Detection Method
A. Bouquet1, J. Kaplan1, A.-L. Melchior1, Y. Giraud-Héraud2, P. Baillon3

We describe a project of brown dwarf detection in the dark halo of a galaxy using the microlensing effect. We argue that monitoring pixels instead of stars could provide an enhancement in the number of detectable events. We estimate the detection efficiency with a Monte-Carlo simulation. We expect a ten-fold increase with respect to current experiments. To assess the feasibility of this method we have determined the photometric precision of a pixel by comparing several pictures of a same field in the LMC. To be published in the Proceeding of the workshop 'The dark side of the universe...', Roma, Juin 1993,
1 :  LPTHE - Laboratoire de Physique Théorique et Hautes Energies
2 :  PCC - Physique Corpusculaire et Cosmologie - Collège de France
3 :  CERN - European Organization for Nuclear Research
Physique/Astrophysique/Cosmologie et astrophysique extra-galactique

Planète et Univers/Astrophysique
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