Gravitational Microlensing by the MACHOs of the LMC

Details Gravitational Microlensing by the MACHOs of the LMC Gravitational Microlensing by the MACHOs of the LMC

1993-12-24

arxiv.org/abs/astro-ph/9312059v1

Astrophys.J. 435 (1994) 66

Astronomy and Astrophysics

Astrophysics

12 pages, 6 figures (not included) by fax, ApJ submitted, DAEC-OPM-93

Scientific paper

10.1086/174794

The expected microlensing events of the LMC by the MACHOs of the LMC itself are calculated and compared with analogue events by objects in the Galactic halo. The LMC matter distribution is modelled by a spherical halo and an exponential disk while a face-on exponential disk is used for the stellar distribution of the LMC. Among the microlensing events discovered by the MACHOs and EROS projects, a fraction of $22\%$ could be caused by the lenses near the center of the LMC or $13\%$ from lenses at $5^o$ from the LMC center. Therefore, any statistical study of these microlensing events must take the LMC lenses into account.

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